Coherent manipulation of the lithium plating pattern is at the heart of the safe operation of metallic anodes in the battery technologies. In this article,a lightweight (~0.3 mg cm^(-2)), dual-functionalized carbon sp...Coherent manipulation of the lithium plating pattern is at the heart of the safe operation of metallic anodes in the battery technologies. In this article,a lightweight (~0.3 mg cm^(-2)), dual-functionalized carbon spheres are anchored onto the Cu foil as the interfacial protective layer via the chelation process of the catechol groups in the polydopamine precursor and the copper foil. The dual-functionalized carbon spheres exhibit the intriguing complementary features:Lithiophilic nitrogen dopants favor the Li+ion absorption and mitigate the nucleation barrier, while the micro/mesopore reservoir spatially homogenizes the ion flux distribution, confining the metallic propagation without dendrite-like protrusions. The metallic anode exhibits an ultra-stable plating/stripping process for 1 400 hr with the average Coulombic efficiency of ~99%. A full-cell prototype is constructed by pairing the N-doped carbon spheres on the bare Cu (NCS-Cu) electrode with the high-mass-loading LiVPO4F (12.5 mg cm^(-2)) cathode that can deliver a high energy density of 421.2 Wh kg^(-1) with the highest power density of 2106 W kg^(-1) to promise the anode use for high-power/energy-dense metallic batteries.展开更多
Starting from the hydroxylamine (dimethyl amino ethanol, triethanolamine) and 1,3-propane sultone, a series of hydroxyl and sulfonyl dual-functionalized zwitterionic salts and corresponding acidic room temperature ion...Starting from the hydroxylamine (dimethyl amino ethanol, triethanolamine) and 1,3-propane sultone, a series of hydroxyl and sulfonyl dual-functionalized zwitterionic salts and corresponding acidic room temperature ionic liquids have been synthesized. The hydroxyl groups of the synthesized substances were confirmed by the 1H NMR measurement. These zwitterionic salts and ionic liquids may be used for synthesizing other functionalized ionic liquids or ionic liquid-polymer (polyelectrolyte).展开更多
Dual-function communication radar systems use common Radio Frequency(RF)signals are used for both communication and detection.For better compatibility with existing communication systems,we adopt Multiple-Input Multip...Dual-function communication radar systems use common Radio Frequency(RF)signals are used for both communication and detection.For better compatibility with existing communication systems,we adopt Multiple-Input Multiple-Output(MIMO)Orthogonal Frequency Division Multiplexing(OFDM)signals as integrated signals and investigate the estimation performance of MIMO-OFDM signals.First,we analyze the Cramer-Rao Lower Bound(CRLB)of parameter estimation.Then,the transmit powers over different subcarriers are optimized to achieve the best tradeoff between the transmission rate and the estimation performance.Finally,we propose a more accurate estimation method that uses Canonical Polyadic Decomposition(CPD)of the third-order tensor to obtain the parameter matrices.Due to the characteristic of the column structure of the parameter matrices,we only need to use DFT/IDFT to recover the parameters of multiple targets.The simulation results show that tensor-based estimation method can achieve a performance close to CRLB,and the estimation performance can be improved by optimizing the transmit powers.展开更多
The development of an efficient dual-function catalytic-sorption system,which seamlessly integrates reaction and separation into a single step for extractant-free systems,represents a transformative advancement in oxi...The development of an efficient dual-function catalytic-sorption system,which seamlessly integrates reaction and separation into a single step for extractant-free systems,represents a transformative advancement in oxidative desulfurization(ODS)process.In this work,we introduce a novel dualfunction amphiphilic biochar(Mo/CBC)catalyst,functionalized with MoO_(3-x)featuring abundant oxygen vacancies,for highly effective extractant-free ODS.The polarity of the biochar was precisely tailored by varying the amount of KOH,leading to the creation of amphiphilic carriers.Subsequent ball milling facilitated the successful loading of MoO_(3-x)onto the biochar surface via an impregnation-calcination route leveraging carbon reduction,resulting in the synthesis of amphiphilic Mo/CBC catalysts.The amphiphilic nature of these catalysts ensures their stable dispersion within the oil phase,while also facilitating their interaction with the oxidant H2O2 and the adsorption of sulfur-containing oxidation products.Characterization techniques,including EPR,XPS,and in situ XRD,verified the existence of abundant oxygen vacancies obtained by carbon reduction on the amphiphilic Mo/CBC catalysts,which significantly boosted their activity in an extractant-free ODs system.Remarkably,the amphiphilic Mo/CBC catalyst displayed exceptional catalytic performance,achieving a desulfurization efficiency of 99.6%in just 10 min without extraction solvent.DFT theoretical calculations further revealed that H_(2)O_(2)readily dissociates into two OH radicals on the O_(vac)-MoO_(3),overcoming a low energy barrier.This process was identified as a key contributor to the catalyst's outstanding ODS performance.Furthermore,other biochar sources,such as rice straw,bamboo,rapeseed oil cake,and walnut oil cake,were investigated to produce Mo-based amphiphilic biochar catalysts,which all showed excellent desulfurization performance.This work establishes a versatile and highly efficient dual-function catalytic-sorption system by designing amphiphilic biochar catalysts enriched with oxygen vacancies,paving the way for the development of universally applicable ODS catalysts for industrial applications.展开更多
Herein,the effect of the Ru:Ni bimetallic composition in dual-function materials(DFMs)for the integrated CO_(2)capture and methanation process(ICCU-Methanation)is systematically evaluated and combined with a thorough ...Herein,the effect of the Ru:Ni bimetallic composition in dual-function materials(DFMs)for the integrated CO_(2)capture and methanation process(ICCU-Methanation)is systematically evaluated and combined with a thorough material characterization,as well as a mechanistic(in-situ diffuse reflectance infrared fourier-transform spectroscopy(in-situ DRIFTS))and computational(computational fluid dynamics(CFD)modelling)investigation,in order to improve the performance of Ni-based DFMs.The bimetallic DFMs are comprised of a main Ni active metallic phase(20 wt%)and are modified with low Ru loadings in the 0.1-1 wt%range(to keep the material cost low),supported on Na_(2)O/Al_(2)O_(3).It is shown that the addition of even a very low Ru loading(0.1-0.2 wt%)can drastically improve the material reducibility,exposing a significantly higher amount of surface-active metallic sites,with Ru being highly dispersed over the support and the Ni phase,while also forming some small Ru particles.This manifests in a significant enhancement in the CH_(4)yield and the CH_(4)production kinetics during ICCU-Methanation(which mainly proceeds via formate intermediates),with 0.2 wt%Ru addition leading to the best results.This bimetallic DFM also shows high stability and a relatively good performance under an oxidizing CO_(2)capture atmosphere.The formation rate of CH_(4)during hydrogenation is then further validated via CFD modelling and the developed model is subsequently applied in the prediction of the effect of other parameters,including the inlet H_(2)concentration,inlet flow rate,dual-fu nction material weight,and reactor internal diameter.展开更多
Foxtail millet(Setaria italica)is an important crop and an emerging model plant.Photoperiodic flowering is a key determinant of its production and geographic expansion.In this study,we found that SiPRR37 is responsibl...Foxtail millet(Setaria italica)is an important crop and an emerging model plant.Photoperiodic flowering is a key determinant of its production and geographic expansion.In this study,we found that SiPRR37 is responsible for the major quantitative trait locus(QTL)Heading date 2(Hd2)identified in 680 foxtail millets using a genome-wide association study.Overexpression of SiPRR37 in foxtail millet significantly delayed the heading date under both natural long-day and short-day conditions.CRISPR/Cas9-induced Siprr37 mutants exhibited earlier flowering in long-day conditions but later flowering in short-day conditions.The critical day length(CDL)for the reversal of Siprr37’s function was around 14.3 h.Haplotype analysis revealed that accessions with the Tc1-Mariner transposon insertion in SiPRR37(Hap 1)flowered significantly earlier at higher latitudes,and later at lower latitudes,indicating that natural variants of SiPRR37 exert dual functions in flowering regulation according to geographic latitude.The gradual,successive decrease in the frequency of Hap 2 from low to high latitudes,with the concurrent increase of Hap 1,demonstrates that these haplotypes have undergone artificial selection.Further FST analysis demonstrated that SiPRR37 has contributed to the ecological adaption of foxtail millet.Additionally,we reveal that OsPRR37 promotes flowering in rice,while GmPRR37 may only inhibit flowering in soybean.Further diurnal expression and transgenic analyses suggest that the dual function of SiPRR37 might depend on SiHd1.Our study uncovered the distinct functional reversal of SiPRR37 and functional diversification of PRR37 homologs in SD crops.These findings not only enrich knowledge about the regulation of photoperiodic flowering,but also contribute to genetic improvement of crops’regional adaptability.展开更多
The electrochemical instability of traditional ether-based electrolytes poses a challenge for their use in high-voltage lithium metal batteries.Herein,a synergetic optimization strategy was proposed by introducing an ...The electrochemical instability of traditional ether-based electrolytes poses a challenge for their use in high-voltage lithium metal batteries.Herein,a synergetic optimization strategy was proposed by introducing an additive with a strong electron-withdrawing group and significant steric hindrance-isosorbide dinitrate(ISDN),reconstructing the solvation structure and solid electrolyte interphase(SEI),enabling highly stable and efficient lithium metal batteries.We found that ISDN can strengthen the interaction between Li^(+)and the anions of lithium salts and weaken the interaction between Li^(+)and the solvent in the solvation structure.It promotes the formation of a LiF-rich and LiN_(x)O_(y)-rich SEI layer,enhancing the uniformity and compactness of Li deposition and inhibiting solvent decomposition,which effectively expands the electrochemical window to 4.8 V.The optimized Li‖Li cells offer stable cycling over 1000 h with an overpotential of only 57.7 mV at 1 mA cm^(-2).Significantly,Li‖3.7 mA h LiFePO_(4)cells retain 108.3%of initial capacity after 546 cycles at a rate of 3 C.Under high-loading conditions(Li‖4.9 mA h LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)full cells)and a cutoff voltage of 4.5 V,the ISDN-containing electrolyte enables stable cycling for 140 cycles.This study leverages steric hindrance and electron-withdrawing effect to synergistically reconstruct the Li^(+)solvation structure and promote stable SEI formation,establishing a novel electrolyte paradigm for high-energy lithium metal batteries.展开更多
There is no study on food-derived peptide with both anticoagulant and angiotensin I-converting enzyme inhibitory (ACEI) activities yet. In this work, the anticoagulant and ACEI activities of the casein hydrolysates re...There is no study on food-derived peptide with both anticoagulant and angiotensin I-converting enzyme inhibitory (ACEI) activities yet. In this work, the anticoagulant and ACEI activities of the casein hydrolysates released by pepsin digestion were evaluated for the first time to the best of our knowledge. Results indicated that the casein hydrolysate exhibited potent anticoagulant activity by prolonging the thrombin time (TT) and the activated partial thromboplastin time (APTT). Compared with control samples, at 10 mg/mL, the TT and APTT of casein hydrolysate were 186.0 % ± 6.6 % and 163.5 % ± 7.4 %, respectively. The casein hydrolysate also showed a strong ACEI activity with an IC50 value of 1.775 mg/mL. The components of the bioactive casein hydrolysate were analyzed by nanoscale liquid chromatography quadrupole time-of-flight tandem mass spectrometry (NanoLC-Q-TOF-MS/MS). Total of 115 peptides were identified, among which 34, 9, 55 and 17 peptides were derived from α_(s1-), α_(s2-), β-, and κ-casein, respectively. The results of PeptideRanker and PepSite 2 analysis showed that 6 peptides (FRQFYQL, NENLLRF, NPWDQVKR, PVVVPPFLQ, PVRGPFPIIV, and ARHPHPHLSF) have both ACEI and anticoagulant activities by binding to the active sites of ACE and thrombin. This study indicated that casein is a potential functional food supplement that can be used for medical purposes.展开更多
High-nickel single-crystal layered oxide material has become the most promising cathode material for electric vehicle power battery due to its high energy density.However,this material still suffers from structural de...High-nickel single-crystal layered oxide material has become the most promising cathode material for electric vehicle power battery due to its high energy density.However,this material still suffers from structural degradation during cycling and especially the severe interfacial reactions at elevated temperatures that exacerbate irreversible capacity loss.Here,a simple strategy was used to construct a dualfunction Li_(1.5)Al_(0.5)Ge_(1.5)P_(3)O_(12)(LAGP)protective layer on the surface of the high-nickel single-crystal(SC)cathode material,leading to SC@LAGP material.The strong Al-O bonding effectively inhibits the release of lattice oxygen(O)at elevated temperatures,which is supported by the positive formation energy of O vacancy from first-principal calculations.Besides,theoretical calculations demonstrate that the appropriate amount of Al doping accelerates the electron and Li^(+)transport,and thus reduces the kinetic barriers.In addition,the LAGP protective layer alleviates the stress accumulation during cycling and effectively reduces the erosion of materials from the electrolyte decomposition at elevated temperatures.The obtained SC@LAGP cathode material demonstrates much enhanced cycling stability even at high voltage(4.6 V)and elevated temperature(55℃),with a high capacity retention of 91.3%after 100 cycles.This work reports a simple dual-function coating strategy that simultaneously stabilizes the structure and interface of the single-crystal cathode material,which can be applied to design other cathode materials.展开更多
A novel hydrogen-bonded organic frameworks(HOFs)FJU-200 has been constructed from N,N’-bis(5-isophthalic acid)naphthalimide(H_(4)L).FJU-200 has a good dual-function of aniline and ultraviolet detection.FJU-200 is the...A novel hydrogen-bonded organic frameworks(HOFs)FJU-200 has been constructed from N,N’-bis(5-isophthalic acid)naphthalimide(H_(4)L).FJU-200 has a good dual-function of aniline and ultraviolet detection.FJU-200 is the first case of HOF with dual sensing of visual color changes and photoluminescence quenching for aniline detection,and the detection limit of aniline can reach5.5 x 10^(-4)mol/L.Under ultraviolet FJU-200 will rapidly change from light yellow to rustic brown,which makes it possible to use FJU-200 to achieve minute-level ultraviolet detection.Moreover,for more convenient use,FJU-200 test papers are prepared.Using them,convenient and fast aniline or ultraviolet detection can be realized.The single-crystal X-ray structures show that compared with the original FJU-200,both PhNH_(2)@FJU-200 and UV-FJU-200 have larger pore sizes,and the dihedral angles of the H_(2)L^(2-)in framework has been changed.展开更多
The polymer electrolyte based lithium-oxygen battery has showed higher safety than that of organic liquid electrolyte.However,the energy efficiency and cycling stability are still the challenges for the practical appl...The polymer electrolyte based lithium-oxygen battery has showed higher safety than that of organic liquid electrolyte.However,the energy efficiency and cycling stability are still the challenges for the practical application of lithium-oxygen battery.Herein,the 1,4 para benzoquinone has been demonstrated as dual-function redox mediator for promoting both oxygen reduction and oxygen evolution reactions of lithium-oxygen battery with polymer electrolyte,which have been confirmed by the Cyclic Voltammetry and discharge/charge test of battery under O_(2) gas,as well as the theoretical calculations.Furthermore,the composite cathode that in-situ constructed by polymerizing electrolyte precursors with redox me-diator can be beneficial for the electrochemical reactions.Combing composite cathode and lithium ions source,the polymer electrolyte based lithium-oxygen batteries can operate for long lifetime with low charge potentials and good rate performances.Thus,this work has highlighted the promising implementation of lithium-oxygen battery based on polymer electrolyte,in which the dual-function redox mediator are employed for both discharge and recharge processes.展开更多
This paper develops a new transmit beamforming for an integrated mechanical and electrical scanning dual-function radar-communication(DFRC)system.Differing from the related some works using beampattern sidelobe level ...This paper develops a new transmit beamforming for an integrated mechanical and electrical scanning dual-function radar-communication(DFRC)system.Differing from the related some works using beampattern sidelobe level to communication,we exploit the fact that transmit beamforming weight vector u k in directionθand weight vector u*k in direction-θcan achieve the same spatial power distribution,and formulate a new transmit beamforming vector design problem accounting for some extra sidelobe level constraints.By doing so,the number of the transmit beamforming weight vectors and the computing demand in the multi-user communication(MUC)scenario can be reduced.Finally,the numerical examples are designed to verify the effectiveness of the proposed design strategy in comparison with the existing method.展开更多
In the context of abundant marine wind energy resources,offshore wind power presents an effective solution to the current energy crisis,however,the challenges of electromagnetic interference and corrosion faced by off...In the context of abundant marine wind energy resources,offshore wind power presents an effective solution to the current energy crisis,however,the challenges of electromagnetic interference and corrosion faced by offshore wind power generation equipment demand urgent resolution.This study addresses these issues by employing a coordination strategy between deprotonated dopamine and tran-sition metal ions,utilizing compositional regulation and temperature engineering to synthesize a series of carbon/transition metal carbides(TMCs)composite materials.Compositional regulation introduces heterojunction interfaces to enhance dielectric loss,while temperature engineering effectively adjusts the material’s impedance matching.WM@C,with an extremely thin thickness of 1.66 mm,demonstrates a remarkable effective absorption bandwidth(EAB)reaching 5.52 GHz,accompanied by a maximum reflection loss(RL)of-26.8 dB.Notably,attributed to the outstanding anti-chloride ion pitting ability of TMCs and the stacking effect of dense carbon nanosheets on the surface,the synthesized composite coatings demonstrate excellent corrosion protection capabilities.After 10 consecutive days of salt spray test,the EAB of the WM@C still maintains 5.01 GHz at 1.76 mm,a new idea of dual-function integrated materials for microwave absorption(MA)and corrosion protection has been developed,providing theoretical support for the construction of offshore wind power generation equipment.展开更多
Self-standing carbon-based substrates with satisfied structural stability and property adjustability have promising applications in flexible lithium(Li)metal batteries(FLMBs).Current strategies for modifying carbon ma...Self-standing carbon-based substrates with satisfied structural stability and property adjustability have promising applications in flexible lithium(Li)metal batteries(FLMBs).Current strategies for modifying carbon materials are normally carried out on powder carbon,and very few of them are suitable for self-standing carbon substrates.Herein,a pore-forming strategy based on the redox chemistry of metallic oxide nanodots is developed to prepare two porous carbon substrates for anode and cathode.Starting with cotton cloth,the resulting hollow carbon fibers substrate with nanopores effectively prevents from Li dendrites formation and large volume change in lithium metal anode(LMA).Simulations indicate that the porous structure leads to homogeneous ion flux,Li-ion concentration,and electric field during Li deposition.Li symmetrical cell based on this substrate remains stable for 8300 h with an ultralow voltage hysteresis of 9 mV.Via a similar route,porous carbon cloth substrate is obtained for subsequently seeding V_(2)O_(5)nanowires to prepare the cathode.The assembled FLMBs pouch cell delivers a capacity of 8.2 mAh with a high capacity retention of~100%even under dramatic deformation.The demonstrated strategy has far-reaching potential in preparing free-standing porous carbon-based materials for flexible energy storage devices.展开更多
This paper proposes a new information modulation resorting to orthogonal signal and its phase for dual-function radar communication(DFRC)systems.Focusing on the standardized linear frequency modulation(LFM)signal by a...This paper proposes a new information modulation resorting to orthogonal signal and its phase for dual-function radar communication(DFRC)systems.Focusing on the standardized linear frequency modulation(LFM)signal by additional phase,a bank of signals enjoying satisfactory autocorrelation and cross-correlation characteristics,are generated.Then,these signals map the different information as well as their phases are also modulated to increase the communication bit rate,thus yielding a series of dual-use signals.Finally,the radar detection and communication performance of dual-use signals are also provided through numerical simulation and half-physical platform verification,confirming the effectiveness of the designed signals compared with the existing design strategy.展开更多
Mimicking animal skin is an effective strategy for enhancing the performance of artificial skin.Inspired by a chameleon’s iridophore and a spider’s slit organ,a novel photonic-electronic skin(PE-skin)with excellent ...Mimicking animal skin is an effective strategy for enhancing the performance of artificial skin.Inspired by a chameleon’s iridophore and a spider’s slit organ,a novel photonic-electronic skin(PE-skin)with excellent optical/electrical dual-sensing performance was developed by integrating a photonic crystal(PC)with a conductive MXene/silver nanowire(AgNW)composite into adhesive polydimethylsiloxane.The PC layer containing in-plane-spaced and interplane-packed nanoparticle arrays was fabricated via a fast,facile,combined method of“Marangoni self-assembly”,“plasma etching”,and“adhesive PDMS transfer”.Notably,the PC exhibited a red-shift mechanochromic response through in-plane stretching,which is the first report of sharing the same mechanochromic behavior as a chameleon iridophore.The underlying MXene layer formed slit-organ-like cracks that provided high sensitivity,whereas the AgNWs maintained their conductivity under large strains.The resultant PE-skin exhibited a high mechanochromic sensitivity(2.57 nm%−1)and a high electrical gauge factor of 2600 in a large strain-sensing range(up to 85%).These advantages have been confirmed in the detection of full-range human motions,such as speech recognition,using a deep neural network algorithm.The red-shift stretchable PC demonstrates a new paradigm for artificial chameleon skins,and the bionic PC crack bilayer structure extends the design concept for visually interactive e-skins.展开更多
An efficient integration of electrochromic and electrochemical devices into one flexible entity enables both energy storage and energy-saving dual-functionalities.For this purpose,achieving both high electrochromic an...An efficient integration of electrochromic and electrochemical devices into one flexible entity enables both energy storage and energy-saving dual-functionalities.For this purpose,achieving both high electrochromic and electrochemical performance is the key aspect.Herein,a new 3D architecture is successfully made by knotting W_(17)O_(47)@PEDOT(poly(3,4-ethylenedioxythiophene)):PSS(poly(styrenesulfonate))nanowires with NaWO_(3)nanoknots,and interestingly,the 3D W_(17)O_(47)/(NaWO_(3)-knots)@PEDOT:PSS cathode thus-made simultaneously exhibits a large optical modulation(79.7%at 633 nm),an ultra-long cycling life(76%of original optical modulation retained after 12400 cycles),and a high areal capacitance(55.1 mF cm^(-2)at 0.1 mA cm^(-2)).Our density functional theory(DFT)calculations demonstrate that the much improved dual-functional performance is correlated to the raised electronic conductivity and ion adsorption at the W_(17)O_(47)/(NaWO_(3)nanoknots)interface,together with the ion adsorption of PEDOT:PSS in the 3D-knotted architecture.As a proof-of-concept application,different-sized flexible dual-functional electrochromic/electrochemical devices(FDEDs)were assembled and investigated for various application scenarios,including a smart window(15 cm×10 cm),a wearable wristband(20 cm×2.5 cm),and a smart eyeglass.The smart window made of the FDED enables a large temperature difference of 27.6℃ confirm-tested in model houses,where the energy source also powers three light-emitting diodes(LEDs).The understandings of the key governing principles in the electrodes and dual-functionalities provide a timely foundation for the new generation flexible multifunctional devices.展开更多
Lysine lipoylation plays vital roles in cell metabolism and redox processes.For example,removal of lipoylation will decrease pyruvate dehydrogenase activity and affect the citric acid cycle.Despite the important funct...Lysine lipoylation plays vital roles in cell metabolism and redox processes.For example,removal of lipoylation will decrease pyruvate dehydrogenase activity and affect the citric acid cycle.Despite the important functions of lysine lipoylation,the mechanisms for the addition and removal of this modification remain largely unexplored.Very few useful chemical tools are available to study the interactions of lysine lipoylation with its regulatory delipoylation proteins.For example,immunoaffinity purification-mass spectrometry is one of such tools,which highly relies on antibody efficiency and purification techniques.Single-step activity based fluorogenic probes developed by our groups and others is also an efficient method to study the deacylation activity.Affinitybased labeling probe using photo-cross-linker is a powerful platform to study the transient and dynamic interactions of peptide ligands with the interacting proteins.Herein,we have designed and synthesized a dual-function probe KTLlip for studying enzymatic delipoylation(eraser)activity and interaction of lysine lipoylation with the eraser at the same time.We show that KTLlip can be used as a useful tool to detect delipoylation as demonstrated by its ability to fluorescently label the eraser activity of recombinant Sirt2.We envision that the probe will help delineate the roles of delipoylation enzyme in biology.展开更多
The exploration of a dual-functional sensor is the key to effectively detect the Cr(Ⅵ)and Fe(Ⅲ)cations in water,which is important to human health and environmental sustainability.Because of the phase stability and ...The exploration of a dual-functional sensor is the key to effectively detect the Cr(Ⅵ)and Fe(Ⅲ)cations in water,which is important to human health and environmental sustainability.Because of the phase stability and excellent luminescence,the rare-earth coordination polymers have great potential as dual-functional sensors.Here,we develop a Y_(0.91)Eu_(0.09)(H_(2)O)_(2){C_(6)H_(3)(CO_(2))_(3)}(MIL-92(Y):9%Eu^(3+))-based dual-function luminescent sensor on Cr(Ⅵ)and Fe(Ⅲ),which exhibits excellent phase stability and dispersibility in water.The luminescence of MIL-92(Y):9%Eu^(3+)aqueous suspension quenches on Fe^(3+)with Stern-Volmer constant K_(sv) of 1.79×10^(3)M^(-1)and limit of detection of 17μM.The MIL-92(Y):9%Eu^(3+)aqueous suspension also has turn-off sensing ability towards Cr_(2)O_(7)^(2-)and Cr O_(4)^(2-)with K_(sv) values of 3.5×10^(3)and 6.14×10^(3)M^(-1),respectively.It has detection limitations of 10 and 5μM on Cr_(2)O_(7)^(2-)and Cr_(2)O_(7)^(2-)ions,respectively.展开更多
We propose and demonstrate single fiber dual-functionality optical tweezers based on a graded-index multimode fiber. By using the multi-angle fiber grinding and polishing technology, we fabricate the multimode fiber t...We propose and demonstrate single fiber dual-functionality optical tweezers based on a graded-index multimode fiber. By using the multi-angle fiber grinding and polishing technology, we fabricate the multimode fiber tip to be a special tapered shape, contributing to focus the outgoing beam with a large intensity gradient for the first functionality--three-dimensional contactless trapping of a microparticle. By adjusting the radial direction offset between the lead-in single mode fiber and the graded-index multimode fiber, we perform the second functionality--axial shift of the trapped microparticle with respect to the fiber tip without need of moving the fiber probe itself. It is convenient for practical applications, The theoretical and experimental results about the relationship between the radial offset and the equilibrium positions of the microparticle have the good consistency. Tailoring the trap and axial shift of the microparticle based on the graded-index multimode fiber provides convenient avenues for fiber optical tweezers a~）Dlied in practical researches.展开更多
基金financial support of this work by the National Natural Science Foundation of China (51602261 and 51711530037)the Research Fund of the State Key Laboratory of Solidification Processing (NWPU)+1 种基金the Fundamental Research Funds for the Central Universities (3102019JC005)the Key R&D Program of Shanxi (No. 2019ZDLGY04-05)
文摘Coherent manipulation of the lithium plating pattern is at the heart of the safe operation of metallic anodes in the battery technologies. In this article,a lightweight (~0.3 mg cm^(-2)), dual-functionalized carbon spheres are anchored onto the Cu foil as the interfacial protective layer via the chelation process of the catechol groups in the polydopamine precursor and the copper foil. The dual-functionalized carbon spheres exhibit the intriguing complementary features:Lithiophilic nitrogen dopants favor the Li+ion absorption and mitigate the nucleation barrier, while the micro/mesopore reservoir spatially homogenizes the ion flux distribution, confining the metallic propagation without dendrite-like protrusions. The metallic anode exhibits an ultra-stable plating/stripping process for 1 400 hr with the average Coulombic efficiency of ~99%. A full-cell prototype is constructed by pairing the N-doped carbon spheres on the bare Cu (NCS-Cu) electrode with the high-mass-loading LiVPO4F (12.5 mg cm^(-2)) cathode that can deliver a high energy density of 421.2 Wh kg^(-1) with the highest power density of 2106 W kg^(-1) to promise the anode use for high-power/energy-dense metallic batteries.
文摘Starting from the hydroxylamine (dimethyl amino ethanol, triethanolamine) and 1,3-propane sultone, a series of hydroxyl and sulfonyl dual-functionalized zwitterionic salts and corresponding acidic room temperature ionic liquids have been synthesized. The hydroxyl groups of the synthesized substances were confirmed by the 1H NMR measurement. These zwitterionic salts and ionic liquids may be used for synthesizing other functionalized ionic liquids or ionic liquid-polymer (polyelectrolyte).
基金supported by the National Natural Science Foundation of China under grants 62072229,U1936201,62071220,61976113joint project of China Mobile Research Institute&X-NET。
文摘Dual-function communication radar systems use common Radio Frequency(RF)signals are used for both communication and detection.For better compatibility with existing communication systems,we adopt Multiple-Input Multiple-Output(MIMO)Orthogonal Frequency Division Multiplexing(OFDM)signals as integrated signals and investigate the estimation performance of MIMO-OFDM signals.First,we analyze the Cramer-Rao Lower Bound(CRLB)of parameter estimation.Then,the transmit powers over different subcarriers are optimized to achieve the best tradeoff between the transmission rate and the estimation performance.Finally,we propose a more accurate estimation method that uses Canonical Polyadic Decomposition(CPD)of the third-order tensor to obtain the parameter matrices.Due to the characteristic of the column structure of the parameter matrices,we only need to use DFT/IDFT to recover the parameters of multiple targets.The simulation results show that tensor-based estimation method can achieve a performance close to CRLB,and the estimation performance can be improved by optimizing the transmit powers.
基金supported by the National Natural Science Foundation of China(22162008)the Science and Technology Supporting Project of Guizhou Province([2022]208)+1 种基金the Guizhou Province Local Government Overseas Study Programthe open project of Guizhou Provincial Double Carbon and Renewable Energy Technology Innovation Research Institute.
文摘The development of an efficient dual-function catalytic-sorption system,which seamlessly integrates reaction and separation into a single step for extractant-free systems,represents a transformative advancement in oxidative desulfurization(ODS)process.In this work,we introduce a novel dualfunction amphiphilic biochar(Mo/CBC)catalyst,functionalized with MoO_(3-x)featuring abundant oxygen vacancies,for highly effective extractant-free ODS.The polarity of the biochar was precisely tailored by varying the amount of KOH,leading to the creation of amphiphilic carriers.Subsequent ball milling facilitated the successful loading of MoO_(3-x)onto the biochar surface via an impregnation-calcination route leveraging carbon reduction,resulting in the synthesis of amphiphilic Mo/CBC catalysts.The amphiphilic nature of these catalysts ensures their stable dispersion within the oil phase,while also facilitating their interaction with the oxidant H2O2 and the adsorption of sulfur-containing oxidation products.Characterization techniques,including EPR,XPS,and in situ XRD,verified the existence of abundant oxygen vacancies obtained by carbon reduction on the amphiphilic Mo/CBC catalysts,which significantly boosted their activity in an extractant-free ODs system.Remarkably,the amphiphilic Mo/CBC catalyst displayed exceptional catalytic performance,achieving a desulfurization efficiency of 99.6%in just 10 min without extraction solvent.DFT theoretical calculations further revealed that H_(2)O_(2)readily dissociates into two OH radicals on the O_(vac)-MoO_(3),overcoming a low energy barrier.This process was identified as a key contributor to the catalyst's outstanding ODS performance.Furthermore,other biochar sources,such as rice straw,bamboo,rapeseed oil cake,and walnut oil cake,were investigated to produce Mo-based amphiphilic biochar catalysts,which all showed excellent desulfurization performance.This work establishes a versatile and highly efficient dual-function catalytic-sorption system by designing amphiphilic biochar catalysts enriched with oxygen vacancies,paving the way for the development of universally applicable ODS catalysts for industrial applications.
基金support of this work by the project“Development of new innovative low carbon energy technologies to improve excellence in the Region of Western Macedonia”(MIS 5047197),which is implemented under the Action“Reinforcement of the Research and Innovation Infrastructure”funded by the Operational Program“Competitiveness,Entrepreneurship and Innovation”(NSRF 2014-2020)co-financed by Greece and the European Union(European Regional Development Fund)+4 种基金the Hellenic Foundation for Research and Innovation(HFRI)for supporting this research work under the 3~(rd)Call for HFRI PhD Fellowships(Fellowship Number:6033)the support of ELECMI-LMA nodeNanbiosis ICTSsfunded by the Swiss National Science Foundation(Grant:206021_189629)the Research Council of Norway(Grant:296087)。
文摘Herein,the effect of the Ru:Ni bimetallic composition in dual-function materials(DFMs)for the integrated CO_(2)capture and methanation process(ICCU-Methanation)is systematically evaluated and combined with a thorough material characterization,as well as a mechanistic(in-situ diffuse reflectance infrared fourier-transform spectroscopy(in-situ DRIFTS))and computational(computational fluid dynamics(CFD)modelling)investigation,in order to improve the performance of Ni-based DFMs.The bimetallic DFMs are comprised of a main Ni active metallic phase(20 wt%)and are modified with low Ru loadings in the 0.1-1 wt%range(to keep the material cost low),supported on Na_(2)O/Al_(2)O_(3).It is shown that the addition of even a very low Ru loading(0.1-0.2 wt%)can drastically improve the material reducibility,exposing a significantly higher amount of surface-active metallic sites,with Ru being highly dispersed over the support and the Ni phase,while also forming some small Ru particles.This manifests in a significant enhancement in the CH_(4)yield and the CH_(4)production kinetics during ICCU-Methanation(which mainly proceeds via formate intermediates),with 0.2 wt%Ru addition leading to the best results.This bimetallic DFM also shows high stability and a relatively good performance under an oxidizing CO_(2)capture atmosphere.The formation rate of CH_(4)during hydrogenation is then further validated via CFD modelling and the developed model is subsequently applied in the prediction of the effect of other parameters,including the inlet H_(2)concentration,inlet flow rate,dual-fu nction material weight,and reactor internal diameter.
基金supported by the National Natural Science Foundation of China(32101759,32241042)the National Key Research and Development Program of China(2023YFD1200700 and 2023YFD1200704).
文摘Foxtail millet(Setaria italica)is an important crop and an emerging model plant.Photoperiodic flowering is a key determinant of its production and geographic expansion.In this study,we found that SiPRR37 is responsible for the major quantitative trait locus(QTL)Heading date 2(Hd2)identified in 680 foxtail millets using a genome-wide association study.Overexpression of SiPRR37 in foxtail millet significantly delayed the heading date under both natural long-day and short-day conditions.CRISPR/Cas9-induced Siprr37 mutants exhibited earlier flowering in long-day conditions but later flowering in short-day conditions.The critical day length(CDL)for the reversal of Siprr37’s function was around 14.3 h.Haplotype analysis revealed that accessions with the Tc1-Mariner transposon insertion in SiPRR37(Hap 1)flowered significantly earlier at higher latitudes,and later at lower latitudes,indicating that natural variants of SiPRR37 exert dual functions in flowering regulation according to geographic latitude.The gradual,successive decrease in the frequency of Hap 2 from low to high latitudes,with the concurrent increase of Hap 1,demonstrates that these haplotypes have undergone artificial selection.Further FST analysis demonstrated that SiPRR37 has contributed to the ecological adaption of foxtail millet.Additionally,we reveal that OsPRR37 promotes flowering in rice,while GmPRR37 may only inhibit flowering in soybean.Further diurnal expression and transgenic analyses suggest that the dual function of SiPRR37 might depend on SiHd1.Our study uncovered the distinct functional reversal of SiPRR37 and functional diversification of PRR37 homologs in SD crops.These findings not only enrich knowledge about the regulation of photoperiodic flowering,but also contribute to genetic improvement of crops’regional adaptability.
基金Recruitment Program of Global Experts(China)the Hundred-Talent Project of Fujian+1 种基金Fuzhou UniversityFuda Zijin Hydrogen Energy Technology Co.,Ltd for the financial support。
文摘The electrochemical instability of traditional ether-based electrolytes poses a challenge for their use in high-voltage lithium metal batteries.Herein,a synergetic optimization strategy was proposed by introducing an additive with a strong electron-withdrawing group and significant steric hindrance-isosorbide dinitrate(ISDN),reconstructing the solvation structure and solid electrolyte interphase(SEI),enabling highly stable and efficient lithium metal batteries.We found that ISDN can strengthen the interaction between Li^(+)and the anions of lithium salts and weaken the interaction between Li^(+)and the solvent in the solvation structure.It promotes the formation of a LiF-rich and LiN_(x)O_(y)-rich SEI layer,enhancing the uniformity and compactness of Li deposition and inhibiting solvent decomposition,which effectively expands the electrochemical window to 4.8 V.The optimized Li‖Li cells offer stable cycling over 1000 h with an overpotential of only 57.7 mV at 1 mA cm^(-2).Significantly,Li‖3.7 mA h LiFePO_(4)cells retain 108.3%of initial capacity after 546 cycles at a rate of 3 C.Under high-loading conditions(Li‖4.9 mA h LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)full cells)and a cutoff voltage of 4.5 V,the ISDN-containing electrolyte enables stable cycling for 140 cycles.This study leverages steric hindrance and electron-withdrawing effect to synergistically reconstruct the Li^(+)solvation structure and promote stable SEI formation,establishing a novel electrolyte paradigm for high-energy lithium metal batteries.
基金The China Postdoctoral Science Foundation(2019M661072)the Basic Research Program of Liaoning Education Department(2017J080)the National Natural Science Foundation of China(31771926)funded this study.
文摘There is no study on food-derived peptide with both anticoagulant and angiotensin I-converting enzyme inhibitory (ACEI) activities yet. In this work, the anticoagulant and ACEI activities of the casein hydrolysates released by pepsin digestion were evaluated for the first time to the best of our knowledge. Results indicated that the casein hydrolysate exhibited potent anticoagulant activity by prolonging the thrombin time (TT) and the activated partial thromboplastin time (APTT). Compared with control samples, at 10 mg/mL, the TT and APTT of casein hydrolysate were 186.0 % ± 6.6 % and 163.5 % ± 7.4 %, respectively. The casein hydrolysate also showed a strong ACEI activity with an IC50 value of 1.775 mg/mL. The components of the bioactive casein hydrolysate were analyzed by nanoscale liquid chromatography quadrupole time-of-flight tandem mass spectrometry (NanoLC-Q-TOF-MS/MS). Total of 115 peptides were identified, among which 34, 9, 55 and 17 peptides were derived from α_(s1-), α_(s2-), β-, and κ-casein, respectively. The results of PeptideRanker and PepSite 2 analysis showed that 6 peptides (FRQFYQL, NENLLRF, NPWDQVKR, PVVVPPFLQ, PVRGPFPIIV, and ARHPHPHLSF) have both ACEI and anticoagulant activities by binding to the active sites of ACE and thrombin. This study indicated that casein is a potential functional food supplement that can be used for medical purposes.
基金financially supported by the National Natural Science Foundation of China(51974368,51774333)the Hunan Provincial Natural Science Foundation of China(2020JJ2048)。
文摘High-nickel single-crystal layered oxide material has become the most promising cathode material for electric vehicle power battery due to its high energy density.However,this material still suffers from structural degradation during cycling and especially the severe interfacial reactions at elevated temperatures that exacerbate irreversible capacity loss.Here,a simple strategy was used to construct a dualfunction Li_(1.5)Al_(0.5)Ge_(1.5)P_(3)O_(12)(LAGP)protective layer on the surface of the high-nickel single-crystal(SC)cathode material,leading to SC@LAGP material.The strong Al-O bonding effectively inhibits the release of lattice oxygen(O)at elevated temperatures,which is supported by the positive formation energy of O vacancy from first-principal calculations.Besides,theoretical calculations demonstrate that the appropriate amount of Al doping accelerates the electron and Li^(+)transport,and thus reduces the kinetic barriers.In addition,the LAGP protective layer alleviates the stress accumulation during cycling and effectively reduces the erosion of materials from the electrolyte decomposition at elevated temperatures.The obtained SC@LAGP cathode material demonstrates much enhanced cycling stability even at high voltage(4.6 V)and elevated temperature(55℃),with a high capacity retention of 91.3%after 100 cycles.This work reports a simple dual-function coating strategy that simultaneously stabilizes the structure and interface of the single-crystal cathode material,which can be applied to design other cathode materials.
基金supported by the National Natural Science Foundation of China(Nos.21673039,21573042,21805039,21975044,21971038 and 21922810)the Fujian Provincial Department of Science and Technology(Nos.2018J07001 and2019H6012)。
文摘A novel hydrogen-bonded organic frameworks(HOFs)FJU-200 has been constructed from N,N’-bis(5-isophthalic acid)naphthalimide(H_(4)L).FJU-200 has a good dual-function of aniline and ultraviolet detection.FJU-200 is the first case of HOF with dual sensing of visual color changes and photoluminescence quenching for aniline detection,and the detection limit of aniline can reach5.5 x 10^(-4)mol/L.Under ultraviolet FJU-200 will rapidly change from light yellow to rustic brown,which makes it possible to use FJU-200 to achieve minute-level ultraviolet detection.Moreover,for more convenient use,FJU-200 test papers are prepared.Using them,convenient and fast aniline or ultraviolet detection can be realized.The single-crystal X-ray structures show that compared with the original FJU-200,both PhNH_(2)@FJU-200 and UV-FJU-200 have larger pore sizes,and the dihedral angles of the H_(2)L^(2-)in framework has been changed.
基金financially supported by the National Natural Science Foundation of China (Nos. 21875007 and 22075007)the Beijing Natural Science Foundation (No. JQ19003, KZ201910005002 and L182009)+1 种基金the Project of Youth Talent Plan of Beijing Municipal Education Commission (No. CIT&TCD201804013)the Highgrade discipline construction of Beijing (No. PXM2019–014204–500031)
文摘The polymer electrolyte based lithium-oxygen battery has showed higher safety than that of organic liquid electrolyte.However,the energy efficiency and cycling stability are still the challenges for the practical application of lithium-oxygen battery.Herein,the 1,4 para benzoquinone has been demonstrated as dual-function redox mediator for promoting both oxygen reduction and oxygen evolution reactions of lithium-oxygen battery with polymer electrolyte,which have been confirmed by the Cyclic Voltammetry and discharge/charge test of battery under O_(2) gas,as well as the theoretical calculations.Furthermore,the composite cathode that in-situ constructed by polymerizing electrolyte precursors with redox me-diator can be beneficial for the electrochemical reactions.Combing composite cathode and lithium ions source,the polymer electrolyte based lithium-oxygen batteries can operate for long lifetime with low charge potentials and good rate performances.Thus,this work has highlighted the promising implementation of lithium-oxygen battery based on polymer electrolyte,in which the dual-function redox mediator are employed for both discharge and recharge processes.
基金This work was supported by Chongqing Key Laboratory of Geological Environment Monitoring and Disaster Early-warning in Three Gorges Reservoir Area(No.MP2020B0101)Natural Science Foundation of Chongqing(No.cstc2019jcyj-msxm1328)。
文摘This paper develops a new transmit beamforming for an integrated mechanical and electrical scanning dual-function radar-communication(DFRC)system.Differing from the related some works using beampattern sidelobe level to communication,we exploit the fact that transmit beamforming weight vector u k in directionθand weight vector u*k in direction-θcan achieve the same spatial power distribution,and formulate a new transmit beamforming vector design problem accounting for some extra sidelobe level constraints.By doing so,the number of the transmit beamforming weight vectors and the computing demand in the multi-user communication(MUC)scenario can be reduced.Finally,the numerical examples are designed to verify the effectiveness of the proposed design strategy in comparison with the existing method.
基金supported by the National Key R&D Program of China(No.2021YFB3502500)the National Natural Science Foun-dation of China(Nos.52172091 and 52172295)+3 种基金the Open Fund of Key Laboratory of Materials Preparation and Protection for Harsh Environment(Nanjing University of Aeronautics and Astronautics)the Ministry of Industry and Information Technology(No.56XCA23005)the Opening Project of Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology(No.ASMA202303)Major Program for the Fundamental Research of Jiangsu province(SBK2023050110).
文摘In the context of abundant marine wind energy resources,offshore wind power presents an effective solution to the current energy crisis,however,the challenges of electromagnetic interference and corrosion faced by offshore wind power generation equipment demand urgent resolution.This study addresses these issues by employing a coordination strategy between deprotonated dopamine and tran-sition metal ions,utilizing compositional regulation and temperature engineering to synthesize a series of carbon/transition metal carbides(TMCs)composite materials.Compositional regulation introduces heterojunction interfaces to enhance dielectric loss,while temperature engineering effectively adjusts the material’s impedance matching.WM@C,with an extremely thin thickness of 1.66 mm,demonstrates a remarkable effective absorption bandwidth(EAB)reaching 5.52 GHz,accompanied by a maximum reflection loss(RL)of-26.8 dB.Notably,attributed to the outstanding anti-chloride ion pitting ability of TMCs and the stacking effect of dense carbon nanosheets on the surface,the synthesized composite coatings demonstrate excellent corrosion protection capabilities.After 10 consecutive days of salt spray test,the EAB of the WM@C still maintains 5.01 GHz at 1.76 mm,a new idea of dual-function integrated materials for microwave absorption(MA)and corrosion protection has been developed,providing theoretical support for the construction of offshore wind power generation equipment.
基金supported by NSFC(22035001,21574018,51433003)the National Science and Engineering Council of Canada,and the Fundamental Research Funds for the Central Universities(2412019ZD002)。
文摘Self-standing carbon-based substrates with satisfied structural stability and property adjustability have promising applications in flexible lithium(Li)metal batteries(FLMBs).Current strategies for modifying carbon materials are normally carried out on powder carbon,and very few of them are suitable for self-standing carbon substrates.Herein,a pore-forming strategy based on the redox chemistry of metallic oxide nanodots is developed to prepare two porous carbon substrates for anode and cathode.Starting with cotton cloth,the resulting hollow carbon fibers substrate with nanopores effectively prevents from Li dendrites formation and large volume change in lithium metal anode(LMA).Simulations indicate that the porous structure leads to homogeneous ion flux,Li-ion concentration,and electric field during Li deposition.Li symmetrical cell based on this substrate remains stable for 8300 h with an ultralow voltage hysteresis of 9 mV.Via a similar route,porous carbon cloth substrate is obtained for subsequently seeding V_(2)O_(5)nanowires to prepare the cathode.The assembled FLMBs pouch cell delivers a capacity of 8.2 mAh with a high capacity retention of~100%even under dramatic deformation.The demonstrated strategy has far-reaching potential in preparing free-standing porous carbon-based materials for flexible energy storage devices.
基金This work was supported in part by the National Natural Science Foundation of China(61771109,U19B2017,61871080,61701088)the China Postdoctoral Science Foundation(2020M68147)。
文摘This paper proposes a new information modulation resorting to orthogonal signal and its phase for dual-function radar communication(DFRC)systems.Focusing on the standardized linear frequency modulation(LFM)signal by additional phase,a bank of signals enjoying satisfactory autocorrelation and cross-correlation characteristics,are generated.Then,these signals map the different information as well as their phases are also modulated to increase the communication bit rate,thus yielding a series of dual-use signals.Finally,the radar detection and communication performance of dual-use signals are also provided through numerical simulation and half-physical platform verification,confirming the effectiveness of the designed signals compared with the existing design strategy.
基金supported by the Basic and Applied Basic Research Foundation of Guangdong province(2024A1515030155,2022A1515010272,2024A1515012609,2022A1515140055,2023A1515011459,2022A1515011671,2022A1515140055)Natural Science Foundation of China(61904067,62475101,62175094,62275109)+1 种基金Knowledge Innovation Program of Wuhan-Basi Research(2023020201010183)Guangzhou-Jinan University Municipal and University Joint Funding Programs(202201020045).
文摘Mimicking animal skin is an effective strategy for enhancing the performance of artificial skin.Inspired by a chameleon’s iridophore and a spider’s slit organ,a novel photonic-electronic skin(PE-skin)with excellent optical/electrical dual-sensing performance was developed by integrating a photonic crystal(PC)with a conductive MXene/silver nanowire(AgNW)composite into adhesive polydimethylsiloxane.The PC layer containing in-plane-spaced and interplane-packed nanoparticle arrays was fabricated via a fast,facile,combined method of“Marangoni self-assembly”,“plasma etching”,and“adhesive PDMS transfer”.Notably,the PC exhibited a red-shift mechanochromic response through in-plane stretching,which is the first report of sharing the same mechanochromic behavior as a chameleon iridophore.The underlying MXene layer formed slit-organ-like cracks that provided high sensitivity,whereas the AgNWs maintained their conductivity under large strains.The resultant PE-skin exhibited a high mechanochromic sensitivity(2.57 nm%−1)and a high electrical gauge factor of 2600 in a large strain-sensing range(up to 85%).These advantages have been confirmed in the detection of full-range human motions,such as speech recognition,using a deep neural network algorithm.The red-shift stretchable PC demonstrates a new paradigm for artificial chameleon skins,and the bionic PC crack bilayer structure extends the design concept for visually interactive e-skins.
基金Shanghai Municipal Education Commission,Grant/Award Number:2019-01-07-00-09-E00020Shanghai Municipal Science and Technology Commission,Grant/Award Number:18JC1412800Singapore Ministry of Education,Grant/Award Number:MOE2018-T2-2-095。
文摘An efficient integration of electrochromic and electrochemical devices into one flexible entity enables both energy storage and energy-saving dual-functionalities.For this purpose,achieving both high electrochromic and electrochemical performance is the key aspect.Herein,a new 3D architecture is successfully made by knotting W_(17)O_(47)@PEDOT(poly(3,4-ethylenedioxythiophene)):PSS(poly(styrenesulfonate))nanowires with NaWO_(3)nanoknots,and interestingly,the 3D W_(17)O_(47)/(NaWO_(3)-knots)@PEDOT:PSS cathode thus-made simultaneously exhibits a large optical modulation(79.7%at 633 nm),an ultra-long cycling life(76%of original optical modulation retained after 12400 cycles),and a high areal capacitance(55.1 mF cm^(-2)at 0.1 mA cm^(-2)).Our density functional theory(DFT)calculations demonstrate that the much improved dual-functional performance is correlated to the raised electronic conductivity and ion adsorption at the W_(17)O_(47)/(NaWO_(3)nanoknots)interface,together with the ion adsorption of PEDOT:PSS in the 3D-knotted architecture.As a proof-of-concept application,different-sized flexible dual-functional electrochromic/electrochemical devices(FDEDs)were assembled and investigated for various application scenarios,including a smart window(15 cm×10 cm),a wearable wristband(20 cm×2.5 cm),and a smart eyeglass.The smart window made of the FDED enables a large temperature difference of 27.6℃ confirm-tested in model houses,where the energy source also powers three light-emitting diodes(LEDs).The understandings of the key governing principles in the electrodes and dual-functionalities provide a timely foundation for the new generation flexible multifunctional devices.
基金supported by the Science Technology and Innovation Committee of Shenzhen Municipality(Grant Nos.JCYJ20180507181654823 and JCYJ20170413141047772)the National Natural Science Foundation of China(Grant No.21778044).
文摘Lysine lipoylation plays vital roles in cell metabolism and redox processes.For example,removal of lipoylation will decrease pyruvate dehydrogenase activity and affect the citric acid cycle.Despite the important functions of lysine lipoylation,the mechanisms for the addition and removal of this modification remain largely unexplored.Very few useful chemical tools are available to study the interactions of lysine lipoylation with its regulatory delipoylation proteins.For example,immunoaffinity purification-mass spectrometry is one of such tools,which highly relies on antibody efficiency and purification techniques.Single-step activity based fluorogenic probes developed by our groups and others is also an efficient method to study the deacylation activity.Affinitybased labeling probe using photo-cross-linker is a powerful platform to study the transient and dynamic interactions of peptide ligands with the interacting proteins.Herein,we have designed and synthesized a dual-function probe KTLlip for studying enzymatic delipoylation(eraser)activity and interaction of lysine lipoylation with the eraser at the same time.We show that KTLlip can be used as a useful tool to detect delipoylation as demonstrated by its ability to fluorescently label the eraser activity of recombinant Sirt2.We envision that the probe will help delineate the roles of delipoylation enzyme in biology.
基金supported by the National Natural Science Foundation of China(51972061)。
文摘The exploration of a dual-functional sensor is the key to effectively detect the Cr(Ⅵ)and Fe(Ⅲ)cations in water,which is important to human health and environmental sustainability.Because of the phase stability and excellent luminescence,the rare-earth coordination polymers have great potential as dual-functional sensors.Here,we develop a Y_(0.91)Eu_(0.09)(H_(2)O)_(2){C_(6)H_(3)(CO_(2))_(3)}(MIL-92(Y):9%Eu^(3+))-based dual-function luminescent sensor on Cr(Ⅵ)and Fe(Ⅲ),which exhibits excellent phase stability and dispersibility in water.The luminescence of MIL-92(Y):9%Eu^(3+)aqueous suspension quenches on Fe^(3+)with Stern-Volmer constant K_(sv) of 1.79×10^(3)M^(-1)and limit of detection of 17μM.The MIL-92(Y):9%Eu^(3+)aqueous suspension also has turn-off sensing ability towards Cr_(2)O_(7)^(2-)and Cr O_(4)^(2-)with K_(sv) values of 3.5×10^(3)and 6.14×10^(3)M^(-1),respectively.It has detection limitations of 10 and 5μM on Cr_(2)O_(7)^(2-)and Cr_(2)O_(7)^(2-)ions,respectively.
基金supported by the National Natural Science Foundation of China(Nos.11574061,61405043,and 61675053)the 111 Project(No.B13015)the Fundamental Research Funds for Harbin Engineering University of China
文摘We propose and demonstrate single fiber dual-functionality optical tweezers based on a graded-index multimode fiber. By using the multi-angle fiber grinding and polishing technology, we fabricate the multimode fiber tip to be a special tapered shape, contributing to focus the outgoing beam with a large intensity gradient for the first functionality--three-dimensional contactless trapping of a microparticle. By adjusting the radial direction offset between the lead-in single mode fiber and the graded-index multimode fiber, we perform the second functionality--axial shift of the trapped microparticle with respect to the fiber tip without need of moving the fiber probe itself. It is convenient for practical applications, The theoretical and experimental results about the relationship between the radial offset and the equilibrium positions of the microparticle have the good consistency. Tailoring the trap and axial shift of the microparticle based on the graded-index multimode fiber provides convenient avenues for fiber optical tweezers a~）Dlied in practical researches.
