The development of multi-stimuli-responsive luminescent system to address emerging demands is essential in anti-counterfeiting field.Herein,a photoswitchable system was reported,which was constructed from photoacid su...The development of multi-stimuli-responsive luminescent system to address emerging demands is essential in anti-counterfeiting field.Herein,a photoswitchable system was reported,which was constructed from photoacid sulfonato-merocyanine(MEH-D)serving as H+donor and diarylethene derivative(DAEA1)as acceptor.After capturing 2 equiv.HCl,the obtained fluorescent molecule DAE-A1-H showed solvatochromic property.Further on,benefiting from that MEH-D released protons and became a ring-closed isomer spiropyran(SP-D)under 440 nm irradiation,DAE-A1 was protonated,turning on fluorescence effect was realized in DAE-A1/MEH-D.In dark,a photo-activated reversible process was realized with SPD changed to MEH-D in situ system.In addition,the OF-DAE-A1-H/SP-D could efficiently and reversibly switch on/off its luminescence upon irradiation by UV–vis light.Significantly,the multi-stimuli-responsive system was successfully applied in logic gate and fluorescence ink,making it an efficient strategy for information encryption and decryption with higher security requirements.展开更多
Stimuli-responsive luminescent materials have attracted significant attention in the development of smart photoactive materials for both fundamental research and technological applications.In this work,a new copper io...Stimuli-responsive luminescent materials have attracted significant attention in the development of smart photoactive materials for both fundamental research and technological applications.In this work,a new copper iodide cluster(1)with aggregationinduced emission(AIE)characteristic,was obtained combining Cu_(4)I_(4) core with rhodamine B derivative ligand.1 has reversible and distinct multi-stimuli-responsive luminescence for external temperature,volatile organic compound,and mechanical force.Significantly,1 exhibited unusual large blue shift(84 nm)after being ground,which originated from the change of intermolecular interactions.Moreover,1 exhibits high oxygen quenching efficiency for 82.2% at 1 bar.Mechanistic studies showed that the multi-stimuli-responsive luminescence properties of 1 can be attributed to the regulation of cluster-centered luminescence process,metal-to-ligand charge transfer process,halide-to-metal charge transfer luminescence process and aggregationinduced barrier to oxygen process.This work not only reports an AIE copper iodide cluster,but also provides a new strategy to develop multi-stimuli-responsive luminescence materials.展开更多
Recent advances in functionally graded additive manufacturing(FGAM)technology have enabled the seamless hybridization of multiple functionalities in a single structure.Soft robotics can become one of the largest benef...Recent advances in functionally graded additive manufacturing(FGAM)technology have enabled the seamless hybridization of multiple functionalities in a single structure.Soft robotics can become one of the largest beneficiaries of these advances,through the design of a facile four-dimensional(4D)FGAM process that can grant an intelligent stimuli-responsive mechanical functionality to the printed objects.Herein,we present a simple binder jetting approach for the 4D printing of functionally graded porous multi-materials(FGMM)by introducing rationally designed graded multiphase feeder beds.Compositionally graded cross-linking agents gradually form stable porous network structures within aqueous polymer particles,enabling programmable hygroscopic deformation without complex mechanical designs.Furthermore,a systematic bed design incorporating additional functional agents enables a multi-stimuli-responsive and untethered soft robot with stark stimulus selectivity.The biodegradability of the proposed 4D-printed soft robot further ensures the sustainability of our approach,with immediate degradation rates of 96.6%within 72 h.The proposed 4D printing concept for FGMMs can create new opportunities for intelligent and sustainable additive manufacturing in soft robotics.展开更多
The advancement of multifunctional fluorescent probes for monitoring diverse environmental parameters is of paramount importance.In this study,we engineered dual-chromophore fluorescent probe,DBT,that responds to mult...The advancement of multifunctional fluorescent probes for monitoring diverse environmental parameters is of paramount importance.In this study,we engineered dual-chromophore fluorescent probe,DBT,that responds to multiple stimuli by integrating functional groups with unique characteristics.Notably,the probe DBT exhibits pronounced bimodal emission under specific conditions,with its fluorescence shifting between red and blue in response to alterations in solvent composition,humidity levels,and temperature variations.Significantly,DBT facilitates the differentiation and visual identification of eight solvents,and permits the quantitative detection of trace water content in organic solvents.Additionally,it allows for the visual detection of gasoline.These findings herald the development of single-molecule fluorescent materials capable of responding to multiple stimulus,paving the way for simultaneous multi-stimuli detection and discrimination invarious applications.展开更多
Room-temperature phosphorescence(RTP)materials have experienced rapid development due to their potential in organic light-emitting diode,information security,bioimaging,etc.However,the design of chiral organic phospho...Room-temperature phosphorescence(RTP)materials have experienced rapid development due to their potential in organic light-emitting diode,information security,bioimaging,etc.However,the design of chiral organic phosphors with circularly polarized RTP(CPP)property remains a formidable challenge.Here,we introduce a chiral perturbation approach using a combination of chiral binaphthol and phenoselenazine derivative to achieve CPP.The photoactivated CPP in polystyrene(PS)film demonstrates a luminescence dissymmetry factor(glum),emission efficiency,and RTP lifetime up to 9.32×10^(–3),27.0%,and 40.0 ms,respectively.The remarkable sensitivity of PS film to oxygen and temperature enables the adjustable emission colors,ranging from green to offwhite and blue under varying conditions.The doping systems,utilizing hosts of triphenylphosphine and 9-phenylcarbazole,demonstrate an extended CPP lifetime of 85.9 ms and exhibit a persistent mechanoluminescence property with low pressure response threshold as low as 0.15 N.The information security provided by this CPP material was attained via the using of diverse emission colors and afterglow generated by distinct UV irradiation times and host materials.Alternately,it can also be achieved by observing different emission patterns using R-and L-polarizer.The research has presented a reliable approach for producing CPP materials with high emission efficiency and glum.展开更多
基金financially supported by Natural Science Foundation of Shandong Province(Nos.ZR2022QB061,2022KJ181)National Key R&D Program of China(No.2023YFD1700903)。
文摘The development of multi-stimuli-responsive luminescent system to address emerging demands is essential in anti-counterfeiting field.Herein,a photoswitchable system was reported,which was constructed from photoacid sulfonato-merocyanine(MEH-D)serving as H+donor and diarylethene derivative(DAEA1)as acceptor.After capturing 2 equiv.HCl,the obtained fluorescent molecule DAE-A1-H showed solvatochromic property.Further on,benefiting from that MEH-D released protons and became a ring-closed isomer spiropyran(SP-D)under 440 nm irradiation,DAE-A1 was protonated,turning on fluorescence effect was realized in DAE-A1/MEH-D.In dark,a photo-activated reversible process was realized with SPD changed to MEH-D in situ system.In addition,the OF-DAE-A1-H/SP-D could efficiently and reversibly switch on/off its luminescence upon irradiation by UV–vis light.Significantly,the multi-stimuli-responsive system was successfully applied in logic gate and fluorescence ink,making it an efficient strategy for information encryption and decryption with higher security requirements.
基金supported by the National Natural Science Foundation of China(92061201,21825106,22371264,22301283)the Excellent Young Scientist Fundation of Henan Province(202300410374)+1 种基金the Program for Science&Technology Innovation Talents in Universities of Henan Province(22HASTIT002)Zhongyuan Thousand Talents(Zhongyuan Scholars)Program of Henan Province(234000510007)。
文摘Stimuli-responsive luminescent materials have attracted significant attention in the development of smart photoactive materials for both fundamental research and technological applications.In this work,a new copper iodide cluster(1)with aggregationinduced emission(AIE)characteristic,was obtained combining Cu_(4)I_(4) core with rhodamine B derivative ligand.1 has reversible and distinct multi-stimuli-responsive luminescence for external temperature,volatile organic compound,and mechanical force.Significantly,1 exhibited unusual large blue shift(84 nm)after being ground,which originated from the change of intermolecular interactions.Moreover,1 exhibits high oxygen quenching efficiency for 82.2% at 1 bar.Mechanistic studies showed that the multi-stimuli-responsive luminescence properties of 1 can be attributed to the regulation of cluster-centered luminescence process,metal-to-ligand charge transfer process,halide-to-metal charge transfer luminescence process and aggregationinduced barrier to oxygen process.This work not only reports an AIE copper iodide cluster,but also provides a new strategy to develop multi-stimuli-responsive luminescence materials.
基金supported by National R&D Program through the NRF funded by Ministry of Science and ICT(2021M3D1A2049315)and the Technology Innovation Program(20021909,Development of H2 gas detection films(?0.1%)and process technologies)funded by the Ministry of Trade,Industry&Energy(MOTIE,Korea)supported by the Basic Science Program through the NRF of Korea,funded by the Ministry of Science and ICT,Korea.(Project Number:NRF-2022R1C1C1008845)supported by Basic Science Research Program through the NRF funded by the Ministry of Education(Project Number:NRF-2022R1A6A3A13073158)。
文摘Recent advances in functionally graded additive manufacturing(FGAM)technology have enabled the seamless hybridization of multiple functionalities in a single structure.Soft robotics can become one of the largest beneficiaries of these advances,through the design of a facile four-dimensional(4D)FGAM process that can grant an intelligent stimuli-responsive mechanical functionality to the printed objects.Herein,we present a simple binder jetting approach for the 4D printing of functionally graded porous multi-materials(FGMM)by introducing rationally designed graded multiphase feeder beds.Compositionally graded cross-linking agents gradually form stable porous network structures within aqueous polymer particles,enabling programmable hygroscopic deformation without complex mechanical designs.Furthermore,a systematic bed design incorporating additional functional agents enables a multi-stimuli-responsive and untethered soft robot with stark stimulus selectivity.The biodegradability of the proposed 4D-printed soft robot further ensures the sustainability of our approach,with immediate degradation rates of 96.6%within 72 h.The proposed 4D printing concept for FGMMs can create new opportunities for intelligent and sustainable additive manufacturing in soft robotics.
基金support from the National Key Research Development Program of China(2022YFA1205502)National Natural Science Foundation(21972086,22202128)+2 种基金Shaanxi Fundamental Science Research Project for Chemistry and Biology(23JHQ074)the Innovation Capability Support Program of Shaanxi(2021TD-18)the Fundamental Research Funds for the Central Universities(GK202406019).
文摘The advancement of multifunctional fluorescent probes for monitoring diverse environmental parameters is of paramount importance.In this study,we engineered dual-chromophore fluorescent probe,DBT,that responds to multiple stimuli by integrating functional groups with unique characteristics.Notably,the probe DBT exhibits pronounced bimodal emission under specific conditions,with its fluorescence shifting between red and blue in response to alterations in solvent composition,humidity levels,and temperature variations.Significantly,DBT facilitates the differentiation and visual identification of eight solvents,and permits the quantitative detection of trace water content in organic solvents.Additionally,it allows for the visual detection of gasoline.These findings herald the development of single-molecule fluorescent materials capable of responding to multiple stimulus,paving the way for simultaneous multi-stimuli detection and discrimination invarious applications.
基金National Natural Science Foundation of China(No.21905198)starting Grants of Tianjin University,Tianjin Government for financial support.
文摘Room-temperature phosphorescence(RTP)materials have experienced rapid development due to their potential in organic light-emitting diode,information security,bioimaging,etc.However,the design of chiral organic phosphors with circularly polarized RTP(CPP)property remains a formidable challenge.Here,we introduce a chiral perturbation approach using a combination of chiral binaphthol and phenoselenazine derivative to achieve CPP.The photoactivated CPP in polystyrene(PS)film demonstrates a luminescence dissymmetry factor(glum),emission efficiency,and RTP lifetime up to 9.32×10^(–3),27.0%,and 40.0 ms,respectively.The remarkable sensitivity of PS film to oxygen and temperature enables the adjustable emission colors,ranging from green to offwhite and blue under varying conditions.The doping systems,utilizing hosts of triphenylphosphine and 9-phenylcarbazole,demonstrate an extended CPP lifetime of 85.9 ms and exhibit a persistent mechanoluminescence property with low pressure response threshold as low as 0.15 N.The information security provided by this CPP material was attained via the using of diverse emission colors and afterglow generated by distinct UV irradiation times and host materials.Alternately,it can also be achieved by observing different emission patterns using R-and L-polarizer.The research has presented a reliable approach for producing CPP materials with high emission efficiency and glum.
