Poly（4-vinyl pyridine） supported nanoparticle of copper（Ⅰ） iodide is reported as a green and recyclable catalyst for the regioselective synthesis of 1,4-disubstituted-1H-1,2,3-triazoles from benzyl halides,sodium...Poly（4-vinyl pyridine） supported nanoparticle of copper（Ⅰ） iodide is reported as a green and recyclable catalyst for the regioselective synthesis of 1,4-disubstituted-1H-1,2,3-triazoles from benzyl halides,sodium azide and terminal alkynes in water. This catalyst can be recovered by simple filtration and recycled up to 8 consecutive runs without any loss of its efficiency.展开更多
A new strategy of improving the stability of organic-inorganic hybrid materials by increasing the charge of organic compounds to enhance the strength of ionic bonds has been demonstrated.Based on this method,we have d...A new strategy of improving the stability of organic-inorganic hybrid materials by increasing the charge of organic compounds to enhance the strength of ionic bonds has been demonstrated.Based on this method,we have designed and synthesized a series of ionic copper iodide hybrid structures with significantly improved stability and excellent photo/radio-luminescence,showing potential as new solid-state lighting phosphors and X-ray scintillators.展开更多
Stimuli responsive phosphors with photoluminescence and thermoresponsive luminescence are intriguing for information encryption applications.Herein,two solvent-mediated,stimuli responsive phosphors based on phosphine-...Stimuli responsive phosphors with photoluminescence and thermoresponsive luminescence are intriguing for information encryption applications.Herein,two solvent-mediated,stimuli responsive phosphors based on phosphine-copper(I)iodide complexes 1 and 2 are reported.Complex 1 exhibited temperature-and excitation-wavelength-dependent dual-emission characteristics,displaying high energy(HE)and low energy(LE)bands with the quantum yield(QY)of 38.5%under 365 nm irradiation;but complex 2 exhibited no emission.The LE emission can be attributed to a triplet halide-to-metal charge transfer(^(3)XMCT)and copper-centered 4d→3s,3p transitions,whereas the HE emission originates from a triplet halide-to-ligand charge-transfer(^(3)XLCT).Importantly,in complex 2,the strong C—H∙∙∙Cl interaction in the supramolecular crystal lattice annihilated the sensitive cluster centered(3CC)excited state.Intriguingly,only the HE emission band of complex 2 can be successfully activated by high-energy excitation or changing the temperature.Nevertheless,the QY of complex 2 is 15.6%under 310 nm irradiation,which is smaller than that of complex 1 of 49.8%.This behavior was further confirmed by heating,where both complexes show HE emission.The reversible crystal transformation between complexes 1 and 2 was achieved.Furthermore,the reversible excitation-wavelength-dependent dual-emission and thermoresponsive properties make these phosphors suitable candidates for anti-counterfeiting and information encryption applications.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
Tetrazole-l-acetic acid was found to serve as a superior ligand for Cul-catalyzed N-arylation of imidazoles with aryl iodides under a low catalyst loading （5 mol% of Cul）. A variety of aryl iodides could he aminated...Tetrazole-l-acetic acid was found to serve as a superior ligand for Cul-catalyzed N-arylation of imidazoles with aryl iodides under a low catalyst loading （5 mol% of Cul）. A variety of aryl iodides could he aminated to provide the N-arylated products in good to excellent yields without the need of an inert atmosphere.展开更多
The title compound,[Cu4I4（C4H8N4）4],has been synthesized and characterized by single-crystal X-ray diffraction analysis.It crystallizes in monoclinic,space group Pbca,with a=18.1851（10）,b=9.3697（5）,c=19.8034（10...The title compound,[Cu4I4（C4H8N4）4],has been synthesized and characterized by single-crystal X-ray diffraction analysis.It crystallizes in monoclinic,space group Pbca,with a=18.1851（10）,b=9.3697（5）,c=19.8034（10）A,V=3374.3（3）A^3,C16H32Cu4I4N16,Mr=1210.34,Z=4,Dc=2.383 g/cm^3,μ=6.183 mm^-1,F（000）=2272,S=1.032,the final R=0.0309 and wR=0.1180 for 3854 observer reflections（I〉2σ（I））.The structure of the title compound consists of tetranuclear copper cluster units bridged by the halogen atoms with the 3,5-dimethyl-4-aminotriazole ligands coordinated to the metal ions through the triazole nitrogen atoms.The luminescent property of 1 was also studied.展开更多
The morphology of the copper iodide （CuI） film as an inorganic p-type material has an important influence on enhancing the performance of polymer solar cells （PSCs）. A self-assembled monolayer of 3-aminopropanoic ...The morphology of the copper iodide （CuI） film as an inorganic p-type material has an important influence on enhancing the performance of polymer solar cells （PSCs）. A self-assembled monolayer of 3-aminopropanoic acid （C3-SAM） was used on the surface of indium tin oxide （ITO） before depositing the CuI films. Consequently, a well-distributed and smooth CuI film was formed with pinhole free and complete surface coverage. The root mean square of the corresponding CuI film was reduced from 3.63 nm for ITO/CuI to 0.77 nm. As a result, the average power conversion efficiency （PCE） of PSCs with the device structure of ITO/C3-SAM/CuI/P3HT：PC61BM/ZnO/Al increased significantly from 2.55% （best 2.66%） to 3.04% （best 3.20%） after C3-SAM treatment. This work provides an effective strategy to control the morphology of CuI films through interracial modification and promotes its application in efficient PSCs.展开更多
This paper describes a very simple, efficient synthesis of quinazolinones and chromeno[d]pyrimidinones from the reaction of aryl aldehydes, urea/thiourea and active methylene compounds（dimedone/4-hydroxycoumarin） us...This paper describes a very simple, efficient synthesis of quinazolinones and chromeno[d]pyrimidinones from the reaction of aryl aldehydes, urea/thiourea and active methylene compounds（dimedone/4-hydroxycoumarin） using nano-sized CuI particles under solvent-free conditions. The highlights of this new method are based on using an effective and recyclable catalyst, affording high yields of products,mild reaction conditions, facile work-up and purification.展开更多
A new coordination compound, [（CuI）（Btd）]n （1, Btd = 2,1,3-benzothiadiazole）, was obtained at room temperature by the reaction of 2,1,3-benzothiadiazole with CuI and KI saturated aqueous solution. It was charact...A new coordination compound, [（CuI）（Btd）]n （1, Btd = 2,1,3-benzothiadiazole）, was obtained at room temperature by the reaction of 2,1,3-benzothiadiazole with CuI and KI saturated aqueous solution. It was characterized by elemental analysis, IR spectroscopy, single-crystal X-ray diffraction analysis and photoluminescence. The complex crystallizes in the triclinic Pi space group, with a = 4.1620（6）, b = 10.4590（15）, c = 10.5052（15） A, a = 69.310（2）, β = 83.608（2）, γ = 78.873（2）°, V = 419.30（10） A3, Z = 2, C6H4N2SCuI, Mr = 326.61, Dc = 2.587 g/cm^3, F（000） = 304 and/^（MoKa） = 6.464 mm-1. The final R = 0.0418 and wR = 0.0936 for 1451 observed reflections with 1 〉 2σ（I） and R = 0.0422 and wR = 0.0939 for all data. In the complex, the Cu atoms are coordinated by one nitrogen atom and three iodine atoms to form a double-stranded stair, and such stairs are further linked to build a 2D framework via C-H…I interactions.展开更多
A copper-catalyzed three-component reaction of alkenes,cycloketone oximes and DABCO·(SO_(2))_(2) is de-veloped,which provides a convenient route for the synthesis of diverse(E)-cyanoalkylsulfonyl alkenes in moder...A copper-catalyzed three-component reaction of alkenes,cycloketone oximes and DABCO·(SO_(2))_(2) is de-veloped,which provides a convenient route for the synthesis of diverse(E)-cyanoalkylsulfonyl alkenes in moderate to good yields with excellent regio-and stereoselectivity.A broad substrate scope with ex-cellent functional group tolerance is observed.A plausible radical pathway is proposed,which involves copper-catalyzed ring-opening C–C bond cleavage of O-acyl oxime and insertion of sulfur dioxide.During the reaction process,cyanoalkyl radical and cyanoalkylsulfonyl radical are the key intermediates.展开更多
The family of copper-based metal halides has drawn increasing attention owing to their structural flexibility and optical tunability.However,the controllable synthesis of isomers to further regulate luminescence reaso...The family of copper-based metal halides has drawn increasing attention owing to their structural flexibility and optical tunability.However,the controllable synthesis of isomers to further regulate luminescence reasonably and thoroughly understand the structure-luminescence-performance relationship remains a challenge.In this work,a pair of isomers of the hybrid copper iodide 4-BrBTP(Cu_(2)I_(4))_(0.5)(1-αand 1-β,4-BrBTP=(4-bromobenzyl)triphenylphosphonium bromide)were synthesized using the same precursors but varying the solvents and molar ratios.展开更多
Employing chiral(R/S)-4-chloro/bromo-α-methylbenzylamine(R/S-X-MBA,X=Cl,Br)as ligands,we prepare two zero-dimensional hybrid copper(I)iodide clusters,(R/S-Cl-MBA)_(4)Cu_(4)I_(4)(R/S-Cl)and(R/S-Br-MBA)_(4)Cu_(4)I_(4)(...Employing chiral(R/S)-4-chloro/bromo-α-methylbenzylamine(R/S-X-MBA,X=Cl,Br)as ligands,we prepare two zero-dimensional hybrid copper(I)iodide clusters,(R/S-Cl-MBA)_(4)Cu_(4)I_(4)(R/S-Cl)and(R/S-Br-MBA)_(4)Cu_(4)I_(4)(R/S-Br),via a simple room-temperature solvent-diffusion method.Both R/S-Cl and R/S-Br are in the C2 chiral space group with a monoclinic crystal system.Under 310 nm excitation,R/S-Cl and R/S-Br exhibit efficient orange and yellow broadband luminescence,featuring large Stokes shifts,microsecond lifetimes,and symmetric chiral CD signals.Interestingly,compared to R/S-Cl with a photoluminescence(PL)quantum yield(QY)of~46%,a near-unity PLQY is observed for R/S-Br,along with a longer PL lifetime(~13.5μs).The high PLQY is attributed to intermolecular halogen-halogen interactions,which greatly enhance lattice rigidity and suppress nonradiative recombination of triplet excitons.Furthermore,R/S-Br has been demonstrated for X-ray scintillator application.This work offers an effective strategy for designing multifunctional and efficient chiral phosphors.展开更多
A copper antimony iodide rudorffite,Cu_(3)SbI_(6),was first prepared by using a low-temperature solution-pro-cessing approach.Its film absorbs 320-520nm fight and has an indirect bandgap of 2.43eV.Solar cells with a s...A copper antimony iodide rudorffite,Cu_(3)SbI_(6),was first prepared by using a low-temperature solution-pro-cessing approach.Its film absorbs 320-520nm fight and has an indirect bandgap of 2.43eV.Solar cells with a structure of ITO/PEDOT:PSS/CusSbIJPC6~BM/AI were made,giving a power conversion efficiency of 0.50%and a fill factor of 67.09%.展开更多
A novel and effective protocol has been developed for the Ullmann-type C--N coupling reaction catalyzed by calix[4]arene supported amino acid ionic liquid and copper（I） iodide in water under microwave irradiation co...A novel and effective protocol has been developed for the Ullmann-type C--N coupling reaction catalyzed by calix[4]arene supported amino acid ionic liquid and copper（I） iodide in water under microwave irradiation condition The protocol uses ealix[4]arene supported amino acid ionic liquid as double function of the ligand and phase-transfer catalyst, and shows good tolerance in good to excellent yields.展开更多
Chiral hybrid metal halides with high photoluminescence quantum yield(PLQY)and superior dissymmetry factor(g_(lum))are promising candidates for circularly polarized luminescence(CPL)emitting sources.However,it is a gr...Chiral hybrid metal halides with high photoluminescence quantum yield(PLQY)and superior dissymmetry factor(g_(lum))are promising candidates for circularly polarized luminescence(CPL)emitting sources.However,it is a great challenge to achieve both high g_(lum)and large PLQY.Here,we report a new supramolecular strategy to fabricate chiral hybrid Cu(Ⅰ)-halides with nearunity quantum yields and intense CPL emissions.The dissymmetry factor can be dramatically modulated by tuning the hostvip complexations.Attributing to the chirality and variable conformations of the host-vip complexes,a series of chiral[G@L^(R/S)]_(2)Cu_(4)I_(6)have been prepared.The incorporation of different cations within the chiral L^(R/S)hosts leads to variations of packing modes along the c-axis and different extent of distortions in the[Cu_(4)I_(6)]_(2)-polyhedra.Among them,[H_(3)O@L^(R/S)]+cations are stacked based on Van der Waals interactions and hierarchically self-assemble into a right/left-handed helix in[H_(3)O@L^(R/S)]_(2)Cu_(4)I_(6),which results in a high g_(lum)of-7×10^(-3)and a large PLQY of 96.92%.Notably,[G@L^(R/S)]_(2)Cu_(4)I_(6)shows promising applications in single-component white light emitting diodes(WLEDs),exhibiting a maximum dissymmetry factor of-1.2×10^(-3).The effective host-vip complexation and oriented hierarchical self-assembly provide an effective strategy for the development of high-performance CPL materials.展开更多
Three new 1,2,3-triazole-based NS ligands,2-((4-((benzylthio)methyl)-1H-1,2,3-triazol-1-yl)methyl)pyridine(L1),2-((4-(2-(cyclopentylthio)ethyl)-1H-1,2,3-triazol-1-yl)methyl)pyridine(L2)and 2-((4-(2-(cyclopentylthio)et...Three new 1,2,3-triazole-based NS ligands,2-((4-((benzylthio)methyl)-1H-1,2,3-triazol-1-yl)methyl)pyridine(L1),2-((4-(2-(cyclopentylthio)ethyl)-1H-1,2,3-triazol-1-yl)methyl)pyridine(L2)and 2-((4-(2-(cyclopentylthio)ethyl)-1H-1,2,3-triazol-1-yl)methyl)quinoline(L3)and the corresponding copper(I)-iodide complexes[Cu_(4)I_(4)(L1)_(2)](1),[Cu_(6)I_(6)(L2)_(2)](2)and[Cu_(6)I_(6)(L3)_(2)](3A)have been prepared and characterized by single-crystal X-ray diffraction(XRD),powder XRD,photoluminescence spectroscopy and thermogravimetric analysis.Complexes 1,2 and 3A exhibit stair-step[Cu_(n)I_(n)](n=4 and 6)cluster structures with supporting ligands L1,L2 and L3,respectively.Ligand L1 coordinates with a bidentate/monodentate binding mode in the[Cu_(4)I_(4)]cluster complex 1 using the pyridyl-triazole moiety and with a pendant-CH_(2)SCH_(2)Ph group.Increasing the length of the bridge from-CH_(2)-in L1 to-C_(2)H_(4)-in L2 and L3 engages the S donor and these ligands coordinate using a bidentate/monodentate/monodentate mode supporting larger[Cu_(6)I_(6)]cluster complexes 2 and 3A.A kinetic product[Cu_(8)I_(8)(L3)_(2)(CH_(3)CN)_(2)](3B)was isolated from the reaction of L3 with CuI in CH_(3)CN and the single-crystal X-ray structure indicates a rare discrete stair-step[Cu_(8)I_(8)]core supported by two L3 and two coordinated CH_(3)CN solvates.The structure is further stabilized by intermolecularπ⋯πstacking interactions in the lattice.Isolation of 1-3 provides a good demonstration of the use of multidentate and multifunctional hybrid ligands in supporting[Cu_(n)I_(n)]clusters of different sizes(n=4,6,8).Ligands L1-L3 are blue emissive molecules.The corresponding complexes display strong blue(1 and 2)or remarkable yellow(3A)emissions between 500 and 700 nm in the solid state.The structures of sulfur-containing ligands and their copper-iodide complexes are described and discussed.展开更多
As an intrinsic p-type transparent conductor with a wide band gap of 3.1 eV,γ-CuI full of potential has gradually attracted the attention of researchers.However,γ-CuI films deposited by various techniques generally ...As an intrinsic p-type transparent conductor with a wide band gap of 3.1 eV,γ-CuI full of potential has gradually attracted the attention of researchers.However,γ-CuI films deposited by various techniques generally exhibit high haze with a frosted glass-like appearance,which significantly affects the device performance.Herein,a new strategy is proposed in which true p-type CuI thin films with low haze have been successfully synthesised at room temperature.The specular transmittance of the CuI film over 85%in the visible region(400-800 nm)can be achieved.The haze of the as-preparedγ-CuI films can be as low as 0.7%.Meanwhile,the as-prepared CuI film has an FOM as high as 230 MΩ−1.This ideal stable p-type optoelectronic performance was significant among various typical p-type transparent conductive films.展开更多
文摘Poly（4-vinyl pyridine） supported nanoparticle of copper（Ⅰ） iodide is reported as a green and recyclable catalyst for the regioselective synthesis of 1,4-disubstituted-1H-1,2,3-triazoles from benzyl halides,sodium azide and terminal alkynes in water. This catalyst can be recovered by simple filtration and recycled up to 8 consecutive runs without any loss of its efficiency.
基金supported by the China Postdoctoral Science Foundation(2024M753736)Guangdong Basic Research Center of Excellence for Functional Molecular Engineering(31000-42080002).
文摘A new strategy of improving the stability of organic-inorganic hybrid materials by increasing the charge of organic compounds to enhance the strength of ionic bonds has been demonstrated.Based on this method,we have designed and synthesized a series of ionic copper iodide hybrid structures with significantly improved stability and excellent photo/radio-luminescence,showing potential as new solid-state lighting phosphors and X-ray scintillators.
基金supported by the National Natural Science Foundation of China(Nos.22475195 and 22101263)Postdoctoral Science Foundation of China(No.2024M762981)Zhengzhou University.
文摘Stimuli responsive phosphors with photoluminescence and thermoresponsive luminescence are intriguing for information encryption applications.Herein,two solvent-mediated,stimuli responsive phosphors based on phosphine-copper(I)iodide complexes 1 and 2 are reported.Complex 1 exhibited temperature-and excitation-wavelength-dependent dual-emission characteristics,displaying high energy(HE)and low energy(LE)bands with the quantum yield(QY)of 38.5%under 365 nm irradiation;but complex 2 exhibited no emission.The LE emission can be attributed to a triplet halide-to-metal charge transfer(^(3)XMCT)and copper-centered 4d→3s,3p transitions,whereas the HE emission originates from a triplet halide-to-ligand charge-transfer(^(3)XLCT).Importantly,in complex 2,the strong C—H∙∙∙Cl interaction in the supramolecular crystal lattice annihilated the sensitive cluster centered(3CC)excited state.Intriguingly,only the HE emission band of complex 2 can be successfully activated by high-energy excitation or changing the temperature.Nevertheless,the QY of complex 2 is 15.6%under 310 nm irradiation,which is smaller than that of complex 1 of 49.8%.This behavior was further confirmed by heating,where both complexes show HE emission.The reversible crystal transformation between complexes 1 and 2 was achieved.Furthermore,the reversible excitation-wavelength-dependent dual-emission and thermoresponsive properties make these phosphors suitable candidates for anti-counterfeiting and information encryption applications.
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 fnancially by the National Basic Research Program of China(973 Program,No.2012CB722603)the Start-Up Foundation for Young Scientists of Shihezi University(Nos.RCZX201012,RCZX201014,RCZX201015)
文摘Tetrazole-l-acetic acid was found to serve as a superior ligand for Cul-catalyzed N-arylation of imidazoles with aryl iodides under a low catalyst loading （5 mol% of Cul）. A variety of aryl iodides could he aminated to provide the N-arylated products in good to excellent yields without the need of an inert atmosphere.
基金supported by the National Natural Science Foundation of China (20873150, 20821061, and 50772113)Chinese Academy of Sciences (KJCX2-YW-M05)+1 种基金the Natural Science Foundation of Fujian Province (2006F3135, 2006F3141, 2007HZ0001-1)the Fund of Fujian Key Laboratory of Nanomaterials (2006L2005)
文摘The title compound,[Cu4I4（C4H8N4）4],has been synthesized and characterized by single-crystal X-ray diffraction analysis.It crystallizes in monoclinic,space group Pbca,with a=18.1851（10）,b=9.3697（5）,c=19.8034（10）A,V=3374.3（3）A^3,C16H32Cu4I4N16,Mr=1210.34,Z=4,Dc=2.383 g/cm^3,μ=6.183 mm^-1,F（000）=2272,S=1.032,the final R=0.0309 and wR=0.1180 for 3854 observer reflections（I〉2σ（I））.The structure of the title compound consists of tetranuclear copper cluster units bridged by the halogen atoms with the 3,5-dimethyl-4-aminotriazole ligands coordinated to the metal ions through the triazole nitrogen atoms.The luminescent property of 1 was also studied.
基金Project supported by the National Natural Science Foundation of China(Grant Nos.61377065 and 61574064)the Science and Technology Planning Project of Guangdong Province,China(Grant Nos.2013CB040402009 and 2015B010132009)the Science and Technology Project of Guangzhou City,China(Grant No.2014J4100056)
文摘The morphology of the copper iodide （CuI） film as an inorganic p-type material has an important influence on enhancing the performance of polymer solar cells （PSCs）. A self-assembled monolayer of 3-aminopropanoic acid （C3-SAM） was used on the surface of indium tin oxide （ITO） before depositing the CuI films. Consequently, a well-distributed and smooth CuI film was formed with pinhole free and complete surface coverage. The root mean square of the corresponding CuI film was reduced from 3.63 nm for ITO/CuI to 0.77 nm. As a result, the average power conversion efficiency （PCE） of PSCs with the device structure of ITO/C3-SAM/CuI/P3HT：PC61BM/ZnO/Al increased significantly from 2.55% （best 2.66%） to 3.04% （best 3.20%） after C3-SAM treatment. This work provides an effective strategy to control the morphology of CuI films through interracial modification and promotes its application in efficient PSCs.
基金the financial support from the Research Council of East Tehran Branch, Islamic Azad University
文摘This paper describes a very simple, efficient synthesis of quinazolinones and chromeno[d]pyrimidinones from the reaction of aryl aldehydes, urea/thiourea and active methylene compounds（dimedone/4-hydroxycoumarin） using nano-sized CuI particles under solvent-free conditions. The highlights of this new method are based on using an effective and recyclable catalyst, affording high yields of products,mild reaction conditions, facile work-up and purification.
基金Supported by the National Natural Science Foundation of China (61205184)the Department of Education of Zhejiang Province (Y201122207)+1 种基金Open Foundation of Zhejiang Provincial Top Key Academic Discipline of Applied Chemistry and Eco-Dyeing & Finishing Engineering (YR2012013)the Young Researchers Foundation of Zhejiang Provincial Top Key Academic Discipline of Applied Chemistry and Eco-Dyeing & Finishing Engineering (ZYG2012003)
文摘A new coordination compound, [（CuI）（Btd）]n （1, Btd = 2,1,3-benzothiadiazole）, was obtained at room temperature by the reaction of 2,1,3-benzothiadiazole with CuI and KI saturated aqueous solution. It was characterized by elemental analysis, IR spectroscopy, single-crystal X-ray diffraction analysis and photoluminescence. The complex crystallizes in the triclinic Pi space group, with a = 4.1620（6）, b = 10.4590（15）, c = 10.5052（15） A, a = 69.310（2）, β = 83.608（2）, γ = 78.873（2）°, V = 419.30（10） A3, Z = 2, C6H4N2SCuI, Mr = 326.61, Dc = 2.587 g/cm^3, F（000） = 304 and/^（MoKa） = 6.464 mm-1. The final R = 0.0418 and wR = 0.0936 for 1451 observed reflections with 1 〉 2σ（I） and R = 0.0422 and wR = 0.0939 for all data. In the complex, the Cu atoms are coordinated by one nitrogen atom and three iodine atoms to form a double-stranded stair, and such stairs are further linked to build a 2D framework via C-H…I interactions.
基金support from the National Natural Science Foundation of China (No. 21871053)the Leading Innovative and Entrepreneur Team Introduction Program of Zhejiang (No. 2019R01005)the Open Research Fund of School of Chemistry and Chemical Engineering, Henan Normal University (No. 2020ZD04) is gratefully acknowledged
文摘A copper-catalyzed three-component reaction of alkenes,cycloketone oximes and DABCO·(SO_(2))_(2) is de-veloped,which provides a convenient route for the synthesis of diverse(E)-cyanoalkylsulfonyl alkenes in moderate to good yields with excellent regio-and stereoselectivity.A broad substrate scope with ex-cellent functional group tolerance is observed.A plausible radical pathway is proposed,which involves copper-catalyzed ring-opening C–C bond cleavage of O-acyl oxime and insertion of sulfur dioxide.During the reaction process,cyanoalkyl radical and cyanoalkylsulfonyl radical are the key intermediates.
基金supported by the National Natural Science Foundation of China(Grant No.22171040)the Guangdong Provincial Science&Technology Project(No.2023A0505050084)+2 种基金the Shenyang Young and Middle-aged Science and Technology Innovation Talent Support Program(No.RC230784)the Guangdong Basic and Applied Basic Research Foundation(No.2023A1515140011)the Fundamental Research Funds for the Central Universities,China(No.N2305017).
文摘The family of copper-based metal halides has drawn increasing attention owing to their structural flexibility and optical tunability.However,the controllable synthesis of isomers to further regulate luminescence reasonably and thoroughly understand the structure-luminescence-performance relationship remains a challenge.In this work,a pair of isomers of the hybrid copper iodide 4-BrBTP(Cu_(2)I_(4))_(0.5)(1-αand 1-β,4-BrBTP=(4-bromobenzyl)triphenylphosphonium bromide)were synthesized using the same precursors but varying the solvents and molar ratios.
基金supported by the National Natural Science Foundation of China(Grant No.22365005)the Guangxi Natural Science Foundation(2024GXNSFDA010050)+3 种基金the Central Guidance on the Local Science and Technology Development Fund of Guangxi Province(Gui Ke ZY23055001)the Guangxi Science and Technology Major Project(AA23073018)the BRICS STI Framework Programme(No.52261145703)the US NSF for financial support(CHE-2203633).
文摘Employing chiral(R/S)-4-chloro/bromo-α-methylbenzylamine(R/S-X-MBA,X=Cl,Br)as ligands,we prepare two zero-dimensional hybrid copper(I)iodide clusters,(R/S-Cl-MBA)_(4)Cu_(4)I_(4)(R/S-Cl)and(R/S-Br-MBA)_(4)Cu_(4)I_(4)(R/S-Br),via a simple room-temperature solvent-diffusion method.Both R/S-Cl and R/S-Br are in the C2 chiral space group with a monoclinic crystal system.Under 310 nm excitation,R/S-Cl and R/S-Br exhibit efficient orange and yellow broadband luminescence,featuring large Stokes shifts,microsecond lifetimes,and symmetric chiral CD signals.Interestingly,compared to R/S-Cl with a photoluminescence(PL)quantum yield(QY)of~46%,a near-unity PLQY is observed for R/S-Br,along with a longer PL lifetime(~13.5μs).The high PLQY is attributed to intermolecular halogen-halogen interactions,which greatly enhance lattice rigidity and suppress nonradiative recombination of triplet excitons.Furthermore,R/S-Br has been demonstrated for X-ray scintillator application.This work offers an effective strategy for designing multifunctional and efficient chiral phosphors.
基金the National Natural Science Foundation of China(U1401244,51773045,21572041,21772030,51503050 and 21704021)the National Key Research and Development Program of China(2017YFA0206600)for financial support
文摘A copper antimony iodide rudorffite,Cu_(3)SbI_(6),was first prepared by using a low-temperature solution-pro-cessing approach.Its film absorbs 320-520nm fight and has an indirect bandgap of 2.43eV.Solar cells with a structure of ITO/PEDOT:PSS/CusSbIJPC6~BM/AI were made,giving a power conversion efficiency of 0.50%and a fill factor of 67.09%.
基金We gratefully acknowledge financial support from the National Natural Science Foundation of China （No. 21176222）.
文摘A novel and effective protocol has been developed for the Ullmann-type C--N coupling reaction catalyzed by calix[4]arene supported amino acid ionic liquid and copper（I） iodide in water under microwave irradiation condition The protocol uses ealix[4]arene supported amino acid ionic liquid as double function of the ligand and phase-transfer catalyst, and shows good tolerance in good to excellent yields.
基金supported by the Science Foundation of Fujian Province(2021J02016,2023J01528)the National Natural Science Foundation of China(21901245,22171264)。
文摘Chiral hybrid metal halides with high photoluminescence quantum yield(PLQY)and superior dissymmetry factor(g_(lum))are promising candidates for circularly polarized luminescence(CPL)emitting sources.However,it is a great challenge to achieve both high g_(lum)and large PLQY.Here,we report a new supramolecular strategy to fabricate chiral hybrid Cu(Ⅰ)-halides with nearunity quantum yields and intense CPL emissions.The dissymmetry factor can be dramatically modulated by tuning the hostvip complexations.Attributing to the chirality and variable conformations of the host-vip complexes,a series of chiral[G@L^(R/S)]_(2)Cu_(4)I_(6)have been prepared.The incorporation of different cations within the chiral L^(R/S)hosts leads to variations of packing modes along the c-axis and different extent of distortions in the[Cu_(4)I_(6)]_(2)-polyhedra.Among them,[H_(3)O@L^(R/S)]+cations are stacked based on Van der Waals interactions and hierarchically self-assemble into a right/left-handed helix in[H_(3)O@L^(R/S)]_(2)Cu_(4)I_(6),which results in a high g_(lum)of-7×10^(-3)and a large PLQY of 96.92%.Notably,[G@L^(R/S)]_(2)Cu_(4)I_(6)shows promising applications in single-component white light emitting diodes(WLEDs),exhibiting a maximum dissymmetry factor of-1.2×10^(-3).The effective host-vip complexation and oriented hierarchical self-assembly provide an effective strategy for the development of high-performance CPL materials.
基金financial support(IMRE/12-1P0907,IMRE/14-1C0248&IMRE/15-1C0202)provided by the Institute of Materials Research and Engineering,A*STARthe National University of Singapore.
文摘Three new 1,2,3-triazole-based NS ligands,2-((4-((benzylthio)methyl)-1H-1,2,3-triazol-1-yl)methyl)pyridine(L1),2-((4-(2-(cyclopentylthio)ethyl)-1H-1,2,3-triazol-1-yl)methyl)pyridine(L2)and 2-((4-(2-(cyclopentylthio)ethyl)-1H-1,2,3-triazol-1-yl)methyl)quinoline(L3)and the corresponding copper(I)-iodide complexes[Cu_(4)I_(4)(L1)_(2)](1),[Cu_(6)I_(6)(L2)_(2)](2)and[Cu_(6)I_(6)(L3)_(2)](3A)have been prepared and characterized by single-crystal X-ray diffraction(XRD),powder XRD,photoluminescence spectroscopy and thermogravimetric analysis.Complexes 1,2 and 3A exhibit stair-step[Cu_(n)I_(n)](n=4 and 6)cluster structures with supporting ligands L1,L2 and L3,respectively.Ligand L1 coordinates with a bidentate/monodentate binding mode in the[Cu_(4)I_(4)]cluster complex 1 using the pyridyl-triazole moiety and with a pendant-CH_(2)SCH_(2)Ph group.Increasing the length of the bridge from-CH_(2)-in L1 to-C_(2)H_(4)-in L2 and L3 engages the S donor and these ligands coordinate using a bidentate/monodentate/monodentate mode supporting larger[Cu_(6)I_(6)]cluster complexes 2 and 3A.A kinetic product[Cu_(8)I_(8)(L3)_(2)(CH_(3)CN)_(2)](3B)was isolated from the reaction of L3 with CuI in CH_(3)CN and the single-crystal X-ray structure indicates a rare discrete stair-step[Cu_(8)I_(8)]core supported by two L3 and two coordinated CH_(3)CN solvates.The structure is further stabilized by intermolecularπ⋯πstacking interactions in the lattice.Isolation of 1-3 provides a good demonstration of the use of multidentate and multifunctional hybrid ligands in supporting[Cu_(n)I_(n)]clusters of different sizes(n=4,6,8).Ligands L1-L3 are blue emissive molecules.The corresponding complexes display strong blue(1 and 2)or remarkable yellow(3A)emissions between 500 and 700 nm in the solid state.The structures of sulfur-containing ligands and their copper-iodide complexes are described and discussed.
基金the National Natural Science Foundation of China(No.62004117)National Key R&D Program of China(2023YFB3812700,2022YFB3706600)。
文摘As an intrinsic p-type transparent conductor with a wide band gap of 3.1 eV,γ-CuI full of potential has gradually attracted the attention of researchers.However,γ-CuI films deposited by various techniques generally exhibit high haze with a frosted glass-like appearance,which significantly affects the device performance.Herein,a new strategy is proposed in which true p-type CuI thin films with low haze have been successfully synthesised at room temperature.The specular transmittance of the CuI film over 85%in the visible region(400-800 nm)can be achieved.The haze of the as-preparedγ-CuI films can be as low as 0.7%.Meanwhile,the as-prepared CuI film has an FOM as high as 230 MΩ−1.This ideal stable p-type optoelectronic performance was significant among various typical p-type transparent conductive films.
