Polymer LB films containing photofuntional groups were prepared by the copolymerization of N-dodecylacrylamide (DDA), which has an excellent property to form a stable monolayer and LB multilayerswith photofunctional m...Polymer LB films containing photofuntional groups were prepared by the copolymerization of N-dodecylacrylamide (DDA), which has an excellent property to form a stable monolayer and LB multilayerswith photofunctional monomers. Tris(2, 2'-bipyridine) ruthenium complex, Ru(bpy)_3^(2+), one of the most well-known redox-active sensitizer, was incorporated into the DDA copolymer. The photogalvanic effect based onthe photoinduced electron transfer using the ruthenium complex in the polymer LB monolayer was discussed.展开更多
4,4-Difluoro-4-bora-3a,4a-diaza-sindacene (BODIPY) is a sort of photofunctional dye which possesses advantages including strong light-capturing property, high photon-resistance, etc. Meso-N substituted aza-BODIPY is a...4,4-Difluoro-4-bora-3a,4a-diaza-sindacene (BODIPY) is a sort of photofunctional dye which possesses advantages including strong light-capturing property, high photon-resistance, etc. Meso-N substituted aza-BODIPY is a crucial derivative of BODIPY scaffold that has the favorable optical properties and a significant spectral redshift. The photophysical properties can be tuned by molecular design, and the attenuation path of the excited state energy release of absorbed light energy can be well controlled via structural modifications, enabling tailored application. It has been extensively employed in life medicine fields including fluorescence imaging diagnosis, photodynamic therapy photosensitizer and photothermal therapy reagent and so forth. Extensive research and review have been performed in these areas. However, BODIPYs/aza-BODIPYs have a significant role in energy, catalysis, optoelectronics, photo-responsive materials and other fields. Nevertheless, there are relatively few studies and reviews in these fields on the modification and application based on BODIPY/aza-BODIPY scaffold. Herein, in this review we summarized the application of BODIPY/aza-BODIPY in the aforementioned fields, with the molecular regulation of dye as the foundation and the utilization in the above fields as the objective, in the intention of providing inspiration for the exploration of innovative BODIPY/aza-BODIPY research in the field of light resource conversion and functional materials.展开更多
By virtue of their rich photophysical and photochemical properties,transition metal complexes(TMCs)have been extensively studied in multidisciplinary research.In this review,recent studies on TMCs for biological appli...By virtue of their rich photophysical and photochemical properties,transition metal complexes(TMCs)have been extensively studied in multidisciplinary research.In this review,recent studies on TMCs for biological applications are described with a focus on the behaviour of TMCs as specific intracellular sensors and organelle-targeting imaging reagents.Some prominent examples of TMCs as photosensitisers for in vitro and in vivo phototherapies,such as photodynamic therapy and photoactivated chemotherapy,are highlighted.Also,future development of TMCs for new diagnostic and therapeutic applications is discussed.展开更多
Information recording on paper has always been the most important approach to keep records of human activity and to spread civilization.With the progress of science and technology,paper with different functions should...Information recording on paper has always been the most important approach to keep records of human activity and to spread civilization.With the progress of science and technology,paper with different functions should be exploited to conform to the increasing demands in various scenarios.In one aspect,traditional paper can only be used once,and using large amounts of paper causes deforestation,additional solid waste treatment,environmental pollution,and high energy consumption.Consequently,the development of rewritable paper that is environment-friendly,low cost,and can save resources is significant for green printing.In the other aspect,information leakage brings security issues,which may lead to severe consequences,such as war outbreak,economic loss,social problems,and so on.Therefore,the development of security printing has also attracted wide interests.Stimuli-responsive photofunctional materials that have reversible variations in absorption or emission in response to changes in the external environmental have a great potential for the achievement of green and security printing.To date,much progress has been made in these research areas.This paper lists different smart materials that respond to various external stimuli,such as light,water,pH,heat,and metal ions,and summarizes the recent advances towards green and security printing.Also,we discuss the current challenges and future directions in this rapidly growing research field.It is expected that this review article will stimulate and guide future studies for the advanced green and security printing.展开更多
The inclusion complex formation of α-CD, β-CD, and γ-CD with various water-soluble polymers has beeninvestigated, and the relationship between the chain cross-sectional areas of the polymers and the diameters of th...The inclusion complex formation of α-CD, β-CD, and γ-CD with various water-soluble polymers has beeninvestigated, and the relationship between the chain cross-sectional areas of the polymers and the diameters of the cavities ofcyclodextrins (molecular recognition) was found. Polyrotaxanes and tubular polymers were prepared on the basis ofmolecular recognition. Several kinds of polymers having tetraphenylporphyrin (TPP) and paramagnetic metallotetraphenyl-porphyrin (AgTPP, CuTPP, VOTPP or ZnTPP) have been prepared by radical polymerization of the correspondingmonomers. Visible spectra of these polymers show hypochromism in the Sorer bands of TPP moieties as compared withthose of monomers. Polymer effects were observed in the magnetic behavior and oxygen adsorption of paramagneticmetallotetraphenylporphyrin moieties. Moreover, polymer effects on photophysical and photochemical behavior were foundin the amphiphilic polymers covalently tethered with small amounts of zinc(Ⅱ)-tetraphenylporphyrin (ZnTPP).展开更多
Aggregation-induced emission(AIE)is a fascinating luminescence phenomenon that provides new ideas for developing new fluorescent devices.However,research on photofunctional complexes with AIE properties is still in it...Aggregation-induced emission(AIE)is a fascinating luminescence phenomenon that provides new ideas for developing new fluorescent devices.However,research on photofunctional complexes with AIE properties is still in its infancy,mainly because the motion of the AIE molecules that can move freely will be greatly restricted after immobilization in the complex.Therefore,extending the AIE properties of organic molecules to their constructed complexes has been difficult.展开更多
Dendrimers are well-defined tree-like macromolecules possessing numerous chain ends emanating from a single core, which makes them attractive candidates for mimicking light-harvesting systems and hydrogenases. Photoin...Dendrimers are well-defined tree-like macromolecules possessing numerous chain ends emanating from a single core, which makes them attractive candidates for mimicking light-harvesting systems and hydrogenases. Photoinduced electron and energy transfers are main processes involved in light-harvesting and photocatalysis. In this review, the general concepts of design strategies and recent developments of photofunctional dendrimers in biomimics of light-harvesting systems and hydrogenases are discussed. The energy transfer and electron transfer processes in light-harvesting dendrimers and the effect of dendritic structures in photochemical hydrogen production are illustrated.展开更多
Thermo-responsive microcrystals exhibiting obvious emission intensity or color changes have great potentials in sensing,information encryption,and microelectronics.We report herein the binary assembly of a blue-emissi...Thermo-responsive microcrystals exhibiting obvious emission intensity or color changes have great potentials in sensing,information encryption,and microelectronics.We report herein the binary assembly of a blue-emissive iridium complex and a red-emissive ruthenium complex into homogeneously-doped or optically-heterostructured microcrystals with thermo-responsive properties.Depending on the assembly conditions,lateral or longitudinal triblock heterostructures with a microplate shape are obtained,which display distinct emission pattern changes upon heating as a result of the decreased efficiency of energy transfer.In addition,branched heterostructures are prepared by a stepwise assembly.The luminescence polarization of the homogeneously-doped binary crystals and the waveguiding property of the longitudinal triblock heterostructure are further examined.This work evidences the versatility of transition metal complexes in the assembly into various luminescent nano/micro structures with potential applications in thermo-sensing and nanophotonics.展开更多
文摘Polymer LB films containing photofuntional groups were prepared by the copolymerization of N-dodecylacrylamide (DDA), which has an excellent property to form a stable monolayer and LB multilayerswith photofunctional monomers. Tris(2, 2'-bipyridine) ruthenium complex, Ru(bpy)_3^(2+), one of the most well-known redox-active sensitizer, was incorporated into the DDA copolymer. The photogalvanic effect based onthe photoinduced electron transfer using the ruthenium complex in the polymer LB monolayer was discussed.
基金supported by the National Natural Science Foundation of China(Nos.22078201,U1908202)Liaoning&Shenyang Key Laboratory of Functional Dye and Pigment(Nos.2021JH13/10200018,21-104-0-23)。
文摘4,4-Difluoro-4-bora-3a,4a-diaza-sindacene (BODIPY) is a sort of photofunctional dye which possesses advantages including strong light-capturing property, high photon-resistance, etc. Meso-N substituted aza-BODIPY is a crucial derivative of BODIPY scaffold that has the favorable optical properties and a significant spectral redshift. The photophysical properties can be tuned by molecular design, and the attenuation path of the excited state energy release of absorbed light energy can be well controlled via structural modifications, enabling tailored application. It has been extensively employed in life medicine fields including fluorescence imaging diagnosis, photodynamic therapy photosensitizer and photothermal therapy reagent and so forth. Extensive research and review have been performed in these areas. However, BODIPYs/aza-BODIPYs have a significant role in energy, catalysis, optoelectronics, photo-responsive materials and other fields. Nevertheless, there are relatively few studies and reviews in these fields on the modification and application based on BODIPY/aza-BODIPY scaffold. Herein, in this review we summarized the application of BODIPY/aza-BODIPY in the aforementioned fields, with the molecular regulation of dye as the foundation and the utilization in the above fields as the objective, in the intention of providing inspiration for the exploration of innovative BODIPY/aza-BODIPY research in the field of light resource conversion and functional materials.
基金funding support from the Hong Kong Research Grants Council(Project No.CityU 11300017,CityU 11300318,CityU 11300019,CityU 11302820 and T42-103/16-N)“Laboratory for Synthetic Chemistry and Chemical Biology”under the Health@InnoHK Program launched by Innovation and Technology Commission,The Government of Hong Kong Special Administrative Region of the People’s Republic of China+1 种基金the receipt of a Postgraduate Studentship administered by City University of Hong Kongthe receipt of a Hong Kong PhD Fellowship administered by the Research Grants Council of Hong Kong Special Administrative Region of the People’s Republic of China.
文摘By virtue of their rich photophysical and photochemical properties,transition metal complexes(TMCs)have been extensively studied in multidisciplinary research.In this review,recent studies on TMCs for biological applications are described with a focus on the behaviour of TMCs as specific intracellular sensors and organelle-targeting imaging reagents.Some prominent examples of TMCs as photosensitisers for in vitro and in vivo phototherapies,such as photodynamic therapy and photoactivated chemotherapy,are highlighted.Also,future development of TMCs for new diagnostic and therapeutic applications is discussed.
基金National Funds for Distinguished Young Scientists,Grant/Award Number:61825503National Natural Science Foundation of China,Grant/Award Numbers:21701087,61775101Priority Academic Program Development of Jiangsu Higher Education Institutions,Grant/Award Number:YX030003。
文摘Information recording on paper has always been the most important approach to keep records of human activity and to spread civilization.With the progress of science and technology,paper with different functions should be exploited to conform to the increasing demands in various scenarios.In one aspect,traditional paper can only be used once,and using large amounts of paper causes deforestation,additional solid waste treatment,environmental pollution,and high energy consumption.Consequently,the development of rewritable paper that is environment-friendly,low cost,and can save resources is significant for green printing.In the other aspect,information leakage brings security issues,which may lead to severe consequences,such as war outbreak,economic loss,social problems,and so on.Therefore,the development of security printing has also attracted wide interests.Stimuli-responsive photofunctional materials that have reversible variations in absorption or emission in response to changes in the external environmental have a great potential for the achievement of green and security printing.To date,much progress has been made in these research areas.This paper lists different smart materials that respond to various external stimuli,such as light,water,pH,heat,and metal ions,and summarizes the recent advances towards green and security printing.Also,we discuss the current challenges and future directions in this rapidly growing research field.It is expected that this review article will stimulate and guide future studies for the advanced green and security printing.
文摘The inclusion complex formation of α-CD, β-CD, and γ-CD with various water-soluble polymers has beeninvestigated, and the relationship between the chain cross-sectional areas of the polymers and the diameters of the cavities ofcyclodextrins (molecular recognition) was found. Polyrotaxanes and tubular polymers were prepared on the basis ofmolecular recognition. Several kinds of polymers having tetraphenylporphyrin (TPP) and paramagnetic metallotetraphenyl-porphyrin (AgTPP, CuTPP, VOTPP or ZnTPP) have been prepared by radical polymerization of the correspondingmonomers. Visible spectra of these polymers show hypochromism in the Sorer bands of TPP moieties as compared withthose of monomers. Polymer effects were observed in the magnetic behavior and oxygen adsorption of paramagneticmetallotetraphenylporphyrin moieties. Moreover, polymer effects on photophysical and photochemical behavior were foundin the amphiphilic polymers covalently tethered with small amounts of zinc(Ⅱ)-tetraphenylporphyrin (ZnTPP).
基金supported by the National Natural Science Foundation of China(Project No.22061047)The Ten Thousand Talent Plans for Young Top-notch Talents of Yunnan Province(No.YNWR-QNBJ-2019-088)the Yunnan University’s Research Innovation Fund for Graduate Students(No.2021Z107).
文摘Aggregation-induced emission(AIE)is a fascinating luminescence phenomenon that provides new ideas for developing new fluorescent devices.However,research on photofunctional complexes with AIE properties is still in its infancy,mainly because the motion of the AIE molecules that can move freely will be greatly restricted after immobilization in the complex.Therefore,extending the AIE properties of organic molecules to their constructed complexes has been difficult.
基金supported by the National Basic Research Program of China(2013CB834703,2013CB834505)the National Natural Science Foundation of China(21173245,21273258,21233011,21472201,21302196)
文摘Dendrimers are well-defined tree-like macromolecules possessing numerous chain ends emanating from a single core, which makes them attractive candidates for mimicking light-harvesting systems and hydrogenases. Photoinduced electron and energy transfers are main processes involved in light-harvesting and photocatalysis. In this review, the general concepts of design strategies and recent developments of photofunctional dendrimers in biomimics of light-harvesting systems and hydrogenases are discussed. The energy transfer and electron transfer processes in light-harvesting dendrimers and the effect of dendritic structures in photochemical hydrogen production are illustrated.
基金the National Key R&D Program of China(No.2023YFE0125200)National Natural Science Foundation of China(Nos.21925112 and 22090021)for funding support.
文摘Thermo-responsive microcrystals exhibiting obvious emission intensity or color changes have great potentials in sensing,information encryption,and microelectronics.We report herein the binary assembly of a blue-emissive iridium complex and a red-emissive ruthenium complex into homogeneously-doped or optically-heterostructured microcrystals with thermo-responsive properties.Depending on the assembly conditions,lateral or longitudinal triblock heterostructures with a microplate shape are obtained,which display distinct emission pattern changes upon heating as a result of the decreased efficiency of energy transfer.In addition,branched heterostructures are prepared by a stepwise assembly.The luminescence polarization of the homogeneously-doped binary crystals and the waveguiding property of the longitudinal triblock heterostructure are further examined.This work evidences the versatility of transition metal complexes in the assembly into various luminescent nano/micro structures with potential applications in thermo-sensing and nanophotonics.
