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
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
Three-dimensional(3D)-printed porous Ti6Al4V implants play an important role in the reconstruction of bone defects.However,its osseointegration capacity needs to be further improved,and related methods are inadequate,...Three-dimensional(3D)-printed porous Ti6Al4V implants play an important role in the reconstruction of bone defects.However,its osseointegration capacity needs to be further improved,and related methods are inadequate,especially lacking customized surface treatment technology.Consequently,we aimed to design an omnidirectional radiator based on ultraviolet(UV)photofunctionalization for the surface treatment of 3D-printed porous Ti6Al4V implants,and studied its osseointegration promotion effects in vitro and in vivo,while elucidating related mechanisms.Following UV treatment,the porous Ti6Al4V scaffolds exhibited significantly improved hydrophilicity,cytocompatibility,and alkaline phosphatase activity,while preserving their original mechanical properties.The increased osteointegration strength was further proven using a rabbit condyle defect model in vivo,in which UV treatment exhibited a high efficiency in the osteointegration enhancement of porous Ti6Al4V scaffolds by increasing bone ingrowth(BI),the bone-implant contact ratio(BICR),and the mineralized/osteoid bone ratio.The advantages of UV treatment for 3D-printed porous Ti6Al4V implants using the omnidirectional radiator in the study were as follows:1)it can significantly improve the osseointegration capacity of porous titanium implants despite the blocking out of UV rays by the porous structure;2)it can evenly treat the surface of porous implants while preserving their original topography or other morphological features;and 3)it is an easy-to-operate low-cost process,making it worthy of wide clinical application.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
Objective： The aim of the current study was to evaluate the effect of ultraviolet（UV） photofunctionalization of dental titanium implants with exposure to the oral cavity on osseointegration in an animal model. Meth...Objective： The aim of the current study was to evaluate the effect of ultraviolet（UV） photofunctionalization of dental titanium implants with exposure to the oral cavity on osseointegration in an animal model. Methods： Forty-eight titanium implants（Camlog~？ Conelog~？ 4.3 mmx9.0 mm） were placed epicrestally into the edentulous jaws of three minipigs and implant stability was assessed by measuring the implant stability quotient（ISQ）. Prior to implantation half of the implants were photofunctionalized with intense UV-light. After three months, the implants were exposed and ISQ was measured again. After six months of implant exposure, the minipigs were sacrificed and the harvested specimens were analyzed using histomorphometric, light, and fluorescence microscopy. Main results： Forty-two of 48 implants osseointegrated. The overall mean bone-implant contact area（BIC） was（64±22）%. No significant differences were found in BIC or ISQ value（multivariate analysis of variance（MANOVA）, P〉0.05） between implants with and without exposure to UV photofunctionalization. Conclusions： No significant effects were observed on osseointegration of dental titanium implants nine months after exposure of UV photofunctionalization.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
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
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.
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The authors acknowledge the grant from the Ministry of Science and Technology of the People’s Republic of China(grant number 2016YFB1101501)Beijing Municipal Science&Technology Commission(Project Z181100001718195).Teng Zhang was supported in part by the Postdoctoral Fellowship of Peking-Tsinghua Center for Life Sciences.We also received research and financial support from the Beijing AKEC Medical Co.,Ltd.
文摘Three-dimensional(3D)-printed porous Ti6Al4V implants play an important role in the reconstruction of bone defects.However,its osseointegration capacity needs to be further improved,and related methods are inadequate,especially lacking customized surface treatment technology.Consequently,we aimed to design an omnidirectional radiator based on ultraviolet(UV)photofunctionalization for the surface treatment of 3D-printed porous Ti6Al4V implants,and studied its osseointegration promotion effects in vitro and in vivo,while elucidating related mechanisms.Following UV treatment,the porous Ti6Al4V scaffolds exhibited significantly improved hydrophilicity,cytocompatibility,and alkaline phosphatase activity,while preserving their original mechanical properties.The increased osteointegration strength was further proven using a rabbit condyle defect model in vivo,in which UV treatment exhibited a high efficiency in the osteointegration enhancement of porous Ti6Al4V scaffolds by increasing bone ingrowth(BI),the bone-implant contact ratio(BICR),and the mineralized/osteoid bone ratio.The advantages of UV treatment for 3D-printed porous Ti6Al4V implants using the omnidirectional radiator in the study were as follows:1)it can significantly improve the osseointegration capacity of porous titanium implants despite the blocking out of UV rays by the porous structure;2)it can evenly treat the surface of porous implants while preserving their original topography or other morphological features;and 3)it is an easy-to-operate low-cost process,making it worthy of wide clinical application.
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.
基金Project supported by the Camlog Foundation(No.CF 31401),Basel,Switzerland
文摘Objective： The aim of the current study was to evaluate the effect of ultraviolet（UV） photofunctionalization of dental titanium implants with exposure to the oral cavity on osseointegration in an animal model. Methods： Forty-eight titanium implants（Camlog~？ Conelog~？ 4.3 mmx9.0 mm） were placed epicrestally into the edentulous jaws of three minipigs and implant stability was assessed by measuring the implant stability quotient（ISQ）. Prior to implantation half of the implants were photofunctionalized with intense UV-light. After three months, the implants were exposed and ISQ was measured again. After six months of implant exposure, the minipigs were sacrificed and the harvested specimens were analyzed using histomorphometric, light, and fluorescence microscopy. Main results： Forty-two of 48 implants osseointegrated. The overall mean bone-implant contact area（BIC） was（64±22）%. No significant differences were found in BIC or ISQ value（multivariate analysis of variance（MANOVA）, P〉0.05） between implants with and without exposure to UV photofunctionalization. Conclusions： No significant effects were observed on osseointegration of dental titanium implants nine months after exposure of UV photofunctionalization.
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 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.
