Main observation and conclusion Fluorescent intelligent materials have attracted wide attention because of their great potential applications.One major hurdle for the development and application of fluorescent intelli...Main observation and conclusion Fluorescent intelligent materials have attracted wide attention because of their great potential applications.One major hurdle for the development and application of fluorescent intelligent materials is the aggregation-caused quenching effect in the solid state.Herein,tetraphenylethylene-based trithiocarbonate polymers with satisfactory molecular weights(Mw up to 24900)were synthesized through a one-pot polymerization route under mild conditions.The polymers were non-emissive due to the quenching effect of the trithiocarbonate group.However,upon UV irradiation,the polymers degraded and strong emission from the tetraphenylethylene unit was observed.Such a unique property endows them with great potential applications,such as photopatterning,anti-counterfeit labels,and UV detection.展开更多
White light,which contains polychromic visible components,affects the rhythm of organisms and has the potential for advanced applications of lighting,display,and communication.Compared with traditional incandescent bu...White light,which contains polychromic visible components,affects the rhythm of organisms and has the potential for advanced applications of lighting,display,and communication.Compared with traditional incandescent bulbs and inorganic diodes,pure organic materials are superior in terms of better compatibility,flexibility,structural diversity,and environmental friendliness.In the past few years,polychromic emission has been obtained based on organic aggregates,which provides a platform to achieve white-light emission.Several white-light emitters are sporadically reported,but the underlying mechanistic picture is still not fully established.Based on these considerations,we will focus on the single-component and multicomponent strategies to achieve efficient white-light emission from pure organic aggregates.Thereinto,single-component strategy is introduced from four parts:dual fluorescence,fluorescence and phosphorescence,dual phosphorescence with anti-Kasha’s behavior,and clusteroluminescence.Meanwhile,doping,supramolecular assembly,and cocrystallization are summarized as strategies for multicomponent systems.Beyond the construction strategies of white-light emitters,their advanced representative applications,such as organic light-emitting diodes,white luminescent dyes,circularly polarized luminescence,and encryption,are also prospected.It is expected that this review will draw a comprehensive picture of white-light emission from organic aggregates as well as their emerging applications.展开更多
基金support from the National Natural Science Foundation of China(No.21788102)the Research Grants Council of Hong Kong(Nos.16305618,16304819 and C6014-2000)+2 种基金the Innovation and Technology Commission(No.ITC-CNERC14SC01)the Science and Technology Plan of Shenzhen(Nos.JCYJ20160229205601482 and JCY20170818113602462)the National Science Foundation of Guangdong Province(No,2019B121205002).
文摘Main observation and conclusion Fluorescent intelligent materials have attracted wide attention because of their great potential applications.One major hurdle for the development and application of fluorescent intelligent materials is the aggregation-caused quenching effect in the solid state.Herein,tetraphenylethylene-based trithiocarbonate polymers with satisfactory molecular weights(Mw up to 24900)were synthesized through a one-pot polymerization route under mild conditions.The polymers were non-emissive due to the quenching effect of the trithiocarbonate group.However,upon UV irradiation,the polymers degraded and strong emission from the tetraphenylethylene unit was observed.Such a unique property endows them with great potential applications,such as photopatterning,anti-counterfeit labels,and UV detection.
基金partially supported by the National Natural Science Foundation of China (21788102)the Research Grants Council of Hong Kong (16305518, 16307020, C6014-20W, C6009-17G, and 16305618)+3 种基金the Innovation and Technology Commission (ITC-CNERC14SC01)the Natural Science Foundation of Guangdong Province (2019B121205002)the support from the Fundamental Research Funds for the Central Universities (2021QNA4032)the Open Fund of Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, and the South China University of Technology (2019B030301003)
文摘White light,which contains polychromic visible components,affects the rhythm of organisms and has the potential for advanced applications of lighting,display,and communication.Compared with traditional incandescent bulbs and inorganic diodes,pure organic materials are superior in terms of better compatibility,flexibility,structural diversity,and environmental friendliness.In the past few years,polychromic emission has been obtained based on organic aggregates,which provides a platform to achieve white-light emission.Several white-light emitters are sporadically reported,but the underlying mechanistic picture is still not fully established.Based on these considerations,we will focus on the single-component and multicomponent strategies to achieve efficient white-light emission from pure organic aggregates.Thereinto,single-component strategy is introduced from four parts:dual fluorescence,fluorescence and phosphorescence,dual phosphorescence with anti-Kasha’s behavior,and clusteroluminescence.Meanwhile,doping,supramolecular assembly,and cocrystallization are summarized as strategies for multicomponent systems.Beyond the construction strategies of white-light emitters,their advanced representative applications,such as organic light-emitting diodes,white luminescent dyes,circularly polarized luminescence,and encryption,are also prospected.It is expected that this review will draw a comprehensive picture of white-light emission from organic aggregates as well as their emerging applications.
