摘要
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.
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)
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)
