Excitons in confined molecular aggregates  

作　　者：Xiaozhen Chen Jiadong Zhou Zengqi Xie Yuguang Ma 

机构地区：[1]State Key Laboratory of Luminescent Materials and Devices,Institute of Polymer Optoelectronic Materials and Devices,Guangdong Basic Research Center of Excellence for Energy&Information Polymer Materials,South China University of Technology,Guangzhou,China

出　　处：《Information ＆ Functional Materials》2024年第1期68-86,共19页信息与功能材料（英文）

基　　金：State Key Lab of Luminescent Materials and Devices,South China University of Technology.;National Natural Science Foundation of China,Grant/Award Numbers:21975076,52003089,52103206,52373178;Fund of the Key Laboratory of Luminescence from Molecular Aggregates of Guangdong Province,Grant/Award Number:2019B030301003;Ministry of Science and Technology of the People's Republic of China,Grant/Award Number:2022YFA1204404;111 Project,Grant/Award Number:G2022163017L。

摘　　要：Organic optoelectronic materials have attracted extensive attention in the past decades due to their wide applications in organic light‐emitting diodes(OLEDs),organic photovoltaics(OPVs),photocatalysis,etc.Significant ad-vancements have been obtained in the material designs based on the insight into the fundamental physics of exciton related to molecular stacking patterns in solid/condensed states.The exciton characteristics and behaviors are not only a starting point for studying photophysical and photochemical processes on a microscopic level,but also a crucial point in determining the optoelec-tronic properties of macroscopic aggregates.This review summarizes the historic development of exciton models,accompanied by the discoveries of special molecular stacking patterns(H‐/J‐/X‐/M‐aggregates),and the competitive de‐excitation pathways of excitons including fluorescence,energy transfer,singlet fission,excimer formation and symmetry‐breaking charge separation in the confined aggregate structures.Additionally,it highlights the capabilities of a correlation between molecular stacking modes and exciton behaviors,which provides new insights and perspectives for optimizing exciton character and behavior through the modulation of molecular arrangement in aggregate states,thereby enhancing the performance of optoelectronic materials.

关 键 词：aggregate mode energy transfer exciton model FLUORESCENCE organic optoelectronic material 

分 类 号：O57[理学—粒子物理与原子核物理]