Photoinduced excimer generation in perylene diimide dimer:effects of solvent polarity[Invited]  

作　　者：Guangliu Ran Hang Wang Yujing Song Yahui Liu Zhishan Bo Wenkai Zhang 冉光柳;汪航;宋宇菁;刘亚辉;薄志山;张文凯(Department of Physics and Applied Optics Beijing Area Major Laboratory,Center for Advanced Quantum Studies,Beijing Normal University,Beijing 100875,China;College of Textiles&Clothing,Qingdao University,Qingdao 266071,China;Beijing Key Laboratory of Energy Conversion and Storage Materials,College of Chemistry,Beijing Normal University,Beijing 100875,China)

机构地区：[1]Department of Physics and Applied Optics Beijing Area Major Laboratory,Center for Advanced Quantum Studies,Beijing Normal University,Beijing 100875,China [2]College of Textiles&Clothing,Qingdao University,Qingdao 266071,China [3]Beijing Key Laboratory of Energy Conversion and Storage Materials,College of Chemistry,Beijing Normal University,Beijing 100875,China

出　　处：《Chinese Optics Letters》2022年第10期49-54,共6页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.U2032112).

摘　　要：The aggregation and photoinduced excited state dynamics of organic π-conjugated molecules play a vital role in solar energy conversion and applications.This work investigates how solvent polarity affects the aggregation behavior and the photophysical process of perylene diimide dimer(PDI-II).The results show that the conjugations between PDI intramolecular chromophores are more likely to generate excimer,and the conjugations between PDI intermolecular chromophores are more likely to experience symmetry-breaking charge separation.Our study can provide a reference for the design of high-efficiency solar energy conversion materials.

关 键 词：EXCIMER perylene diimide DIMER solvent effect transient absorption spectroscopy 

分 类 号：TB34[一般工业技术—材料科学与工程]