Steady and transient behavior of perylene under high pressure  

作　　者：Ting-Ting Wang Yu Zhang Hong-Yu Tu Lu Han Ji-Chao Cheng Xin Wang Fang-Fei Li Ling-Yun Pan Tian Cui 王亭亭;张宇;屠宏宇;韩露;程基超;王鑫;李芳菲;潘凌云;崔田(State Key Laboratory of Superhard Materials,College of Physics,Jilin University,Changchun 130012,China;School of Physical Science and Technology,Ningbo University,Ningbo 315211,China)

机构地区：[1]State Key Laboratory of Superhard Materials,College of Physics,Jilin University,Changchun 130012,China [2]School of Physical Science and Technology,Ningbo University,Ningbo 315211,China

出　　处：《Chinese Physics B》2021年第11期632-636,共5页中国物理B（英文版）

基　　金：Project supported by the National Key Research and Development Program of China(Grant Nos.2018YFA0305900 and 2017YFA0403704);the National Natural Science Foundation of China(Grant Nos.61575079,51632002,11804113,and 51720105007);the Natural Science Foundation of Jilin Province,China(Grant No.20180101230JC);the Program for Changjiang Scholars and Innovative Research Team in University,China(Grant No.IRT 15R23).

摘　　要：Pressure can reduce the distances among atoms, thereby modifying the overall optical characteristics of molecules.In this article, the excited state behavior of perylene is carefully observed under isotropic pressure and non-complexing condition. In a steady state, absorption peak shows red shift and spectral width are broadened with pressure increasing,which is ascribed to the π-electron delocalization between molecules. In a transient state, the transition dynamics presents a wavelike tendency with pressure increasing because the shift of self-tapping exciton state is contrary to that of Y-state with pressure increasing. The results conduce to understanding the influence of inter-molecule interaction on excited state behavior with inter-molecule distance decreasing, which contributes to studying the materials under extreme condition.

关 键 词：PERYLENE high-pressure ultrafast spectroscopy 

分 类 号：O56[理学—原子与分子物理]