Excited-State Dynamics in an α-Perylene Single Crystal: Two-Photon- and Consecutive Two-Quantum-Induced Singlet Fission
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- 作者：Lin Ma ; Ke Jie Tan ; Hui Jiang ; Christian Kloc ; Maria-Elisabeth Michel-Beyerle ; Gagik G. Gurzadyan
- 刊名：Journal of Physical Chemistry A
- 出版年：2014
- 出版时间：February 6, 2014
- 年：2014
- 卷：118
- 期：5
- 页码：838-843
- 全文大小：342K
- ISSN：1520-5215
文摘
Excited-state dynamics in 伪-perylene single crystals is studied by time-resolved fluorescence and transient absorption techniques under different excitation conditions. The ultrafast lifetimes of the 鈥渉ot鈥?excimer (Y) state were resolved. Three competing excited-states decay channels are observed: excimer formation, dimer cation generation, and singlet fission. The singlet fission induced by two-photon and consecutive two-quantum absorption is reported for the first time in an 伪-perylene crystal.