Transient femtosecond spectroscopy in α-sexithiophene single crystals

被引：15
|
作者：
Klein, G [1 ]
机构：
[1] Inst Phys & Chim Mat Strasbourg, Opt Nonlineaire & Optoelect Grp, F-67037 Strasbourg, France
来源：
CHEMICAL PHYSICS LETTERS | 2000年 / 320卷 / 1-2期
关键词：
D O I：
10.1016/S0009-2614(00)00199-8
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The relaxation processes of excited states in alpha-sexithiophene single crystals have been investigated by femtosecond transient spectroscopy experiments. A vibrational relaxation has been observed during the first 500 fs, leading to the bottom of the lowest Davydov exciton band. Excitons evolve slowly on a subnanosecond scale by bimolecular annihilations to the ground state and by intersystem crossing to triplet states. There is no evidence for the creation of ionized 6T(+) states. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：65 / 69
页数：5
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