Dynamics of a photo-excited state in polydiacetylene studied by femtosecond mid-infrared absorption spectroscopy

被引：3
|
作者：
Sugita, A [1 ]
Kobayashi, T [1 ]
机构：
[1] Univ Tokyo, Sch Sci, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan
来源：
CHEMICAL PHYSICS LETTERS | 2001年 / 346卷 / 1-2期
基金：
日本学术振兴会;
关键词：
D O I：
10.1016/S0009-2614(01)00946-0
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：
Relaxation dynamics of polydiacetylene was investigated with femtosecond time-resolved absorption spectroscopy between 1120 and 1280 cm(-1). A new photo-induced IR band was found at 1225 cm(-1) just after photo-excitation, and it disappeared with a decay time constant of 4.1 +/- 0.7 ps. This IR band is assigned to the vibrational mode which induces self-trapping of the 1B(1u) exciton. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：41 / 46
页数：6
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