FEMTOSECOND TIME-RESOLVED RESONANCE RAMAN GAIN SPECTROSCOPY IN POLYDIACETYLENE

被引：91
|
作者：
YOSHIZAWA, M
HATTORI, Y
KOBAYASHI, T
机构：
[1] UNIV TOKYO,FAC SCI,DEPT PHYS,BUNKYO KU,TOKYO 113,JAPAN
[2] SUMITOMO ELECT IND,NEW CHEM R&D LABS,KONOHANA KU,OSAKA 554,JAPAN
来源：
PHYSICAL REVIEW B | 1994年 / 49卷 / 18期
关键词：
D O I：
10.1103/PhysRevB.49.13259
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Geometrical relaxation of the main chain configuration in polydiacetylene (PDA) has been investigated with time-resolved resonance Raman gain spectroscopy with 300-fs resolution. The Raman signal due to a self-trapped exciton in PDA has been observed at 1200 cm-1. The observed Raman signals offer direct evidence of the structure of a self-trapped exciton being a butatrienelike structure after geometrical relaxation from the acetylenelike structure in the free exciton state.
引用
收藏
页码：13259 / 13262
页数：4
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