EXCITON TRANSITION ENERGY AND TEMPERATURE-DEPENDENCE OF ULTRAFAST RELAXATION OF SELF-TRAPPED EXCITONS IN POLYDIACETYLENES

被引：35

作者：

YOSHIZAWA, M ^{[1
]}

NISHIYAMA, K ^{[1
]}

FUJIHIRA, M ^{[1
]}

KOBAYASHI, T ^{[1
]}

机构：

[1] TOKYO INST TECHNOL, DEPT BIOMOLEC ENGN, MIDORI KU, YOKOHAMA, KANAGAWA 227, JAPAN

来源：

CHEMICAL PHYSICS LETTERS | 1993年 / 207卷 / 4-6期

关键词：

D O I：

10.1016/0009-2614(93)89030-L

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：

Exciton transition energies and temperature dependence of ultrafast relaxation processes have been investigated in polydiacetylene (PDA-(12,8)) Langmuir-Blodgett films with several exciton transition energies using femtosecond absorption spectroscopy. The relaxation from self-trapped exciton to the ground state in PDA with 1.88 eV exciton energy is faster than that relaxation in PDA with larger exciton energy. The decay kinetics in PDAs can be explained in terms of tunneling in the configuration space from the self-trapped exciton to the ground state.

引用

页码：461 / 467

页数：7

共 27 条

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