Triplet exciton formation in a benzophenone single crystal studied by picosecond time-resolved absorption spectroscopy

被引：35

作者：

Katoh, R

Kotani, M

Hirata, Y

Okada, T

机构：

[1] GAKUSHUIN UNIV,FAC SCI,TOKYO 171,JAPAN

[2] OSAKA UNIV,FAC ENGN SCI,DEPT CHEM,TOYONAKA,OSAKA 560,JAPAN

[3] OSAKA UNIV,EXTREME MAT RES CTR,TOYONAKA,OSAKA 560,JAPAN

来源：

CHEMICAL PHYSICS LETTERS | 1997年 / 264卷 / 06期

关键词：

D O I：

10.1016/S0009-2614(96)01389-9

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 formation of triplet excitons in a benzophenone single crystal has been studied by picosecond time-resolved absorption spectroscopy. The rate constant of the singlet-triplet intersystem crossing has been determined to be (28 +/- 2 ps)(-1). With strong excitation the formation of the triplet exciton becomes faster. This is ascribed to the fission of a highly excited state, populated by a biphotonic process, into two triplet excitons.

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页码：631 / 635

页数：5

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