TEMPERATURE-DEPENDENT ABSOLUTE FLUORESCENCE QUANTUM YIELD OF C-60 MULTILAYERS

被引：24

作者：

HAYNES, DR ^{[1
]}

TOKMAKOFF, A ^{[1
]}

GEORGE, SM ^{[1
]}

机构：

[1] UNIV COLORADO,DEPT CHEM & BIOCHEM,BOULDER,CO 80309

来源：

CHEMICAL PHYSICS LETTERS | 1993年 / 214卷 / 01期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0009-2614(93)85454-V

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：

Laser-induced fluorescence techniques were used to examine the fluorescence quantum yield of C60 multilayers on Al2O3 (0001) from 28 to 350 K in ultra-high vacuum. The C60 fluorescence quantum yield was q = 6.2 x 10(-4)+/-1.3 x 10(-4) at 28 K. This absolute value was determined by comparison with the known fluorescence quantum yield of 9, 10-diphenylanthracene. The C60 fluorescence quantum yield decreased progressively with increasing temperature from 28 to 350 K. The temperature-dependent changes in the quantum yield were reversible. No fluorescence was detected at surface temperatures greater than 350 K. The temperature dependence was attributed to either enhanced internal conversion or increased intersystem crossing.

引用

页码：50 / 56

页数：7

共 43 条

[1] CRYSTAL-STRUCTURE OF SOLUTION-GROWN 9,10-DIPHENYLANTHRACENE - COMBINED COMPUTATIONAL AND X-RAY STUDY [J].