Time-resolved spectroscopic study of phosphorescence and delayed fluorescence of dyes in silica-gel glasses

被引：48

作者：

Lam, SK ^{[1
]}

Lo, D ^{[1
]}

机构：

[1] Chinese Univ Hong Kong, Dept Phys, Shatin, New Territories, Hong Kong

来源：

CHEMICAL PHYSICS LETTERS | 1997年 / 281卷 / 1-3期

关键词：

D O I：

10.1016/S0009-2614(97)01172-X

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：

Time-resolved spectroscopy was performed to study the lowest tripler state lifetimes of erythrosin B, eosin Y and fluorescein trapped in silica-gel glasses. Room temperature phosphorescence (RTP) and delayed fluorescence (DF) were observed for erythrosin B and eosin Y. Only delayed fluorescence was observed for fluorescein. The decay lifetimes of RTP and DF were measured. The singlet-triplet intersystem crossing rate was determined. For comparison, spectroscopic measurements were also made of erythrosin B, eosin Y in gelatin, and fluorescein in boric acid. The intensity dependence of singlet-singlet absorption of organic dye molecules in sol-gel silica was studied. (C) 1997 Elsevier Science B.V.

引用

页码：35 / 43

页数：9

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