NEW EXPERIMENTAL-METHOD FOR DETERMINING THE S(1)-]S(N) ABSORPTION-SPECTRUM OF HIGHLY FLUORESCENT DYES

被引:8
作者
GAZEAU, MC
WINTGENS, V
VALAT, P
KOSSANYI, J
DOIZI, D
SALVETAT, G
JARAUDIAS, J
机构
[1] CNRS,UPR 241,MAT MOLEC LAB,2 A 8 RUE H DUNANT,F-94320 THIAIS,FRANCE
[2] CEA,DPE,SOL,F-91191 GIF SUR YVETTE,FRANCE
关键词
D O I
10.1139/p93-009
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A new method has been developed to measure the excited-state absorption cross sections sigma1n of highly fluorescent dyes, which gives excited singlet-state absorption (ESSA) spectra over most of the UV-visible region, including the one where the fluorescence occurs. The error in the sigma1n values depends on that for the singlet excited-state concentration. Our method used benzophenone as an actinometer to determine the excited-state concentration. Rhodamine 6G was used to test the method; the ESSA spectrum obtained shows a maximum around 530 nm with an excited-state absorption cross section sigma1n value of 2.08 x 10(-16) cm2. Our results are discussed and compared with those reported in the literature.
引用
收藏
页码:59 / 65
页数:7
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