LOW-TEMPERATURE OPTICAL SPECTROSCOPY OF NATURAL PORPHYRINS

被引：2
|
作者：
DIAN, J
ADAMEC, F
AMBROZ, M
PSENCIK, J
VACHA, M
HALA, J
机构：
[1] Department of Chemical Physics, Faculty of Mathematics and Physics, Charles University, 121 16 Prague
来源：
JOURNAL OF MOLECULAR STRUCTURE | 1993年 / 293卷
关键词：
D O I：
10.1016/0022-2860(93)80043-U
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：
Low temperature hole burning excitation fluorescence spectra of a set of uroporphyrin I esters in. amorphous (chloroform) matrix are presented. The hole burning spectra were excited within the region of the 0-0 S1 --> S0 transition and measured in the temperature range 1.5 - 4.3 K. From the fluence the values of homogeneous linewidths were determined. The temperature dependence of the holewidth delta(HB) has been studied. The temperature dependence of delta(HB) follows the power law T(alpha) and coefficients alpha for uroporphyrin I esters are within the range 1.32 - 1.36, which is in good agreement with other results obtained for systems in amorphous matrices. The fluorescence lifetime values of GAMMA(hom) and zero-temperature extrapolated values are compared.
引用
收藏
页码：177 / 180
页数：4
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