Luminescence quenching by heavy metal ions of probes based on anthracene, pyrene, and eosin in human serum albumin

被引：5
作者：
Naumova, E. V. [1 ]
Melnikov, A. G. [1 ]
Melnikov, G. V. [1 ]
机构：
[1] Gagarin Saratov State Tech Univ, Saratov 410054, Russia
来源：
JOURNAL OF APPLIED SPECTROSCOPY | 2013年 / 80卷 / 02期
基金：
俄罗斯基础研究基金会;
关键词：
fluorescence; phosphorescence; polar and non-polar luminescent probes; human serum albumin; pulse spectrofluorimeter; FLUORESCENCE;
D O I：
10.1007/s10812-013-9739-y
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
Fluorescence and phosphorescence quenching processes of polar and non-polar luminescent probes associated with human serum albumin (HSA) in phosphate buffer at pH 7.4 were studied. Stern-Volmer quenching constants of anthracene and pyrene fluorescence and eosin phosphorescence and rate constants for quenching of eosin triplet states were determined. The polarity index of pyrene bound to HSA was obtained as a function of thallium nitrate concentration. The influences of structural changes in the proteins that were stimulated by heavy-metal salts and of screening of protein charges by salt ions on quenching processes of singlet and triplet states of the probes were found.
引用
收藏
页码：159 / 163
页数：5
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