Interaction of water-soluble thiol capped CdTe quantum dots and bovine serum albumin

被引：125

作者：

Idowu, Mopelola ^{[1
]}

Lamprecht, Emmanuel ^{[1
]}

Nyokong, Tebello ^{[1
]}

机构：

[1] Rhodes Univ, Dept Chem, ZA-6140 Grahamstown, South Africa

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2008年 / 198卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

quantum dots; bovine serum albumin; cysteine; thioglycolic acid; mercaptopropionic acid; cadmium tellurium;

D O I：

10.1016/j.jphotochem.2008.02.008

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：

Luminescent water-soluble CdTe quantum dots (QDs) capped with different thiol carboxylic acids were synthesized in aqueous medium and then cross linked to bovine serum albumin (BSA) with 1-ethyl-3-(3 -dimethylaminopropyl) carbodiimide hydrochloride (EDC). Enhancement Of fluorescence emission intensity occurred for QDs in the presence of bovine serum albumin (BSA, mixed or linked) signifying inhibition of non-radiative recombination of the surface vacancies. Fluorescence studies reveal a positive deviation behaviour suggesting the occurrence of static and dynamic mechanisms of quenching together which was accounted for by the modified Stern-Volmer equation. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：7 / 12

页数：6

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