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

Paper ID Volume ID Publish Year Pages File Format Full-Text
28650 44084 2008 6 PDF Available
Title
Interaction of water-soluble thiol capped CdTe quantum dots and bovine serum albumin
Abstract

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.

Keywords
Quantum Dots; Bovine serum albumin; Cysteine; Thioglycolic acid; Mercaptopropionic acid; Cadmium tellurium
First Page Preview
Interaction of water-soluble thiol capped CdTe quantum dots and bovine serum albumin
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 198, Issue 1, 5 July 2008, Pages 7–12
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering