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Proceedings Paper

CdTe quantum dots stabilization by protein in aqueous solution
Author(s): Marija Matulionyte; Deividas Motekaitis; Vilius Poderys; Ricardas Rotomskis
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Paper Abstract

Semiconductor nanoparticles are promising fluorescent markers. However it is very little known about interaction of quantum dots with biological molecules. In this study interaction of CdTe quantum dots coated with thioglycolic acid (TGA) with bovine serum albumin was investigated. Steady state and time resolved spectroscopy and atomic force microscopy methods were used. It was explored how bovine serum albumin affects stability and spectral properties of quantum dots in aqueous media. CdTe-TGA quantum dots in aqueous solution appeared to be not stable and precipitated. Interaction with bovine serum albumin significantly enhanced stability and photoluminescence quantum yield of quantum dots and prevented from aggregating.

Paper Details

Date Published: 24 November 2010
PDF: 7 pages
Proc. SPIE 7376, Laser Applications in Life Sciences, 737603 (24 November 2010); doi: 10.1117/12.871529
Show Author Affiliations
Marija Matulionyte, Vilnius Univ. (Lithuania)
Deividas Motekaitis, Vilnius Univ. (Lithuania)
Vilius Poderys, Vilnius Univ. (Lithuania)
Ricardas Rotomskis, Vilnius Univ. (Lithuania)


Published in SPIE Proceedings Vol. 7376:
Laser Applications in Life Sciences
Matti Kinnunen; Risto Myllylä, Editor(s)

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