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Proceedings Paper

Interaction of human serum albumin with CdTe quantum dots probed by optical spectroscopy methods
Author(s): A. I. Savchuk; I. D. Stolyarchuk; P. M. Grygoryshyn; O. P. Antonyuk; T. A. Savchuk
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Paper Abstract

In this work, colloidal CdTe nanoparticles were synthesized by using thioglycolic acid (TGA) as passivator. In the absorption spectra of the colloidal CdTe nanoparticles exciton band was found to be shifted to higher photon energy as compared with bulk crystals due to quantum confinement effect. It was shown that addition of human serum albumin (HSA) to colloidal CdTe nanoparticles led to a gradual decrease of absorption and broadening of exciton structure. However, energy position of the exciton band in this case remains not shifted. In photoluminescence spectra of solution CdTe quantum dots and HSA so-called quenching effect has been observed. The quenching of HSA fluorescence intensity by semiconductor nanoparticles was analysed in framework of the formation of quantum dots-HSA protein complex.

Paper Details

Date Published: 17 December 2013
PDF: 6 pages
Proc. SPIE 9066, Eleventh International Conference on Correlation Optics, 906618 (17 December 2013); doi: 10.1117/12.2048905
Show Author Affiliations
A. I. Savchuk, Yuriy Fedkovych Chernivtsi National Univ. (Ukraine)
I. D. Stolyarchuk, Yuriy Fedkovych Chernivtsi National Univ. (Ukraine)
P. M. Grygoryshyn, Bukovinian State Medical Univ. (Ukraine)
O. P. Antonyuk, Bukovinian State Medical Univ. (Ukraine)
T. A. Savchuk, Yuriy Fedkovych Chernivtsi National Univ. (Ukraine)


Published in SPIE Proceedings Vol. 9066:
Eleventh International Conference on Correlation Optics
Oleg Vyacheslavovich Angelsky, Editor(s)

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