Interaction of human serum albumin with CdTe quantum dots probed by optical spectroscopy methods

A. I. Savchuk; I. D. Stolyarchuk; P. M. Grygoryshyn; O. P. Antonyuk; T. A. Savchuk

doi:10.1117/12.2048905

17 December 2013 Interaction of human serum albumin with CdTe quantum dots probed by optical spectroscopy methods

A. I. Savchuk, I. D. Stolyarchuk, P. M. Grygoryshyn, O. P. Antonyuk, T. A. Savchuk

Proceedings Volume 9066, Eleventh International Conference on Correlation Optics; 906618 (2013) https://doi.org/10.1117/12.2048905
Event: Eleventh International Conference on Correlation Optics, 2013, Chernivsti, Ukraine

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.

Citation Download Citation

A. I. Savchuk, I. D. Stolyarchuk, P. M. Grygoryshyn, O. P. Antonyuk, and T. A. Savchuk "Interaction of human serum albumin with CdTe quantum dots probed by optical spectroscopy methods", Proc. SPIE 9066, Eleventh International Conference on Correlation Optics, 906618 (17 December 2013); https://doi.org/10.1117/12.2048905

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