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Proceedings Paper

Quenching of the luminescence of nanomarkers bound to proteins by heavy metals
Author(s): Julia Konyukhova; Andrei Melnikov; Gennadiy Melnikov; Ekaterina Naumova; Alexander Skaptsov; Elena Volkova; Vyacheslav Kochubey
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Paper Abstract

The effect of heavy metal ions on the fluorescence of semiconductor ZnCdS nanoparticles in albumin solution was studied. It was found that the fluorescence intensity of ZnCdS nanoparticles depends on the albumin concentration in the solution. Interacting with ZnCdS nanoparticles, heavy metals differently affect the fluorescence intensity of the nanoparticles. Copper ions induce fluorescence quenching, cadmium ions increases the fluorescence intensity, and zinc ions do not affect the fluorescence intensity. ZnCdS nanoparticles are most sensitive to copper ions. Albumin enhances the effect of copper ions. The results on the influence of heavy metals on the fluorescence intensity of ZnCdS nanoparticles can be used to create a selective sensor for determination of copper ions in proteins using fluorescence quenching.

Paper Details

Date Published: 30 January 2014
PDF: 6 pages
Proc. SPIE 9031, Saratov Fall Meeting 2013: Optical Technologies in Biophysics and Medicine XV; and Laser Physics and Photonics XV, 90310K (30 January 2014); doi: 10.1117/12.2051829
Show Author Affiliations
Julia Konyukhova, N.G. Chernyshevsky Saratov State Univ. (Russian Federation)
Andrei Melnikov, Yu. A. Gagarin Saratov State Technical Univ. (Russian Federation)
Gennadiy Melnikov, Yu. A. Gagarin Saratov State Technical Univ. (Russian Federation)
Ekaterina Naumova, Yu. A. Gagarin Saratov State Technical Univ. (Russian Federation)
Alexander Skaptsov, N.G. Chernyshevsky Saratov State Univ. (Russian Federation)
Elena Volkova, N.G. Chernyshevsky Saratov State Univ. (Russian Federation)
Vyacheslav Kochubey, N.G. Chernyshevsky Saratov State Univ. (Russian Federation)


Published in SPIE Proceedings Vol. 9031:
Saratov Fall Meeting 2013: Optical Technologies in Biophysics and Medicine XV; and Laser Physics and Photonics XV
Elina A. Genina; Vladimir L. Derbov; Igor Meglinski; Valery V. Tuchin, Editor(s)

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