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Proceedings Paper

Complexes of photosensitizer and CdSe/ZnS quantum dots passivated with BSA: optical properties and intracomplex energy transfer
Author(s): Vera Kuznetsova; Anna Orlova; Irina Martynenko; Evgeny Kundelev; Vladimir Maslov; Anatoly Fedorov; Alexander Baranov; Yurii Gun'ko
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Paper Abstract

Here we report our investigations of the formation conditions and photophysical properties of complexes between luminescent semiconducting nanoparticles (quantum dots, QDs) and the photosensitizer chlorin e6, which is widely used for the photodynamic therapy. In our complexes, bovine serum albumin (BSA), the most abundant protein in blood serum, was used as a linker between QDs and chlorin e6 molecules. The influence of BSA on the optical properties of Ce6 and QDs in complexes was properly examined using spectral-luminescent methods. It was found that BSA passivated QD surface and substantially QD quantum yield of luminescence was increased. In addition, BSA prevented the aggregation of chlorin e6 molecules in complexes with QDs. We demonstrated that the use of BSA as a linker allows to create functional QD-chlorin e6 complexes with effective photoexcitation energy transfer from QDs to the molecules.

Paper Details

Date Published: 27 April 2016
PDF: 8 pages
Proc. SPIE 9887, Biophotonics: Photonic Solutions for Better Health Care V, 988738 (27 April 2016); doi: 10.1117/12.2227773
Show Author Affiliations
Vera Kuznetsova, Trinity College Dublin (Ireland)
Anna Orlova, ITMO Univ. (Russian Federation)
Irina Martynenko, ITMO Univ. (Russian Federation)
Evgeny Kundelev, ITMO Univ. (Russian Federation)
Vladimir Maslov, ITMO Univ. (Russian Federation)
Anatoly Fedorov, ITMO Univ. (Russian Federation)
Alexander Baranov, ITMO Univ. (Russian Federation)
Yurii Gun'ko, Trinity College Dublin (Ireland)
ITMO Univ. (Russian Federation)

Published in SPIE Proceedings Vol. 9887:
Biophotonics: Photonic Solutions for Better Health Care V
Jürgen Popp; Valery V. Tuchin; Dennis L. Matthews; Francesco Saverio Pavone, Editor(s)

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