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Published in: Journal of Nanoparticle Research 12/2017

01-12-2017 | Research Paper

Förster resonance energy transfer in hybrid associates of colloidal Ag2S quantum dots with thionine molecules

Authors: Oleg V. Ovchinnikov, Mikhail S. Smirnov, Tamara S. Kondratenko, Sergey A. Ambrosevich, Mikhail T. Metlin, Irina G. Grevtseva, Aleksey S. Perepelitsa

Published in: Journal of Nanoparticle Research | Issue 12/2017

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Abstract

Nonradiative resonance energy transfer in hydrophilic hybrid associates of thionine molecules (TH+) with colloidal Ag2S quantum dots (QDs) with average diameter of 3.5 nm was studied. Photoluminescence spectra and its decay shown that for these systems the supplemental photosensitization of recombination luminescence of Ag2S QDs (1200 nm) from the region of TH+ fluorescence (618 nm) is possible. It was found that the average lifetime of TH+ molecules luminescence is shortened during their association with Ag2S QDs. Approximation of luminescence decay by stretched exponent with value of parameter β = 0.5 indicates on the inductive-resonance dipole-dipole (Förster) mechanism of nonradiative energy transfer (FRET). The efficiency of FRET was 0.29–0.41.

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Literature
go back to reference Heiss WD (2005) Quantum Dots: a doorway to nanoscale physics. Springer, Berlin, pp 1–174CrossRef Heiss WD (2005) Quantum Dots: a doorway to nanoscale physics. Springer, Berlin, pp 1–174CrossRef
go back to reference Lakowicz RJ (2006) Principles of fluorescence spectroscopy. Springer, New York, pp 1–204CrossRef Lakowicz RJ (2006) Principles of fluorescence spectroscopy. Springer, New York, pp 1–204CrossRef
Metadata
Title
Förster resonance energy transfer in hybrid associates of colloidal Ag2S quantum dots with thionine molecules
Authors
Oleg V. Ovchinnikov
Mikhail S. Smirnov
Tamara S. Kondratenko
Sergey A. Ambrosevich
Mikhail T. Metlin
Irina G. Grevtseva
Aleksey S. Perepelitsa
Publication date
01-12-2017
Publisher
Springer Netherlands
Published in
Journal of Nanoparticle Research / Issue 12/2017
Print ISSN: 1388-0764
Electronic ISSN: 1572-896X
DOI
https://doi.org/10.1007/s11051-017-4093-2

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