15 December 2015 Synthesis and characterization of chitosan-based polyelectrolyte complexes, doped by quantum dots
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Proceedings Volume 9810, International Conference on Atomic and Molecular Pulsed Lasers XII; 981013 (2015) https://doi.org/10.1117/12.2225184
Event: XII International Conference on Atomic and Molecular Pulsed Lasers, 2015, Tomsk, Russian Federation
Abstract
Doping of polymer particles by a fluorophores results in the sensitization within the visible spectral region becoming very promising materials for sensor applications. Colloids of biocompatible chitosan-based polyelectrolyte complexes (PECs) doped with quantum dots (QD) of CdTe and CdSe/ZnS (with sizes of 2.0-2.4 nm) were synthesized and characterized by scanning electron microscopy, dynamic light scattering, ζ-potential measurements, absorption and luminescence (including time-resolved) spectroscopy. The influence of ionic strength (0.02-1.5 M) on absorption and photoluminescence properties of encapsulated into PEC and unencapsulated quantum dots was investigated. The stability of the emission intensity of the encapsulated quantum dots has been shown to be strongly dependent on concentration of quantum dots.
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N. V. Abuzova, M. A. Gerasimova, V. V. Slabko, E. A. Slyusareva, "Synthesis and characterization of chitosan-based polyelectrolyte complexes, doped by quantum dots", Proc. SPIE 9810, International Conference on Atomic and Molecular Pulsed Lasers XII, 981013 (15 December 2015); doi: 10.1117/12.2225184; https://doi.org/10.1117/12.2225184
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