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CdS and ZnS quantum dots embedded in hyaluronic acid films

G Khachatryan, K Khachatryan, L Stobinski, P Tomasik, M Fiedorowicz, HM Lin

DOI:10.1016/j.jallcom.2009.03.011

Abstract

An in situ synthesis of ZnS and CdS quantum dots (QDs) in an aqueous solution of sodium hyaluronate (Hyal) produced foils emitting light on excitation with a UV light. The wavelength of emission was only slightly QDs size and more QDs concentration dependent and reached up to ∼320 nm in the case of ZnS and ∼400–450 nm in the case of CdS. Nanoparticles remained as non-agglomerated 10–20 nm nanoclusters.

CdS/Hyal and ZnS/Hyal—QDs biocomposites were characterized using photoluminescence (PL), IR spectrometric techniques, and Transmission Electron Microscopy (TEM). The absolute molecular weights, radii of gyration, Rg, and thermodynamic properties of the obtained foils are given. Electric resistivity studies performed for the hyaluronic foil in the 100–1000 V range have revealed that the hyaluronate foil has very weak conducting properties and QDs only insignificantly affect those properties as QDs practically did not interact with the foil. Size exclusion chromatography showed a decrease in the molecular weight of the hyaluronate after generation of QDs in its solution, particularly in the lower molecular fraction of the hyaluronate. The generation of CdS QDs was more destructive for the polysaccharide matrix. Keywords

    Quantum dots (QDs);
    Biocomposites;
    Light-emitting foils;
    Nanocrystals;
    Semiconductors

How to cite this paper?
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MLA Khachatryan, G., et al. "CdS and ZnS quantum dots embedded in hyaluronic acid films." Journal of Alloys and Compounds 481.1 (2009): 402-406.

APA Khachatryan, G., Khachatryan, K., Stobinski, L., Tomasik, P., Fiedorowicz, M., & Lin, H. M. (2009). CdS and ZnS quantum dots embedded in hyaluronic acid films. Journal of Alloys and Compounds, 481(1), 402-406.

ISO 690 KHACHATRYAN, G., et al. CdS and ZnS quantum dots embedded in hyaluronic acid films. Journal of Alloys and Compounds, 2009, 481.1: 402-406.

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