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Issue 10, 2011
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A route to diffusion embedding of CdSe/CdS quantum dots in fluoropolymer microparticles

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Abstract

A green and efficient synthetic approach has been developed using supercritical carbon dioxide as a transport medium for the diffusion embedding of core shell CdSe/CdS quantum dots (QD) into polytetrafluorethylene (PTFE) microparticles, leading to matrix immobilisation of QD in PTFE. Transmission electron microscopy and photoluminescence spectroscopy probes show that the products are fine dispersive photoluminescent nanocomposites with QD being homogeneously isolated throughout the polymer microparticle volume. Up to 3 × 105 QD can be embedded into a single ∼1 μm PTFE microparticle by this technique without degradation of the microparticulate structure. A further photoluminescence study of thermally heated and laser irradiated CdSe/CdS/PTFE microparticles reveals excellent optical performance and stability over the 20–80 °C temperature range.

Graphical abstract: A route to diffusion embedding of CdSe/CdS quantum dots in fluoropolymer microparticles

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Publication details

The article was received on 14 May 2011, accepted on 26 Jul 2011 and first published on 22 Aug 2011


Article type: Communication
DOI: 10.1039/C1GC15553A
Citation: Green Chem., 2011,13, 2696-2700
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    A route to diffusion embedding of CdSe/CdS quantum dots in fluoropolymer microparticles

    V. K. Popov, V. N. Bagratashvili, L. I. Krotova, A. O. Rybaltovskii, D. C. Smith, P. S. Timashev, J. Yang, Yurii. S. Zavorotnii and S. M. Howdle, Green Chem., 2011, 13, 2696
    DOI: 10.1039/C1GC15553A

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