Issue 10, 2011
From the journal:

Green Chemistry

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

Vladimir K. Popov,*a   Viktor N. Bagratashvili,a   Larisa I. Krotova,a   Aleksei O. Rybaltovskii,c   David C. Smith,d   Peter S. Timashev,a   Jixin Yang,be   Yurii. S. Zavorotniic  and  Steven M. Howdleb  

* Corresponding authors

a Institute of Laser and Information Technologies, Russian Academy of Sciences, 142190 Pionerskaya str. 2, Troitsk, Russian Federation
E-mail: popov@laser.ru
Fax: +74967510201
Tel: +74967510342

b School of Chemistry, The University of Nottingham, University Park, Nottingham, UK
E-mail: steve.howdle@nottingham.ac.uk
Fax: +44(0)1159513486
Tel: +44(0)1159513058

c Lomonosov Moscow State University Skobeltsyn Institute of Nuclear Physics (MSU SINP), 1(2), Leninskie gory, GSP-1, Moscow, Russian Federation
E-mail: aor.msu@gmail.com
Fax: +74959390896
Tel: +74959391818

d School of Physics and Astronomy, University of Southampton, Highfield, Southampton, UK
E-mail: dcsmith@phys.soton.ac.uk
Fax: +44(0)2380593910
Tel: +44(0)2380595823

e Material Science Research Centre, Glyndŵr University, Wrexham, UK
E-mail: j.yang@glyndwr.ac.uk
Fax: +44(0)1978293370
Tel: +44(0)1978293123

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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Article information

DOI
https://doi.org/10.1039/C1GC15553A
Article type
Communication
Submitted
14 May 2011
Accepted
26 Jul 2011
First published
22 Aug 2011

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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