Thiol-containing microspheres as polymeric ligands for the immobilisation of quantum dots

Jonathan M. Behrendt; Mohammad Afzaal; Lois M. Alexander; Mark Bradley; Anna V. Hine; David Nagel; Paul O'Brien; Katayune Presland; Andrew J. Sutherland

doi:10.1039/B814261K

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Journal of Materials Chemistry

Issue 2, 2009

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Thiol-containing microspheres as polymeric ligands for the immobilisation of quantum dots

Jonathan M. Behrendt , Mohammad Afzaal , Lois M. Alexander , Mark Bradley , Anna V. Hine , David Nagel , Paul O'Brien , Katayune Presland and Andrew J. Sutherland

J. Mater. Chem., 2009, 19, 215-221

DOI: 10.1039/B814261K
Received 16 Aug 2008, Accepted 13 Nov 2008
First published on the web 01 Dec 2008

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Abstract
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The first demonstration of the use of functionalised polystyrene beads as “polymeric ligands” for the immobilisation of quantum dots (QDs) is presented. Specifically, thiol-containing polystyrene microspheres were synthesised and used to incorporate QDs via a swelling/doping strategy. The resultant composite materials were shown to be highly stable against QD leaching in both apolar and polar solvents and retained an identical QD emission profile to non-immobilised QDs. This straightforward approach also allows easy access to controllable and reproducible multiple-QD-containing microspheres.

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Fluoresence assay for assessment of QD-loading into thiolmicrospheres, TEM image of a single QD-microsphere and confocalmicroscope image of PVP-QD-microspheres in water.
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Jonathan M. Behrendt
Mohammad Afzaal
Lois M. Alexander
Mark Bradley
Anna V. Hine
David Nagel
Paul O'Brien
Katayune Presland
Andrew J. Sutherland

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Journal of Materials Chemistry

Thiol-containing microspheres as polymeric ligands for the immobilisation of quantum dots

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