Nanostructured thermoresponsive quantum dot/PNIPAM assemblies


Tagit, Oya and Janczewski, Dominik and Tomczak, Nikodem and Han, Ming Yong and Herek, Jennifer L. and Vancso, G. Julius (2010) Nanostructured thermoresponsive quantum dot/PNIPAM assemblies. European Polymer Journal, 46 (7). pp. 1397-1403. ISSN 0014-3057

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Abstract:Synthesis, characterization, and applications of novel thermoresponsive polymeric coatings for quantum dots (QDs) are presented. Comb-copolymers featuring hydrophobic alkyl groups, carboxylic groups and poly(N-isopropylacrylamide) (PNIPAM) side chains with molar masses ranging from 1000 g/mol to 25,400 g/mol were obtained. The amphiphilic comb-copolymers were shown to efficiently transfer the QDs to aqueous media. The PNIPAM-coated QD materials display a lower critical solution temperature (LCST). The absorbance, luminescence emission, size of the assemblies, and electrophoretic mobility were followed as a function of temperature and the reversibility of the temperature induced changes is demonstrated by cyclic heating and cooling.
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Copyright:© 2010 Elsevier
Science and Technology (TNW)
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