Nanostructured thermoresponsive quantum dot/PNIPAM assemblies

O. Tagit, D.J. Janczewski, N. Tomczak, Mingyong Han, Jennifer Lynn Herek, Gyula J. Vancso

Research output: Contribution to journalArticleAcademicpeer-review

24 Citations (Scopus)

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.
Original languageEnglish
Pages (from-to)1397-1403
Number of pages7
JournalEuropean polymer journal
Volume46
Issue number7
DOIs
Publication statusPublished - 2010

Keywords

  • METIS-269886
  • PNIPAM
  • Stimuli responsive polymer
  • Quantum dots
  • Reversible switching of luminescence
  • IR-80282

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