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.
- Stimuli responsive polymer
- Quantum dots
- Reversible switching of luminescence
Tagit, O., Janczewski, D. J., Tomczak, N., Han, M., Herek, J. L., & Vancso, G. J. (2010). Nanostructured thermoresponsive quantum dot/PNIPAM assemblies. European polymer journal, 46(7), 1397-1403. https://doi.org/10.1016/j.eurpolymj.2010.04.026