Colour-tunable quantum dots/poly(NIPAM-co- AAc) hybrid microgels based on electrostatic interactions
作者：Yuting Cai, Gaolai Du, Guorong Gao, Jing Chen* and Jun Fu*
關鍵字：microgel, quantum dot, responsive
論文來源：期刊
具體來源：RSC Advances
發表時間：2016年
Monodisperse poly(NIPAM-co-AAc) microgels doped with either a monocolour photoluminescent quantum dot (QD) or multiple colour QDs have been fabricated by the charge-driven introduction of cysteaminecapped CdTe QDs and the collapse of the polymer network by adjusting the pH of the solution. The photoluminescence intensity and colour of the resulting microgels can be easily adjusted by changing the content of the CA–CdTe QDs in the hybrid microgels and using single or a mixture of different-sized QDs, respectively. In addition, the microgel-encapsulated QDs showed blue shifts, owing to surface coordination by the carboxylic acid. The combined effect of electrostatic interactions and surface chelating resulted in a reduction in microgel size. By tuning the ratio of QDs with different sizes, the photoluminescence of the hybrid hydrogels could be conveniently controlled. This work provides a facile and versatile method to fabricate colour-tunable or multifunctional hybrid hydrogels with broad potential applications.