Wu, S.; Dzubiella, J.; Kaiser, J.; Drechsler, M.; Guo, X.; Ballauff, M.; Lu, Y.: Thermosensitive Au-PNIPA Yolk-Shell Nanoparticles with Tunable Selectivity for Catalysis. Angewandte Chemie - International Edition 51 (2012), p. 2229-2233
10.1002/anie.201106515

Abstract:
We introduce an inorganic-organic hybrid yolk-shell nanostructure that contains metallic Au nanoparticle as core and thermosensitive microgel PNIPA as shell. The catalytic selectivity of Au-PNIPA yolk-shell nanoparticles can be tuned between hydrophilic and more hydrophobic molecules through the volume transition of PNIPA shell for the catalytic reduction of 4-nitrophenol and nitrobenzene in the presence of NaBH4.