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|Title:||Hybrid nanorattles of metal core and stimuli-responsive polymer shell for confined catalytic reactions|
|Source:||Li, G.L., Tai, C.A., Neoh, K.G., Kang, E.T., Yang, X. (2011-06). Hybrid nanorattles of metal core and stimuli-responsive polymer shell for confined catalytic reactions. Polymer Chemistry 2 (6) : 1368-1374. ScholarBank@NUS Repository. https://doi.org/10.1039/c1py00054c|
|Abstract:||Narrowly-dispersed silver@silica@poly(methacrylic acid) (Ag@SiO 2@PMAA) core-double shell hybrid nanoparticles (NPs) were first synthesized by distillation-precipitation polymerization, using silver@silica core-shell NPs from the sol-gel reaction as templates. Selective removal of the inorganic silica inner-shell from the Ag@SiO2@PMAA core-double shell hybrid NPs by HF etching produces the Ag@air@PMAA hybrid nanorattles with a Ag nanocore, PMAA shell and free space in between. The Ag nanocores, Ag@SiO 2 core-shell NPs, Ag@SiO2@PMAA core-double shell NPs and Ag@air@PMAA hybrid nanorattles were characterized by field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), Fourier-transform infrared (FT-IR) spectroscopy and energy-dispersive X-ray (EDX) analysis. The as-synthesized Ag@air@PMAA hybrid nanorattles were explored as a nanoreactor system for confined catalytic reaction. The rate of catalytic reaction can be further regulated by controlling molecule diffusion in and out of the stimuli-responsive PMAA shell through the simple variation of environmental stimuli, such as salt (NaCl) concentration of the medium. © 2011 The Royal Society of Chemistry.|
|Source Title:||Polymer Chemistry|
|Appears in Collections:||Staff Publications|
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