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Thermo-sensitive Microgels Supported Gold Nanoparticles as Temperature-mediated Catalyst
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Number of Authors: 92019 (English)In: Chinese Journal of Polymer Science, ISSN 0256-7679, E-ISSN 1439-6203, Vol. 37, no 3, p. 235-242Article in journal (Refereed) Published
Abstract [en]

Microgels with a thermo-sensitive poly(N-isopropylacrylamide) (polyNIPAm) backbone and bis-imidazolium (VIM) ionic cross-links, denoted as poly(NIPAm-co-VIM), were successfully prepared. The as-synthesized ionic microgels were converted to nanoreactors, denoted as Au@PNI MGs, upon generation and immobilization of gold nanoparticles (Au NPs) of 5-8 nm in size into poly(NIPAm-co-VIM). The content of Au NPs in microgels could be regulated by controlling the 1,6-dibromohexane/vinylimidazole molar ratio in the quaternization reaction. The microgel-based nanoreactors were morphologically spherical and uniform in size, and presented reversible thermo-sensitive behavior with volume phase transition temperatures (VPTTs) at 39-40 degrees C. The Au@PNI MGs were used for the reduction of 4-nitrophenol, of which the catalytic activity could be modulated by temperature.

Place, publisher, year, edition, pages
2019. Vol. 37, no 3, p. 235-242
Keywords [en]
Microgel, Thermo-sensitive, Gold nanoparticle, Catalyst
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:su:diva-166694DOI: 10.1007/s10118-019-2182-7ISI: 000456711900005OAI: oai:DiVA.org:su-166694DiVA, id: diva2:1297390
Available from: 2019-03-19 Created: 2019-03-19 Last updated: 2019-03-19Bibliographically approved

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Yuan, Jia-Yin
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Department of Materials and Environmental Chemistry (MMK)
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