Thermo-sensitive Microgels Supported Gold Nanoparticles as Temperature-mediated Catalyst

Zhou, Xian-Jing (author)

Lu, Hai-Peng (author)

Kong, Ling-Li (author)

Zhang, Dong (author)

Zhang, Wei (author)

Nie, Jing-Jing (author)

Yuan, Jia-Yin (author): Stockholms universitet,Institutionen för material- och miljökemi (MMK)

Du, Bin-Yang (author)

Wang, Xin-Ping (author)

(creator_code:org_t)

2018-08-30
2019
English.
In: Chinese Journal of Polymer Science. - : Springer Science and Business Media LLC. - 0256-7679 .- 1439-6203. ; 37:3, s. 235-242

Related links:: https://doi.org/10.1...; show more...; http://www.cjps.org/...; https://urn.kb.se/re...; https://doi.org/10.1...; show less...

Abstract Subject headings

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.

By the author/editor: Zhou, Xian-Jing; Lu, Hai-Peng; Kong, Ling-Li; Zhang, Dong; Zhang, Wei; Nie, Jing-Jing; show more...; Yuan, Jia-Yin; Du, Bin-Yang; Wang, Xin-Ping; show less...

About the subject

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