Citation: Xian-Jing Zhou, Hai-Peng Lu, Ling-Li Kong, Dong Zhang, Wei Zhang, Jing-Jing Nie, Jia-Yin Yuan, Bin-Yang Du, Xin-Ping Wang. Thermo-sensitive Microgels Supported Gold Nanoparticles as Temperature-mediated Catalyst[J]. Chinese Journal of Polymer Science, ;2019, 37(3): 235-242. doi: 10.1007/s10118-019-2182-7 shu

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

a.
Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
b.
Department of Chemistry, Zhejiang University, Hangzhou 310027, China
c.
Department of Materials and Environmental Chemistry, Stockholm University, Stockholm SE-10691, Sweden
d.
Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science & Engineering, Zhejiang University, Hangzhou 310027, China

Corresponding author: Bin-Yang Du, duby@zju.edu.cn Xin-Ping Wang, wxinping@yahoo.com
Received Date: 22 July 2018
Revised Date: 13 August 2018
Accepted Date: 14 August 2018
Available Online: 30 August 2018

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 °C. The Au@PNI MGs were used for the reduction of 4-nitrophenol, of which the catalytic activity could be modulated by temperature.
- Microgel,
- Thermo-sensitive,
- Gold nanoparticle,
- Catalyst
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