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Gold-loaded polymeric micelles with temperature-modulated catalytic activity

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Abstract

Four-armed amphiphilic block copolymers, polystyrene-b-poly(N-isopropylacrylamide) (PS-b-PNIPAM)4, were synthesized by atom transfer radical polymerization (ATRP). (PS-b-PNIPAM)4 self-assembled into micelles with PS block as core and thermoresponsive PNIPAM block as corona. The gold nanoparticles (Au NPs) with average diameter about 5.8 nm were immobilized on the surfaces of the micelles by the reduction of the corresponding ions. The micelle-supported gold nanoparticles (Au-micelles) were applied to catalyze the reduction of p-nitrophenol. Moreover, the activity of the Au-micelle catalyst could be modulated by the temperature and the Au-micelles could be easily recovered by changing the temperature and recycled four times with high catalytic activity.

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Authors and Affiliations

  1. The Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, 214122, China

    Na Hu  (胡娜), Dongjian Shi, Jihang Li, Junfeng Li & Mingqing Chen  (陈明清)

  2. Department of Chemical Engineering, Jiangyin Polytechnic College, Jiangyin, 214405, China

    Na Hu  (胡娜)

Authors
  1. Na Hu  (胡娜)
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  2. Dongjian Shi
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  3. Jihang Li
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  4. Junfeng Li
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  5. Mingqing Chen  (陈明清)
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Corresponding author

Correspondence to Mingqing Chen  (陈明清).

Additional information

Funded by the National Natural Science Foundation of China (No.51173072) and Research and Innovation Program for Graduate Colleges and Universities (Nos.CXZZ11_0469, JUDCF09006)

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Hu, N., Shi, D., Li, J. et al. Gold-loaded polymeric micelles with temperature-modulated catalytic activity. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 30, 1092–1097 (2015). https://doi.org/10.1007/s11595-015-1277-4

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  • DOI: https://doi.org/10.1007/s11595-015-1277-4

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