'On/off'-switchable catalysis by a smart enzyme-like imprinted polymer

Songjun Li*, Yi Ge, Ashutosh Tiwari, Shenqi Wang, Anthony P F Turner, Sergey A. Piletsky

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

49 Citations (Scopus)

Abstract

'On/off'-switchable catalysis by a smart enzyme-like imprinted polymer is reported. This unique imprinted polymer was composed of poly(N- isopropylacrylamide)-containing p-nitrophenyl phosphate-imprinted networks that exhibited temperature-dependent hydrophilicity/hydrophobicity. At a relatively low temperature (such as 20 °C), this polymer was capable of vigorous catalysis for the hydrolysis of p-nitrophenyl acetate due to its hydrophilic networks, which enabled access to the imprinted framework. On the contrary, at higher temperatures (such as 40 °C), this polymer demonstrated poor catalysis resulting from its dramatically increased hydrophobicity, which inhibited access to the imprinted sites. Unlike previously reported imprinted polymers which lack adjustable networks, this novel imprinted polymer employed thermosensitive poly(N-isopropylacrylamide) networks, thus enabling the switchable catalysis.

Original languageEnglish
Pages (from-to)173-180
Number of pages8
JournalJournal of Catalysis
Volume278
Issue number2
DOIs
Publication statusPublished - 07 Mar 2011
Externally publishedYes

Keywords

  • Catalysis
  • Imprinted catalyst
  • Modulation
  • Smart materials

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

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