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Molecularly Imprinted Polymers Having Amidine and Imidazole Functional Groups As an Enzyme-Mimetic Catalyst for Ester Hydrolysis
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  • Molecularly Imprinted Polymers Having Amidine and Imidazole Functional Groups As an Enzyme-Mimetic Catalyst for Ester Hydrolysis
  • Molecularly Imprinted Polymers Having Amidine and Imidazole Functional Groups As an Enzyme-Mimetic Catalyst for Ester Hydrolysis
저자명
Chen. Wen,Han. Dong-Keun,Ahn. Kwang-Duk
간행물명
Macromolecular research
권/호정보
2002년|10권 2호|pp.122-126 (5 pages)
발행정보
한국고분자학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

A molecularly imprinted polymer (MIP) having both amidine and imidazole functional groups in the active site has been prepared using p-nitrophenyl phosphate as a transition state analogue (TSA). The imprinted polymer MIP with amidine and imidazole found to have the highest hydrolysis activity compared with other MIPs with either amidine or imidazole groups only. It is postulated a cooperative effect between amidine and imidazole in the hydrolysis of p-nitrophenyl methyl carbonate (NPMC) as a substrate when both groups were arranged in proximity by molecular imprinting. The rate enhancement of the hydrolysis by MIP was 60 folds over the uncatalyzed solution reaction and two folds compared with the control non-imprinted polymer CPI having both functional groups. The enzyme-mimetic catalytic hydrolysis of p-nitrophenyl acetate by MIP was evaluated in buffer at pH 7.0 with $K_{m}$ of 1.06 mM and $k_{cat}$ of 0.137 $h^{-1}$ . . .