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An esterolytic imprinted polymer prepared via a silica-supported transition state analogue

Lettau, K; Warsinke, A; Laschewsky, A; Mosbach, Klaus LU ; Yilmaz, Ecevit LU and Scheller, F W (2004) In Chemistry of Materials 16(14). p.2745-2749
Abstract
In this work we describe a new preparation method for an esterolytic imprinted polymer with catalytic sites on the surface. A template was prepared by immobilizing a transition state analogue (phosphoramidic acid derivative) of an esterolytic reaction within porous silica particles. Polymerization within the pores was carried out using 4-vinylimidazole as a functional monomer and divinylbenzene as a cross-linker. The polymer was released by dissolution of the silica support with hydrofluoric acid and catalytic properties were studied by incubation with three different 4-nitrophenylesters and spectrophotometric determination of the released 4-nitrophenol. For 4-nitrophenyl acetate an activity of 211 nmol min(-1) mg(-1) and a K-m value of... (More)
In this work we describe a new preparation method for an esterolytic imprinted polymer with catalytic sites on the surface. A template was prepared by immobilizing a transition state analogue (phosphoramidic acid derivative) of an esterolytic reaction within porous silica particles. Polymerization within the pores was carried out using 4-vinylimidazole as a functional monomer and divinylbenzene as a cross-linker. The polymer was released by dissolution of the silica support with hydrofluoric acid and catalytic properties were studied by incubation with three different 4-nitrophenylesters and spectrophotometric determination of the released 4-nitrophenol. For 4-nitrophenyl acetate an activity of 211 nmol min(-1) mg(-1) and a K-m value of 2.2 mmol L-1 was obtained. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Chemistry of Materials
volume
16
issue
14
pages
2745 - 2749
publisher
The American Chemical Society
external identifiers
  • wos:000222550600011
  • scopus:3142752837
ISSN
0897-4756
DOI
10.1021/cm0352394
language
English
LU publication?
yes
id
8418496e-11ee-4db6-8828-64c857b0bb85 (old id 141004)
date added to LUP
2007-07-16 09:55:46
date last changed
2017-01-01 04:54:16
@article{8418496e-11ee-4db6-8828-64c857b0bb85,
  abstract     = {In this work we describe a new preparation method for an esterolytic imprinted polymer with catalytic sites on the surface. A template was prepared by immobilizing a transition state analogue (phosphoramidic acid derivative) of an esterolytic reaction within porous silica particles. Polymerization within the pores was carried out using 4-vinylimidazole as a functional monomer and divinylbenzene as a cross-linker. The polymer was released by dissolution of the silica support with hydrofluoric acid and catalytic properties were studied by incubation with three different 4-nitrophenylesters and spectrophotometric determination of the released 4-nitrophenol. For 4-nitrophenyl acetate an activity of 211 nmol min(-1) mg(-1) and a K-m value of 2.2 mmol L-1 was obtained.},
  author       = {Lettau, K and Warsinke, A and Laschewsky, A and Mosbach, Klaus and Yilmaz, Ecevit and Scheller, F W},
  issn         = {0897-4756},
  language     = {eng},
  number       = {14},
  pages        = {2745--2749},
  publisher    = {The American Chemical Society},
  series       = {Chemistry of Materials},
  title        = {An esterolytic imprinted polymer prepared via a silica-supported transition state analogue},
  url          = {http://dx.doi.org/10.1021/cm0352394},
  volume       = {16},
  year         = {2004},
}