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Covalent immobilization of molecularly imprinted polymer nanoparticles using an epoxy silane.

Kamra, Tripta LU ; Chaudhary, Shilpi LU ; Xu, Changgang LU ; Johansson, Niclas LU ; Montelius, Lars LU ; Schnadt, Joachim LU and Ye, Lei LU (2015) In Journal of Colloid and Interface Science 445. p.277-284
Abstract
Molecularly imprinted polymers (MIPs) can be used as antibody mimics to develop robust chemical sensors. One challenging problem in using MIPs for sensor development is the lack of reliable conjugation chemistry that allows MIPs to be fixed on transducer surface. In this work, we study the use of epoxy silane to immobilize MIP nanoparticles on model transducer surfaces without impairing the function of the immobilized nanoparticles. The MIP nanoparticles with a core-shell structure have selective molecular binding sites in the core and multiple amino groups in the shell. The model transducer surface is functionalized with a self-assembled monolayer of epoxy silane, which reacts with the core-shell MIP particles to enable straightforward... (More)
Molecularly imprinted polymers (MIPs) can be used as antibody mimics to develop robust chemical sensors. One challenging problem in using MIPs for sensor development is the lack of reliable conjugation chemistry that allows MIPs to be fixed on transducer surface. In this work, we study the use of epoxy silane to immobilize MIP nanoparticles on model transducer surfaces without impairing the function of the immobilized nanoparticles. The MIP nanoparticles with a core-shell structure have selective molecular binding sites in the core and multiple amino groups in the shell. The model transducer surface is functionalized with a self-assembled monolayer of epoxy silane, which reacts with the core-shell MIP particles to enable straightforward immobilization. The whole process is characterized by studying the treated surfaces after each preparation step using atomic force microscopy, scanning electron microscopy, fluorescence microscopy, contact angle measurements and X-ray photoelectron spectroscopy. The microscopy results show that the MIP particles are immobilized uniformly on surface. The photoelectron spectroscopy results further confirm the action of each functionalization step. The molecular selectivity of the MIP-functionalized surface is verified by radioligand binding analysis. The particle immobilization approach described here has a general applicability for constructing selective chemical sensors in different formats. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Colloid and Interface Science
volume
445
pages
277 - 284
publisher
Elsevier
external identifiers
  • pmid:25626133
  • wos:000350006700033
  • scopus:84921517663
ISSN
1095-7103
DOI
10.1016/j.jcis.2014.12.086
language
English
LU publication?
yes
id
c64ca7ea-a881-4518-8b50-d3b33ea49a2a (old id 5039414)
date added to LUP
2015-02-10 19:30:05
date last changed
2017-11-19 03:00:36
@article{c64ca7ea-a881-4518-8b50-d3b33ea49a2a,
  abstract     = {Molecularly imprinted polymers (MIPs) can be used as antibody mimics to develop robust chemical sensors. One challenging problem in using MIPs for sensor development is the lack of reliable conjugation chemistry that allows MIPs to be fixed on transducer surface. In this work, we study the use of epoxy silane to immobilize MIP nanoparticles on model transducer surfaces without impairing the function of the immobilized nanoparticles. The MIP nanoparticles with a core-shell structure have selective molecular binding sites in the core and multiple amino groups in the shell. The model transducer surface is functionalized with a self-assembled monolayer of epoxy silane, which reacts with the core-shell MIP particles to enable straightforward immobilization. The whole process is characterized by studying the treated surfaces after each preparation step using atomic force microscopy, scanning electron microscopy, fluorescence microscopy, contact angle measurements and X-ray photoelectron spectroscopy. The microscopy results show that the MIP particles are immobilized uniformly on surface. The photoelectron spectroscopy results further confirm the action of each functionalization step. The molecular selectivity of the MIP-functionalized surface is verified by radioligand binding analysis. The particle immobilization approach described here has a general applicability for constructing selective chemical sensors in different formats.},
  author       = {Kamra, Tripta and Chaudhary, Shilpi and Xu, Changgang and Johansson, Niclas and Montelius, Lars and Schnadt, Joachim and Ye, Lei},
  issn         = {1095-7103},
  language     = {eng},
  pages        = {277--284},
  publisher    = {Elsevier},
  series       = {Journal of Colloid and Interface Science},
  title        = {Covalent immobilization of molecularly imprinted polymer nanoparticles using an epoxy silane.},
  url          = {http://dx.doi.org/10.1016/j.jcis.2014.12.086},
  volume       = {445},
  year         = {2015},
}