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author:

Lin, Zian (Lin, Zian.) [1] | Yang, Fan (Yang, Fan.) [2] | He, Xiwen (He, Xiwen.) [3] | Zhao, Xiaomiao (Zhao, Xiaomiao.) [4] | Zhang, Yukui (Zhang, Yukui.) [5]

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EI

Abstract:

A novel type of macroporous molecularly imprinted hybrid silica monolithic column was first developed for recognition of proteins. The macroporous silica-based monolithic skeleton was synthesized in a 4.6 mm i.d. stainless steel column by a mild sol-gel process with methyltrimethoxysilane (MTMS) as a sole precursor, and then vinyl groups were introduced onto the surface of the silica skeleton by chemical modification of γ-methacryloxypropyltrimethoxysilane (γ-MAPS). Subsequently, the molecularly imprinted polymer (MIP) coating was copolymerized and anchored onto the surface of the silica monolith. Bovine serum albumin (BSA) and lysozyme (Lyz), which differ greatly in molecular size, isoelectric point, and charge, were representatively selected for imprinted templates to evaluate recognition property of the hybrid silica-based MIP monolith. Some important factors, such as template-monomer molar ratio, total monomer concentration and crosslinking density, were systematically investigated. Under the optimum conditions, the obtained hybrid silica-based MIP monolith showed higher binding affinity for template than its corresponding non-imprinted (NIP) monolith. The imprinted factor (IF) for BSA and Lyz reached 9.07 and 6.52, respectively. Moreover, the hybrid silica-based MIP monolith displayed favorable binding characteristics for template over competitive protein. Compared with the imprinted silica beads for stationary phase and in situ organic polymer-based hydrogel MIP monolith, the hybrid silica MIP monolith exhibited higher recognition, stability and lifetime. © 2009 Elsevier B.V. All rights reserved.

Keyword:

Binding energy Chemical modification Column chromatography Crosslinking High performance liquid chromatography Mammals Molar concentration Molar ratio Monomers Musculoskeletal system Proteins Silica Sol-gel process

Community:

  • [ 1 ] [Lin, Zian]College of Chemistry, Nankai University, Tianjin, 300071, China
  • [ 2 ] [Lin, Zian]Ministry of Education Key Laboratory of Analysis and Detection for Food Safety, Fuzhou University, Fuzhou, Fujian 350002, China
  • [ 3 ] [Yang, Fan]College of Chemistry, Nankai University, Tianjin, 300071, China
  • [ 4 ] [He, Xiwen]College of Chemistry, Nankai University, Tianjin, 300071, China
  • [ 5 ] [Zhao, Xiaomiao]College of Chemistry, Nankai University, Tianjin, 300071, China
  • [ 6 ] [Zhang, Yukui]College of Chemistry, Nankai University, Tianjin, 300071, China
  • [ 7 ] [Zhang, Yukui]National Chromatographic Research and Analysis Center, Dalian Institution of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China

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Source :

Journal of Chromatography A

ISSN: 0021-9673

Year: 2009

Issue: 49

Volume: 1216

Page: 8612-8622

4 . 1 0 1

JCR@2009

3 . 8 0 0

JCR@2023

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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