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Reference type: Book Chapter
Authors: Kobayashi T, Wang HY, Fukaya T, Fujii N
Publication date: 1998
Chapter title: Molecular imprinted membranes prepared by phase inversion of polyacrylonitrile copolymers containing carboxylic acid groups.
Chapter number: 13
Page numbers: 188-201.
DOI: 10.1021/bk-1998-0703.ch013

Book title: Molecular and Ionic Recognition with Imprinted Polymers
Editors: Bartsch RA, Maeda M
Publisher: The American Chemical Society
City: Washington DC
Series title: ACS Symposium Series
Volume number: 703

Abstract: Phase inversion of polyacrylonitrile copolymers containing carboxylic acid groups is utilized to prepare molecular imprinted membranes for theophylline (THO). The copolymer cast solution of dimethylsulfoxide (DMSO) with the THO template is immersed in water which causes the polymer including the template to coagulate in the nonsolvent. After removal of the template from the solidified copolymer membrane, high selectivity for rebinding of THO is observed compared to binding of the structurally related molecule caffeine. The molecular imprinting process was affected by the template concentration in the DMSO cast solution, the coagulation conditions, and the carboxylic acid content in the copolymer. High binding selectivity of the THO solute by the THO-imprinted copolymer membrane arises from the formation of imprinted sites in which free OH groups of the carboxylic acid units form hydrogen bonds with the THO

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