Authors: Shiigi H
, Okamura K
, Kijima D
, Hironaka A
, Deore B
, Sree U
, Nagaoka T
Fabrication process and characterization of a novel structural isomer sensor - Molecularly imprinted overoxidized polypyrrole film.
Publication date: 2003
Journal: Electrochemical and Solid State Letters
Abstract: The preparation process of a molecularly imprinted overoxidized-polypyrrole film has been studied with the quartz crystal microbalance. The film has been derived from 1- naphthalenesulfonate (1-NS)-doped polypyrrole through overoxidation. The extraction of 1-NS (dedoping) has created a shape-complementary cavity at the surface. The resulting overoxidized-polypyrrole film imprinted with 1-NS exhibited an excellent selectivity to the structural isomer, 1-NS. Aqueous 0.010 M 1-NS showed a frequency decrease of 110 Hz, while 2-NS shows only a negligible change. Thus, the shape-complementary cavity can recognize the difference in the spatial configuration of the SO3- substituent between the 1 and 2 positions. (C) 2002 The Electrochemical Society
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