期刊
POLYMERS FOR ADVANCED TECHNOLOGIES
卷 12, 期 9, 页码 524-534出版社
JOHN WILEY & SONS LTD
DOI: 10.1002/pat.122
关键词
chemical and electrochemical polymerization; gas sensors; conducting polymers; 3-methoxyethoxythiophene; polyaniline; polythiophene; polypyrrole
Herein we report chemical and electrochemical formation of poly(3-methoxyethoxythiophene) and its copolymers with aniline, thiophene and pyrrole which give highly conducting polymeric materials. These are soluble in common organic solvents in the conducting state. Vie response mechanism of these compounds, to a selection of gases and vapours, was investigated using two techniques: measurement of conductance and mass changes using a four probe method and X-ray fluorescence (XRF) device, respectively. Prepared films were exposed to hydrogen halides, hydrogen cyanide, halogens, monochloroacetic acid (MCAA), 1-3-5 trichloromethylbenzene (TCMB), methylbenzyl bromide (MBB), bromoacetone (BA) and cyanogen bromide (CB). These gas sensors may have advantages compared to other sensors in their ability to operate at room temperature, low concentration, stability in air, sufficient diffusion and their selectivity. Copyright (C) 2001 John Wiley & Sons, Ltd.
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