Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 266, Issue -, Pages 830-840Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2018.03.157
Keywords
Textile chemiresistors; Polymer ionic liquids; Detection of toxic gases; Discrimination according to dipole moments of analytes
Funding
- Czech Science Foundation (GACR) [17-13427S]
- NATO's Public Diplomacy Division [984597]
- Ministry of Education, Youth and Sports [LTC17058]
- COST Action [CA15107]
- specific university research (MSMT) [20-SVV/2017]
- Marie Curie Initial Training Network - EC People Programme OrgBIO (Marie Curie ITN) [GA607896]
- Science Foundation Ireland (SFI) under the Insight Centre for Data Analytics initiative [SFI/12/RC/2289]
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The article presents pioneering research of textile chemiresistors on Evolon and Polyester substrates equipped with graphite electrodes and in-situ polymerized poly(tetrabutylphosphonium 3-sulfopropylacrylate) or poly(tributylhexylphosphonium 3-sulfopropylacrylate) sensitive layers. The DC- and AC-responses to 10 ppm of methanol, nitrogen dioxide, 4-bromoacetophenone, diethylmalonate and yperite were then investigated at laboratory temperature - the reference was pure synthetic air. Under these circumstances the DC-responses (S-DC) varied from 0.48 to 1.36 and maximum AC-responses (S-pa) from 8 to 26 deg. It was shown that sensor dynamics depends mainly on molecular weight of the analytes. Moreover, the magnitude of AC-responses correlated both qualitatively and quantitatively with the dipole moments of the analyzed molecules. (C) 2018 Elsevier B.V. All rights reserved.
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