Title: New sensing technology for detection of the common inhalational anesthetic agent sevoflurane using conducting polypyrrole films
Authors: Wu, Ren-Jang
Huang, Yu-Ching
Chavali, Murthy
Lin, Tzu Hsuan
Hung, Shih-Lin
Luk, Hsiang-Ning
Department of Civil Engineering
Keywords: sevoflurane;polypyrrole;conducting polymer;UV-photopolymerization;VOC sensor
Issue Date: 1-Oct-2007
Abstract: A new type of gas sensor to measure resistance was developed to detect sevoflurane concentrations at room temperature. The measured FTIR spectrum of sevoflurane vapor was given. The sensing material polypyrrole was synthesized in situ by UV-photopolymerization. The relative resistance variation was 3.9 for a sevoflurane concentration of 1.2%. The sensor response time (60 s) and recovery time (20 s) were very short. Molecular dynamic calculations made for sevoflurane adsorption on polypyrrole revealed formation of a new bond, N-H-F. The bond length was predicted to be in the range of 0.2-0.4 nm. The bond energy was about 7.2 kcal/mol. Sensor responses to the concentrations 0. 1-10% were 1.57-5.9, respectively. (C) 2007 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.snb.2007.03.026
ISSN: 0925-4005
DOI: 10.1016/j.snb.2007.03.026
Volume: 126
Issue: 2
Begin Page: 387
End Page: 393
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