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Tuning the molecular sensitivity of conductive polymer resistive sensors by chemical functionalization

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dc.title Tuning the molecular sensitivity of conductive polymer resistive sensors by chemical functionalization en
dc.contributor.author Frontera, Evelina
dc.contributor.author Cavallo, Pablo Cesar
dc.contributor.author Olejník, Robert
dc.contributor.author Acevedo, Diego Fernando
dc.contributor.author Slobodian, Petr
dc.contributor.author Barbero, Cesar A.
dc.contributor.author Sáha, Petr
dc.relation.ispartof Key Engineering Materials
dc.identifier.issn 1013-9826 Scopus Sources, Sherpa/RoMEO, JCR
dc.identifier.isbn 978-303835051-4
dc.date.issued 2014
utb.relation.volume 605
dc.citation.spage 597
dc.citation.epage 600
dc.event.title 3rd International Conference on Materials and Applications for Sensors and Transducers, IC-MAST 2013
dc.event.location Prague
utb.event.state-en Czech Republic
utb.event.state-cs Česká republika
dc.event.sdate 2013-09-13
dc.event.edate 2013-09-17
dc.type conferenceObject
dc.language.iso en
dc.publisher Trans Tech Publications Ltd
dc.identifier.doi 10.4028/www.scientific.net/KEM.605.597
dc.subject Conductive polymer en
dc.subject Functionalization en
dc.subject Resistive gas sensor en
dc.description.abstract Polyaniline thin films are chemically functionalized by nucleophilic addition of thiols beareing different functional groups: carboxylic, amine, -dodecyl and sulfonic. The modification is tested using FTIR and XPS spectroscopy. Then, the films are used as resistive sensors for different volatile organic compounds in a static measuring system. The sensitivity of conducting polymers to alcohols and heptane is strongly affected by the chemical functionalization of the materials. Polyaniline show an increasing signal when the chain length of different alcohols is increased. The incorporation of hydrophilic groups on the PANI chains seems to maintain the trend. On the other hand, the polymer modified with a long alkyl chain (PANI-DOT) show negative response for methanol and the signal increases up to propanol to decrease for longer chains. PANI-DOT show the largest signal for heptane of all polymers tested. Therefore, the functional group attached to the conductive polymer chain can be used to tune the molecular sensitivity of the resistive sensor. © (2014) Trans Tech Publications. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1004635
utb.identifier.obdid 43873059
utb.identifier.scopus 2-s2.0-84900461313
utb.identifier.wok 000348035600147
utb.identifier.coden KEMAE
utb.source d-scopus
dc.date.accessioned 2015-06-04T12:54:36Z
dc.date.available 2015-06-04T12:54:36Z
utb.contributor.internalauthor Olejník, Robert
utb.contributor.internalauthor Slobodian, Petr
utb.contributor.internalauthor Sáha, Petr
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