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dc.contributor.author
Cavallo, Pablo Césa
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Frontera, Evelina

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Acevedo, Diego Fernando

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Olejnik, Robert
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Slobodian, Petr
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Saha, Petr
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Barbero, César Alfredo

dc.date.available
2018-08-21T12:32:14Z
dc.date.issued
2016-05
dc.identifier.citation
Cavallo, Pablo Césa; Frontera, Evelina; Acevedo, Diego Fernando; Olejnik, Robert; Slobodian, Petr; et al.; Functionalized polyanilines made by nucleophilic addition reaction, applied in gas sensors field; Elsevier Science Sa; Synthetic Metals; 215; 5-2016; 127-133
dc.identifier.issn
0379-6779
dc.identifier.uri
http://hdl.handle.net/11336/56292
dc.description.abstract
Resistive sensors for organic volatile compounds are built using functionalized polyanilines. The functionalization of polyaniline (PANI) is achieved by nucleophilic addition with thiols and is confirmed by X-ray Photoelectron Spectroscopy. The modified polymers tested as resistive sensors change the polymer sensitivity to volatile compounds. PANI shows a signal that increases when the chain length increases, however, functionalized polyanilines show a completely different behaviour. The sensitivity to long chain alcohols increases when PANI is modified with long alkyl chains, the opposite behaviour occurs when more hydrophilic groups are bonding to the polymer. We conclude that the different sensitivity of the functionalized polyanilines to the same volatile molecule allows identifying the analyte. In that way, multisensor arrays based on these materials could be used as an electronic nose. To explain this behaviour measurements of contact angle were performed. The data reveal that all modified polyanilines are more hydrophobic than PANI, this is likely to be due to the presence of the sulphur atoms. Therefore, we conclude that the hydrophobic/hydrophilic nature of the surface plays an important role but is not decisive in the sensor response. Also, Van der Waals interactions between the alkyl chains bound to de PANI and present in the sensed alcohols play an important role. Accordingly, the sensitivity for a plain alkane (heptane) increases strongly when PANI is modified with long alkyl chains.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science Sa

dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Modified Polymers
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Organic Volatile Compounds
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Polyaniline
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Resistive Sensors
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Otras Ciencias Químicas

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Ciencias Químicas

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CIENCIAS NATURALES Y EXACTAS

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Otras Ciencias Químicas

dc.subject.classification
Ciencias Químicas

dc.subject.classification
CIENCIAS NATURALES Y EXACTAS

dc.title
Functionalized polyanilines made by nucleophilic addition reaction, applied in gas sensors field
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-08-15T13:58:29Z
dc.journal.volume
215
dc.journal.pagination
127-133
dc.journal.pais
Países Bajos

dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Cavallo, Pablo Césa. Universidad Nacional de Río Cuarto; Argentina. Universidad Nacional de Rio Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química y Física; Argentina
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Fil: Frontera, Evelina. Universidad Nacional de Rio Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química y Física; Argentina
dc.description.fil
Fil: Acevedo, Diego Fernando. Universidad Nacional de Rio Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química y Física; Argentina
dc.description.fil
Fil: Olejnik, Robert. Univerzita Tomase Bati Ve Zline; República Checa
dc.description.fil
Fil: Slobodian, Petr. Univerzita Tomase Bati Ve Zline; República Checa
dc.description.fil
Fil: Saha, Petr. Univerzita Tomase Bati Ve Zline; República Checa
dc.description.fil
Fil: Barbero, César Alfredo. Universidad Nacional de Rio Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química y Física; Argentina
dc.journal.title
Synthetic Metals

dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S037967791630039X
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.synthmet.2016.02.013
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