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dc.contributor.author
del Rosso, Pablo Gabriel
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Romagnoli, Maria Jose
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Almassio, Marcela
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Barbero, César Alfredo
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Garay, Raúl Oscar
dc.date.available
2020-04-03T22:03:50Z
dc.date.issued
2014-11
dc.identifier.citation
del Rosso, Pablo Gabriel; Romagnoli, Maria Jose; Almassio, Marcela; Barbero, César Alfredo; Garay, Raúl Oscar; Diphenylanthrylene and diphenylfluorene-based segmented conjugated polymer films as fluorescent chemosensors for nitroaromatics in aqueous solution; Elsevier Science Sa; Sensors and Actuators B: Chemical; 203; 11-2014; 612-620
dc.identifier.issn
0925-4005
dc.identifier.uri
http://hdl.handle.net/11336/101988
dc.description.abstract
A new regularly segmented conjugated polymer with diphenylanthryl chromophores bearing oxyethylene side chains was synthesized. The amorphous polymer was solution-processable. The formation of aggregated species in solid phase was hindered by the bent microstructure while fluorescence depolarization measurements showed high exciton mobilities among the short chromophores. The fluorescence quenching of films of PA toward nitroaromatics in aqueous solution was evaluated and compared with the behavior of PF; a diphenylfluorenylene-based segmented CP bearing non-polar aliphatic side chains. Films of both polymers exhibit remarkable sensing abilities in the micromolar range thus showing that hydrated films have porosity at the molecular level. The fluorene-based PF had higher overall quenching responses to NACs than the anthryl-based PA while nitrophenols were more effective than nitrotoluenes in quenching the fluorescence of both PA and PF. Such differences are rationalized in terms of polymer?analyte interactions. The binding strengths between analytes and sensing materials were evaluated by their Hansen solubility parameters. We concluded that strong analyte cohesive interactions with the polymer could drag analyte diffusion and impair polymer sensing ability and should be avoided in the design of responsive polymers to be used in the present sensing configuration.
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
Fluorescence quenching
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Segmented conjugated polymer
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Nitroaromatics
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Film sensor
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Aqueous phase
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Físico-Química, Ciencia de los Polímeros, Electroquímica
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Ciencias Químicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Diphenylanthrylene and diphenylfluorene-based segmented conjugated polymer films as fluorescent chemosensors for nitroaromatics in aqueous solution
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-04-02T15:02:44Z
dc.journal.volume
203
dc.journal.pagination
612-620
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: del Rosso, Pablo Gabriel. Universidad Nacional del Sur. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina
dc.description.fil
Fil: Romagnoli, Maria Jose. Universidad Nacional del Sur. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina
dc.description.fil
Fil: Almassio, Marcela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina. Universidad Nacional del Sur. Departamento de Química; Argentina
dc.description.fil
Fil: Barbero, César Alfredo. Universidad Nacional de Rio Cuarto. Facultad de Cs.exactas Fisicoquimicas y Naturales. Instituto de Investigaciones En Tecnologias Energeticas y Materiales Avanzados. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Cordoba. Instituto de Investigaciones En Tecnologias Energeticas y Materiales Avanzados.; Argentina
dc.description.fil
Fil: Garay, Raúl Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Química del Sur. Universidad Nacional del Sur. Departamento de Química. Instituto de Química del Sur; Argentina. Universidad Nacional del Sur. Departamento de Química; Argentina
dc.journal.title
Sensors and Actuators B: Chemical
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/journal/09254005/203
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.snb.2014.07.032
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