Photoactive thin films of terphenylene-based amorphous polymers: Synthesis, electrooptical properties, and role of photoquenching and inner filter effects in the chemosensing of ni...

Autores
Garay, Raúl O.; Del Rosso, Pablo G.; Romagnoli, Maria J.; Almassio, Marcela Fabiana; Schvval, Ana Belén
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
New photoactive segmented conjugated polymers with terphenylene chromophores were synthesized, and the chemosensing abilities to detect nitroaromatics compounds (NACs) of the polymeric thin films were evaluated in aqueous media. The thin films are strongly fluorescent, amorphous with no aggregation of the chromophores in the solid state and sensitive towards NACs in water. Though true quenching occurring after diffusion of the NACs into the amorphous films contributes to the total response of these polymer films, quenching efficiencies of nitroaromatics are strongly influenced by additional inner filter effect contributions that could be used to increase the film response. Thus, to maximize the response of these polymers, it is convenient to use the shortest feasible λexc for trinitritoluene (TNT) and the longest feasible λexc for picric acid (PA). In the micromolar concentration region, the highly absorbing PA frequently has a stronger response than TNT due to the inner filter effects (IFE) contributions. However, we observed that the properties of the material, such as exciton mobility or quencher-polymer compatibilities, become more relevant to define the quenching efficiency at the nanomolar range; though the electrondonor capabilities of the chromophores have no bearing on quenching efficiency. So, the tuning of morphology and photophysical properties of the polymer by structural design should be complemented with a rational selection of experimental conditions, e.g., λexc, in order to enhance the response towards the NAC of interest.
Materia
Ciencias Químicas
Film chemosensor
Terphenylene choromophores
Fluorescence quenching
Nitroaromatic compounds
Aqueous phase
Segmented conjugated polymer
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
CIC Digital (CICBA)
Institución
Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
OAI Identificador
oai:digital.cic.gba.gob.ar:11746/10595

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network_acronym_str CICBA
repository_id_str 9441
network_name_str CIC Digital (CICBA)
spelling Photoactive thin films of terphenylene-based amorphous polymers: Synthesis, electrooptical properties, and role of photoquenching and inner filter effects in the chemosensing of nitroaromaticsGaray, Raúl O.Del Rosso, Pablo G.Romagnoli, Maria J.Almassio, Marcela FabianaSchvval, Ana BelénCiencias QuímicasFilm chemosensorTerphenylene choromophoresFluorescence quenchingNitroaromatic compoundsAqueous phaseSegmented conjugated polymerNew photoactive segmented conjugated polymers with terphenylene chromophores were synthesized, and the chemosensing abilities to detect nitroaromatics compounds (NACs) of the polymeric thin films were evaluated in aqueous media. The thin films are strongly fluorescent, amorphous with no aggregation of the chromophores in the solid state and sensitive towards NACs in water. Though true quenching occurring after diffusion of the NACs into the amorphous films contributes to the total response of these polymer films, quenching efficiencies of nitroaromatics are strongly influenced by additional inner filter effect contributions that could be used to increase the film response. Thus, to maximize the response of these polymers, it is convenient to use the shortest feasible λexc for trinitritoluene (TNT) and the longest feasible λexc for picric acid (PA). In the micromolar concentration region, the highly absorbing PA frequently has a stronger response than TNT due to the inner filter effects (IFE) contributions. However, we observed that the properties of the material, such as exciton mobility or quencher-polymer compatibilities, become more relevant to define the quenching efficiency at the nanomolar range; though the electrondonor capabilities of the chromophores have no bearing on quenching efficiency. So, the tuning of morphology and photophysical properties of the polymer by structural design should be complemented with a rational selection of experimental conditions, e.g., λexc, in order to enhance the response towards the NAC of interest.2019-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttps://digital.cic.gba.gob.ar/handle/11746/10595enginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jphotochem.2019.112016 Rinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/reponame:CIC Digital (CICBA)instname:Comisión de Investigaciones Científicas de la Provincia de Buenos Airesinstacron:CICBA2025-09-29T13:39:53Zoai:digital.cic.gba.gob.ar:11746/10595Institucionalhttp://digital.cic.gba.gob.arOrganismo científico-tecnológicoNo correspondehttp://digital.cic.gba.gob.ar/oai/snrdmarisa.degiusti@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:94412025-09-29 13:39:53.351CIC Digital (CICBA) - Comisión de Investigaciones Científicas de la Provincia de Buenos Airesfalse
dc.title.none.fl_str_mv Photoactive thin films of terphenylene-based amorphous polymers: Synthesis, electrooptical properties, and role of photoquenching and inner filter effects in the chemosensing of nitroaromatics
title Photoactive thin films of terphenylene-based amorphous polymers: Synthesis, electrooptical properties, and role of photoquenching and inner filter effects in the chemosensing of nitroaromatics
spellingShingle Photoactive thin films of terphenylene-based amorphous polymers: Synthesis, electrooptical properties, and role of photoquenching and inner filter effects in the chemosensing of nitroaromatics
Garay, Raúl O.
Ciencias Químicas
Film chemosensor
Terphenylene choromophores
Fluorescence quenching
Nitroaromatic compounds
Aqueous phase
Segmented conjugated polymer
title_short Photoactive thin films of terphenylene-based amorphous polymers: Synthesis, electrooptical properties, and role of photoquenching and inner filter effects in the chemosensing of nitroaromatics
title_full Photoactive thin films of terphenylene-based amorphous polymers: Synthesis, electrooptical properties, and role of photoquenching and inner filter effects in the chemosensing of nitroaromatics
title_fullStr Photoactive thin films of terphenylene-based amorphous polymers: Synthesis, electrooptical properties, and role of photoquenching and inner filter effects in the chemosensing of nitroaromatics
title_full_unstemmed Photoactive thin films of terphenylene-based amorphous polymers: Synthesis, electrooptical properties, and role of photoquenching and inner filter effects in the chemosensing of nitroaromatics
title_sort Photoactive thin films of terphenylene-based amorphous polymers: Synthesis, electrooptical properties, and role of photoquenching and inner filter effects in the chemosensing of nitroaromatics
dc.creator.none.fl_str_mv Garay, Raúl O.
Del Rosso, Pablo G.
Romagnoli, Maria J.
Almassio, Marcela Fabiana
Schvval, Ana Belén
author Garay, Raúl O.
author_facet Garay, Raúl O.
Del Rosso, Pablo G.
Romagnoli, Maria J.
Almassio, Marcela Fabiana
Schvval, Ana Belén
author_role author
author2 Del Rosso, Pablo G.
Romagnoli, Maria J.
Almassio, Marcela Fabiana
Schvval, Ana Belén
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ciencias Químicas
Film chemosensor
Terphenylene choromophores
Fluorescence quenching
Nitroaromatic compounds
Aqueous phase
Segmented conjugated polymer
topic Ciencias Químicas
Film chemosensor
Terphenylene choromophores
Fluorescence quenching
Nitroaromatic compounds
Aqueous phase
Segmented conjugated polymer
dc.description.none.fl_txt_mv New photoactive segmented conjugated polymers with terphenylene chromophores were synthesized, and the chemosensing abilities to detect nitroaromatics compounds (NACs) of the polymeric thin films were evaluated in aqueous media. The thin films are strongly fluorescent, amorphous with no aggregation of the chromophores in the solid state and sensitive towards NACs in water. Though true quenching occurring after diffusion of the NACs into the amorphous films contributes to the total response of these polymer films, quenching efficiencies of nitroaromatics are strongly influenced by additional inner filter effect contributions that could be used to increase the film response. Thus, to maximize the response of these polymers, it is convenient to use the shortest feasible λexc for trinitritoluene (TNT) and the longest feasible λexc for picric acid (PA). In the micromolar concentration region, the highly absorbing PA frequently has a stronger response than TNT due to the inner filter effects (IFE) contributions. However, we observed that the properties of the material, such as exciton mobility or quencher-polymer compatibilities, become more relevant to define the quenching efficiency at the nanomolar range; though the electrondonor capabilities of the chromophores have no bearing on quenching efficiency. So, the tuning of morphology and photophysical properties of the polymer by structural design should be complemented with a rational selection of experimental conditions, e.g., λexc, in order to enhance the response towards the NAC of interest.
description New photoactive segmented conjugated polymers with terphenylene chromophores were synthesized, and the chemosensing abilities to detect nitroaromatics compounds (NACs) of the polymeric thin films were evaluated in aqueous media. The thin films are strongly fluorescent, amorphous with no aggregation of the chromophores in the solid state and sensitive towards NACs in water. Though true quenching occurring after diffusion of the NACs into the amorphous films contributes to the total response of these polymer films, quenching efficiencies of nitroaromatics are strongly influenced by additional inner filter effect contributions that could be used to increase the film response. Thus, to maximize the response of these polymers, it is convenient to use the shortest feasible λexc for trinitritoluene (TNT) and the longest feasible λexc for picric acid (PA). In the micromolar concentration region, the highly absorbing PA frequently has a stronger response than TNT due to the inner filter effects (IFE) contributions. However, we observed that the properties of the material, such as exciton mobility or quencher-polymer compatibilities, become more relevant to define the quenching efficiency at the nanomolar range; though the electrondonor capabilities of the chromophores have no bearing on quenching efficiency. So, the tuning of morphology and photophysical properties of the polymer by structural design should be complemented with a rational selection of experimental conditions, e.g., λexc, in order to enhance the response towards the NAC of interest.
publishDate 2019
dc.date.none.fl_str_mv 2019-11
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://digital.cic.gba.gob.ar/handle/11746/10595
url https://digital.cic.gba.gob.ar/handle/11746/10595
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jphotochem.2019.112016 R
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:CIC Digital (CICBA)
instname:Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
instacron:CICBA
reponame_str CIC Digital (CICBA)
collection CIC Digital (CICBA)
instname_str Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
instacron_str CICBA
institution CICBA
repository.name.fl_str_mv CIC Digital (CICBA) - Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
repository.mail.fl_str_mv marisa.degiusti@sedici.unlp.edu.ar
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