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
- Institución
- Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
- OAI Identificador
- oai:digital.cic.gba.gob.ar:11746/10595
Ver los metadatos del registro completo
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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 |
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CIC Digital (CICBA) |
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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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13.070432 |