Solid-state sensory properties of Calix-Poly(Phenylene Ethynylene)s toward nitroaromatic explosives

Detalhes bibliográficos
Autor(a) principal: Costa, Alexandra
Data de Publicação: 2012
Outros Autores: Pinto, Hugo D., Ferreira, Luís F. V., Prata, José Virgílio
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.21/5122
Resumo: This study is primarily focused in establishing the solid-state sensory abilities of several luminescent polymeric calix[4]arene-based materials toward selected nitroaromatic compounds (NACs), creating the foundations for their future application as high performance materials for detection of high explosives. The phenylene ethynylene-type polymers possessing bis-calix[4]arene scaffolds in their core were designed to take advantage of the known recognition abilities of calixarene compounds toward neutral guests, particularly in solid-state, therefore providing enhanced sensitivity and selectivity in the sensing of a given analyte. It was found that all the calix[4]arene-poly(para-phenylene ethynylene)s here reported displayed high sensitivities toward the detection of nitrobenzene, 2,4-dinitrotoluene and 2,4,6-trinitrotoluene (TNT). Particularly effective and significant was the response of the films (25-60 nm of thickness) upon exposure to TNT vapor (10 ppb): over 50% of fluorescence quenching was achieved in only 10 s. In contrast, a model polymer lacking the calixarene units showed only reduced quenching activity for the same set of analytes, clearly highlighting the relevance of the macrocyclics in promoting the signaling of the transduction event. The films exhibited high photostability (less than 0.5% loss of fluorescence intensity up to 15 min of continuous irradiation) and the fluorescence quenching sensitivity could be fully recovered after exposure of the quenched films to saturated vapors of hydrazine (the initial fluorescence intensities were usually recovered within 2-5 min of exposure to hydrazine).
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spelling Solid-state sensory properties of Calix-Poly(Phenylene Ethynylene)s toward nitroaromatic explosivesCalixarenesConjugated PolymersPhenylene EthynyleneFluorescenceSolid-State SensorsExplosivesFluorescent Conjugated PolymersChemical SensorsTNT ChemosensorsFilmsPhotoluminescenceTrinitrotolueneCopolymerDesignThis study is primarily focused in establishing the solid-state sensory abilities of several luminescent polymeric calix[4]arene-based materials toward selected nitroaromatic compounds (NACs), creating the foundations for their future application as high performance materials for detection of high explosives. The phenylene ethynylene-type polymers possessing bis-calix[4]arene scaffolds in their core were designed to take advantage of the known recognition abilities of calixarene compounds toward neutral guests, particularly in solid-state, therefore providing enhanced sensitivity and selectivity in the sensing of a given analyte. It was found that all the calix[4]arene-poly(para-phenylene ethynylene)s here reported displayed high sensitivities toward the detection of nitrobenzene, 2,4-dinitrotoluene and 2,4,6-trinitrotoluene (TNT). Particularly effective and significant was the response of the films (25-60 nm of thickness) upon exposure to TNT vapor (10 ppb): over 50% of fluorescence quenching was achieved in only 10 s. In contrast, a model polymer lacking the calixarene units showed only reduced quenching activity for the same set of analytes, clearly highlighting the relevance of the macrocyclics in promoting the signaling of the transduction event. The films exhibited high photostability (less than 0.5% loss of fluorescence intensity up to 15 min of continuous irradiation) and the fluorescence quenching sensitivity could be fully recovered after exposure of the quenched films to saturated vapors of hydrazine (the initial fluorescence intensities were usually recovered within 2-5 min of exposure to hydrazine).Elsevier Science SARCIPLCosta, AlexandraPinto, Hugo D.Ferreira, Luís F. V.Prata, José Virgílio2015-09-08T15:31:40Z2012-01-032012-01-03T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfapplication/pdfhttp://hdl.handle.net/10400.21/5122engCOSTA, A. I.; [et al] – Solid-state sensory properties of Calix-Poly(Phenylene Ethynylene)s toward nitroaromatic explosives. Sensors and Actuators B-Chemical. ISSN: 0925-4005. Vol. 16, nr. 1 (2012), pp. 702-7130925-400510.1016/j.snb.2011.11.017metadata only accessinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-08-03T09:48:05Zoai:repositorio.ipl.pt:10400.21/5122Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:14:26.775600Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Solid-state sensory properties of Calix-Poly(Phenylene Ethynylene)s toward nitroaromatic explosives
title Solid-state sensory properties of Calix-Poly(Phenylene Ethynylene)s toward nitroaromatic explosives
spellingShingle Solid-state sensory properties of Calix-Poly(Phenylene Ethynylene)s toward nitroaromatic explosives
Costa, Alexandra
Calixarenes
Conjugated Polymers
Phenylene Ethynylene
Fluorescence
Solid-State Sensors
Explosives
Fluorescent Conjugated Polymers
Chemical Sensors
TNT Chemosensors
Films
Photoluminescence
Trinitrotoluene
Copolymer
Design
title_short Solid-state sensory properties of Calix-Poly(Phenylene Ethynylene)s toward nitroaromatic explosives
title_full Solid-state sensory properties of Calix-Poly(Phenylene Ethynylene)s toward nitroaromatic explosives
title_fullStr Solid-state sensory properties of Calix-Poly(Phenylene Ethynylene)s toward nitroaromatic explosives
title_full_unstemmed Solid-state sensory properties of Calix-Poly(Phenylene Ethynylene)s toward nitroaromatic explosives
title_sort Solid-state sensory properties of Calix-Poly(Phenylene Ethynylene)s toward nitroaromatic explosives
author Costa, Alexandra
author_facet Costa, Alexandra
Pinto, Hugo D.
Ferreira, Luís F. V.
Prata, José Virgílio
author_role author
author2 Pinto, Hugo D.
Ferreira, Luís F. V.
Prata, José Virgílio
author2_role author
author
author
dc.contributor.none.fl_str_mv RCIPL
dc.contributor.author.fl_str_mv Costa, Alexandra
Pinto, Hugo D.
Ferreira, Luís F. V.
Prata, José Virgílio
dc.subject.por.fl_str_mv Calixarenes
Conjugated Polymers
Phenylene Ethynylene
Fluorescence
Solid-State Sensors
Explosives
Fluorescent Conjugated Polymers
Chemical Sensors
TNT Chemosensors
Films
Photoluminescence
Trinitrotoluene
Copolymer
Design
topic Calixarenes
Conjugated Polymers
Phenylene Ethynylene
Fluorescence
Solid-State Sensors
Explosives
Fluorescent Conjugated Polymers
Chemical Sensors
TNT Chemosensors
Films
Photoluminescence
Trinitrotoluene
Copolymer
Design
description This study is primarily focused in establishing the solid-state sensory abilities of several luminescent polymeric calix[4]arene-based materials toward selected nitroaromatic compounds (NACs), creating the foundations for their future application as high performance materials for detection of high explosives. The phenylene ethynylene-type polymers possessing bis-calix[4]arene scaffolds in their core were designed to take advantage of the known recognition abilities of calixarene compounds toward neutral guests, particularly in solid-state, therefore providing enhanced sensitivity and selectivity in the sensing of a given analyte. It was found that all the calix[4]arene-poly(para-phenylene ethynylene)s here reported displayed high sensitivities toward the detection of nitrobenzene, 2,4-dinitrotoluene and 2,4,6-trinitrotoluene (TNT). Particularly effective and significant was the response of the films (25-60 nm of thickness) upon exposure to TNT vapor (10 ppb): over 50% of fluorescence quenching was achieved in only 10 s. In contrast, a model polymer lacking the calixarene units showed only reduced quenching activity for the same set of analytes, clearly highlighting the relevance of the macrocyclics in promoting the signaling of the transduction event. The films exhibited high photostability (less than 0.5% loss of fluorescence intensity up to 15 min of continuous irradiation) and the fluorescence quenching sensitivity could be fully recovered after exposure of the quenched films to saturated vapors of hydrazine (the initial fluorescence intensities were usually recovered within 2-5 min of exposure to hydrazine).
publishDate 2012
dc.date.none.fl_str_mv 2012-01-03
2012-01-03T00:00:00Z
2015-09-08T15:31:40Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.21/5122
url http://hdl.handle.net/10400.21/5122
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv COSTA, A. I.; [et al] – Solid-state sensory properties of Calix-Poly(Phenylene Ethynylene)s toward nitroaromatic explosives. Sensors and Actuators B-Chemical. ISSN: 0925-4005. Vol. 16, nr. 1 (2012), pp. 702-713
0925-4005
10.1016/j.snb.2011.11.017
dc.rights.driver.fl_str_mv metadata only access
info:eu-repo/semantics/openAccess
rights_invalid_str_mv metadata only access
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science SA
publisher.none.fl_str_mv Elsevier Science SA
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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