Cucurbit[6]uril nanocavity as an enhanced spectrofluorimetric method for the determination of pyrene

Autores
Sueldo Occello, Valeria Noemi; Veglia, Alicia Viviana
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The effect of the addition of macrocyclic host cucurbit[6]uril (CB6) on the photophysical properties of polycyclic aromatic hydrocarbon pyrene (PYR) was analyzed. The fluorescence emission spectra of the aromatic compound were determined at 25.0°C in different acidic media (HCl 18%, w/v, or HCOOH 55%, w/v) with and without CB6. A significant enhancement in the fluorescence signals in the presence of CB6 was observed. The average values of the association constant (KA) for the 1:1 stoichiometry complex and the relative fluorescence quantum yield ratio between the complexed and free PYR (φPYR-CB6/φPYR) in acidic media were (4.0±0.5)×102M-1 and (5.7±0.2), respectively.The analytical parameters improved in the presence of CB6. The relative decrease in the limit of detection was 92%. The matrix effect was evaluated in fortified samples of tap water and tea extracts. Apparent recoveries obtained by the proposed method in tap water and tea extracts were (82-103)% and (89-99)%, respectively. Selectivity studies with inorganic and organic species were performed. The method is rapid, direct, selective and simple. © 2011 Elsevier B.V.
Fil: Sueldo Occello, Valeria Noemi. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Veglia, Alicia Viviana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Materia
Cucurbituril
Fluorescence
Nanosensor
Polycyclic Aromatic Hydrocarbons
Pyrene
Supramolecular
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/66867
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/66867
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Cucurbit[6]uril nanocavity as an enhanced spectrofluorimetric method for the determination of pyreneSueldo Occello, Valeria NoemiVeglia, Alicia VivianaCucurbiturilFluorescenceNanosensorPolycyclic Aromatic HydrocarbonsPyreneSupramolecularhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The effect of the addition of macrocyclic host cucurbit[6]uril (CB6) on the photophysical properties of polycyclic aromatic hydrocarbon pyrene (PYR) was analyzed. The fluorescence emission spectra of the aromatic compound were determined at 25.0°C in different acidic media (HCl 18%, w/v, or HCOOH 55%, w/v) with and without CB6. A significant enhancement in the fluorescence signals in the presence of CB6 was observed. The average values of the association constant (KA) for the 1:1 stoichiometry complex and the relative fluorescence quantum yield ratio between the complexed and free PYR (φPYR-CB6/φPYR) in acidic media were (4.0±0.5)×102M-1 and (5.7±0.2), respectively.The analytical parameters improved in the presence of CB6. The relative decrease in the limit of detection was 92%. The matrix effect was evaluated in fortified samples of tap water and tea extracts. Apparent recoveries obtained by the proposed method in tap water and tea extracts were (82-103)% and (89-99)%, respectively. Selectivity studies with inorganic and organic species were performed. The method is rapid, direct, selective and simple. © 2011 Elsevier B.V.Fil: Sueldo Occello, Valeria Noemi. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaFil: Veglia, Alicia Viviana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaElsevier Science2011-01-19info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/66867Sueldo Occello, Valeria Noemi; Veglia, Alicia Viviana; Cucurbit[6]uril nanocavity as an enhanced spectrofluorimetric method for the determination of pyrene; Elsevier Science; Analytica Chimica Acta; 689; 1; 19-1-2011; 97-1020003-26701873-4324CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.aca.2011.01.027info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0003267011000894info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:33:18Zoai:ri.conicet.gov.ar:11336/66867instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:33:19.074CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Cucurbit[6]uril nanocavity as an enhanced spectrofluorimetric method for the determination of pyrene
title Cucurbit[6]uril nanocavity as an enhanced spectrofluorimetric method for the determination of pyrene
spellingShingle Cucurbit[6]uril nanocavity as an enhanced spectrofluorimetric method for the determination of pyrene
Sueldo Occello, Valeria Noemi
Cucurbituril
Fluorescence
Nanosensor
Polycyclic Aromatic Hydrocarbons
Pyrene
Supramolecular
title_short Cucurbit[6]uril nanocavity as an enhanced spectrofluorimetric method for the determination of pyrene
title_full Cucurbit[6]uril nanocavity as an enhanced spectrofluorimetric method for the determination of pyrene
title_fullStr Cucurbit[6]uril nanocavity as an enhanced spectrofluorimetric method for the determination of pyrene
title_full_unstemmed Cucurbit[6]uril nanocavity as an enhanced spectrofluorimetric method for the determination of pyrene
title_sort Cucurbit[6]uril nanocavity as an enhanced spectrofluorimetric method for the determination of pyrene
dc.creator.none.fl_str_mv Sueldo Occello, Valeria Noemi
Veglia, Alicia Viviana
author Sueldo Occello, Valeria Noemi
author_facet Sueldo Occello, Valeria Noemi
Veglia, Alicia Viviana
author_role author
author2 Veglia, Alicia Viviana
author2_role author
dc.subject.none.fl_str_mv Cucurbituril
Fluorescence
Nanosensor
Polycyclic Aromatic Hydrocarbons
Pyrene
Supramolecular
topic Cucurbituril
Fluorescence
Nanosensor
Polycyclic Aromatic Hydrocarbons
Pyrene
Supramolecular
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The effect of the addition of macrocyclic host cucurbit[6]uril (CB6) on the photophysical properties of polycyclic aromatic hydrocarbon pyrene (PYR) was analyzed. The fluorescence emission spectra of the aromatic compound were determined at 25.0°C in different acidic media (HCl 18%, w/v, or HCOOH 55%, w/v) with and without CB6. A significant enhancement in the fluorescence signals in the presence of CB6 was observed. The average values of the association constant (KA) for the 1:1 stoichiometry complex and the relative fluorescence quantum yield ratio between the complexed and free PYR (φPYR-CB6/φPYR) in acidic media were (4.0±0.5)×102M-1 and (5.7±0.2), respectively.The analytical parameters improved in the presence of CB6. The relative decrease in the limit of detection was 92%. The matrix effect was evaluated in fortified samples of tap water and tea extracts. Apparent recoveries obtained by the proposed method in tap water and tea extracts were (82-103)% and (89-99)%, respectively. Selectivity studies with inorganic and organic species were performed. The method is rapid, direct, selective and simple. © 2011 Elsevier B.V.
Fil: Sueldo Occello, Valeria Noemi. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Veglia, Alicia Viviana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
description The effect of the addition of macrocyclic host cucurbit[6]uril (CB6) on the photophysical properties of polycyclic aromatic hydrocarbon pyrene (PYR) was analyzed. The fluorescence emission spectra of the aromatic compound were determined at 25.0°C in different acidic media (HCl 18%, w/v, or HCOOH 55%, w/v) with and without CB6. A significant enhancement in the fluorescence signals in the presence of CB6 was observed. The average values of the association constant (KA) for the 1:1 stoichiometry complex and the relative fluorescence quantum yield ratio between the complexed and free PYR (φPYR-CB6/φPYR) in acidic media were (4.0±0.5)×102M-1 and (5.7±0.2), respectively.The analytical parameters improved in the presence of CB6. The relative decrease in the limit of detection was 92%. The matrix effect was evaluated in fortified samples of tap water and tea extracts. Apparent recoveries obtained by the proposed method in tap water and tea extracts were (82-103)% and (89-99)%, respectively. Selectivity studies with inorganic and organic species were performed. The method is rapid, direct, selective and simple. © 2011 Elsevier B.V.
publishDate 2011
dc.date.none.fl_str_mv 2011-01-19
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 http://hdl.handle.net/11336/66867
Sueldo Occello, Valeria Noemi; Veglia, Alicia Viviana; Cucurbit[6]uril nanocavity as an enhanced spectrofluorimetric method for the determination of pyrene; Elsevier Science; Analytica Chimica Acta; 689; 1; 19-1-2011; 97-102
0003-2670
1873-4324
CONICET Digital
CONICET
url http://hdl.handle.net/11336/66867
identifier_str_mv Sueldo Occello, Valeria Noemi; Veglia, Alicia Viviana; Cucurbit[6]uril nanocavity as an enhanced spectrofluorimetric method for the determination of pyrene; Elsevier Science; Analytica Chimica Acta; 689; 1; 19-1-2011; 97-102
0003-2670
1873-4324
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.aca.2011.01.027
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0003267011000894
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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