Mechanistic Insights into the Nb2O5 Catalyzed In Situ Condensation of a Fluorescent Halochromic Assembly

Autores
Impellizzeri, Stefania; Simoncelli, Sabrina; Fasciani, Chiara; Marin, M. Luisa; Hallett Tapley, Geniece L.; Hodgson, Gregory K.; Scaiano, Juan C.
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Solid niobium oxides (Nb2O5·nH2O) and niobium phosphate were used as heterogeneous acid catalysts to promote the condensation between a switchable oxazine and a fluorescent coumarin in an aprotic solvent. The catalysts were found to promote the generation of an active methylene from the enamine-based portion of the oxazine, which was followed by a nucleophilic attack on the aldehyde functionality of the coumarin reagent. In the resulting system, the emission of the conjugated fluorophore can be observed at 670 nm and, thus, the processes occurring at the catalyst surface can be monitored in real time by total internal reflection fluorescence microscopy (TIRFM).
Fil: Impellizzeri, Stefania . University of Ottawa. Centre for Catalysis Research and Innovation. Department of Chemistry; Canadá
Fil: Simoncelli, Sabrina. University of Ottawa. Centre for Catalysis Research and Innovation. Department of Chemistry; Canadá. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Centro de Investigaciones en Bionanociencias "Elizabeth Jares Erijman"; Argentina
Fil: Fasciani, Chiara. University of Ottawa. Centre for Catalysis Research and Innovation. Department of Chemistry; Canadá
Fil: Marin, M. Luisa. University of Ottawa. Centre for Catalysis Research and Innovation. Department of Chemistry; Canadá. Universitat Politècnica de València. Instituto Universitario Mixto de Tecnología Química; España
Fil: Hallett Tapley, Geniece L.. University of Ottawa. Centre for Catalysis Research and Innovation. Department of Chemistry; Canadá
Fil: Hodgson, Gregory K.. University of Ottawa. Centre for Catalysis Research and Innovation. Department of Chemistry; Canadá
Fil: Scaiano, Juan C.. University of Ottawa. Centre for Catalysis Research and Innovation. Department of Chemistry; Canadá
Materia
Catalysis
Niobium Oxides
Oxazine
Single Molecule
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/4101
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/4101
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Mechanistic Insights into the Nb2O5 Catalyzed In Situ Condensation of a Fluorescent Halochromic AssemblyImpellizzeri, Stefania Simoncelli, SabrinaFasciani, ChiaraMarin, M. LuisaHallett Tapley, Geniece L.Hodgson, Gregory K.Scaiano, Juan C.CatalysisNiobium OxidesOxazineSingle Moleculehttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Solid niobium oxides (Nb2O5·nH2O) and niobium phosphate were used as heterogeneous acid catalysts to promote the condensation between a switchable oxazine and a fluorescent coumarin in an aprotic solvent. The catalysts were found to promote the generation of an active methylene from the enamine-based portion of the oxazine, which was followed by a nucleophilic attack on the aldehyde functionality of the coumarin reagent. In the resulting system, the emission of the conjugated fluorophore can be observed at 670 nm and, thus, the processes occurring at the catalyst surface can be monitored in real time by total internal reflection fluorescence microscopy (TIRFM).Fil: Impellizzeri, Stefania . University of Ottawa. Centre for Catalysis Research and Innovation. Department of Chemistry; CanadáFil: Simoncelli, Sabrina. University of Ottawa. Centre for Catalysis Research and Innovation. Department of Chemistry; Canadá. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Centro de Investigaciones en Bionanociencias "Elizabeth Jares Erijman"; ArgentinaFil: Fasciani, Chiara. University of Ottawa. Centre for Catalysis Research and Innovation. Department of Chemistry; CanadáFil: Marin, M. Luisa. University of Ottawa. Centre for Catalysis Research and Innovation. Department of Chemistry; Canadá. Universitat Politècnica de València. Instituto Universitario Mixto de Tecnología Química; EspañaFil: Hallett Tapley, Geniece L.. University of Ottawa. Centre for Catalysis Research and Innovation. Department of Chemistry; CanadáFil: Hodgson, Gregory K.. University of Ottawa. Centre for Catalysis Research and Innovation. Department of Chemistry; CanadáFil: Scaiano, Juan C.. University of Ottawa. Centre for Catalysis Research and Innovation. Department of Chemistry; CanadáRoyal Society of Chemistry2014-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/4101Impellizzeri, Stefania ; Simoncelli, Sabrina; Fasciani, Chiara; Marin, M. Luisa; Hallett Tapley, Geniece L.; et al.; Mechanistic Insights into the Nb2O5 Catalyzed In Situ Condensation of a Fluorescent Halochromic Assembly; Royal Society of Chemistry; Catalysis Science & Technology; 5; 1; 8-2014; 169-1752044-4753enginfo:eu-repo/semantics/altIdentifier/url/http://pubs.rsc.org/en/content/articlelanding/cy/2015/c4cy00703d#!divAbstractinfo:eu-repo/semantics/altIdentifier/doi/DOI:10.1039/C4CY00703Dinfo:eu-repo/semantics/altIdentifier/issn/2044-4753info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:59:04Zoai:ri.conicet.gov.ar:11336/4101instacron: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:34982025-10-15 14:59:05.085CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Mechanistic Insights into the Nb2O5 Catalyzed In Situ Condensation of a Fluorescent Halochromic Assembly
title Mechanistic Insights into the Nb2O5 Catalyzed In Situ Condensation of a Fluorescent Halochromic Assembly
spellingShingle Mechanistic Insights into the Nb2O5 Catalyzed In Situ Condensation of a Fluorescent Halochromic Assembly
Impellizzeri, Stefania
Catalysis
Niobium Oxides
Oxazine
Single Molecule
title_short Mechanistic Insights into the Nb2O5 Catalyzed In Situ Condensation of a Fluorescent Halochromic Assembly
title_full Mechanistic Insights into the Nb2O5 Catalyzed In Situ Condensation of a Fluorescent Halochromic Assembly
title_fullStr Mechanistic Insights into the Nb2O5 Catalyzed In Situ Condensation of a Fluorescent Halochromic Assembly
title_full_unstemmed Mechanistic Insights into the Nb2O5 Catalyzed In Situ Condensation of a Fluorescent Halochromic Assembly
title_sort Mechanistic Insights into the Nb2O5 Catalyzed In Situ Condensation of a Fluorescent Halochromic Assembly
dc.creator.none.fl_str_mv Impellizzeri, Stefania
Simoncelli, Sabrina
Fasciani, Chiara
Marin, M. Luisa
Hallett Tapley, Geniece L.
Hodgson, Gregory K.
Scaiano, Juan C.
author Impellizzeri, Stefania
author_facet Impellizzeri, Stefania
Simoncelli, Sabrina
Fasciani, Chiara
Marin, M. Luisa
Hallett Tapley, Geniece L.
Hodgson, Gregory K.
Scaiano, Juan C.
author_role author
author2 Simoncelli, Sabrina
Fasciani, Chiara
Marin, M. Luisa
Hallett Tapley, Geniece L.
Hodgson, Gregory K.
Scaiano, Juan C.
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Catalysis
Niobium Oxides
Oxazine
Single Molecule
topic Catalysis
Niobium Oxides
Oxazine
Single Molecule
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Solid niobium oxides (Nb2O5·nH2O) and niobium phosphate were used as heterogeneous acid catalysts to promote the condensation between a switchable oxazine and a fluorescent coumarin in an aprotic solvent. The catalysts were found to promote the generation of an active methylene from the enamine-based portion of the oxazine, which was followed by a nucleophilic attack on the aldehyde functionality of the coumarin reagent. In the resulting system, the emission of the conjugated fluorophore can be observed at 670 nm and, thus, the processes occurring at the catalyst surface can be monitored in real time by total internal reflection fluorescence microscopy (TIRFM).
Fil: Impellizzeri, Stefania . University of Ottawa. Centre for Catalysis Research and Innovation. Department of Chemistry; Canadá
Fil: Simoncelli, Sabrina. University of Ottawa. Centre for Catalysis Research and Innovation. Department of Chemistry; Canadá. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Centro de Investigaciones en Bionanociencias "Elizabeth Jares Erijman"; Argentina
Fil: Fasciani, Chiara. University of Ottawa. Centre for Catalysis Research and Innovation. Department of Chemistry; Canadá
Fil: Marin, M. Luisa. University of Ottawa. Centre for Catalysis Research and Innovation. Department of Chemistry; Canadá. Universitat Politècnica de València. Instituto Universitario Mixto de Tecnología Química; España
Fil: Hallett Tapley, Geniece L.. University of Ottawa. Centre for Catalysis Research and Innovation. Department of Chemistry; Canadá
Fil: Hodgson, Gregory K.. University of Ottawa. Centre for Catalysis Research and Innovation. Department of Chemistry; Canadá
Fil: Scaiano, Juan C.. University of Ottawa. Centre for Catalysis Research and Innovation. Department of Chemistry; Canadá
description Solid niobium oxides (Nb2O5·nH2O) and niobium phosphate were used as heterogeneous acid catalysts to promote the condensation between a switchable oxazine and a fluorescent coumarin in an aprotic solvent. The catalysts were found to promote the generation of an active methylene from the enamine-based portion of the oxazine, which was followed by a nucleophilic attack on the aldehyde functionality of the coumarin reagent. In the resulting system, the emission of the conjugated fluorophore can be observed at 670 nm and, thus, the processes occurring at the catalyst surface can be monitored in real time by total internal reflection fluorescence microscopy (TIRFM).
publishDate 2014
dc.date.none.fl_str_mv 2014-08
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/11336/4101
Impellizzeri, Stefania ; Simoncelli, Sabrina; Fasciani, Chiara; Marin, M. Luisa; Hallett Tapley, Geniece L.; et al.; Mechanistic Insights into the Nb2O5 Catalyzed In Situ Condensation of a Fluorescent Halochromic Assembly; Royal Society of Chemistry; Catalysis Science & Technology; 5; 1; 8-2014; 169-175
2044-4753
url http://hdl.handle.net/11336/4101
identifier_str_mv Impellizzeri, Stefania ; Simoncelli, Sabrina; Fasciani, Chiara; Marin, M. Luisa; Hallett Tapley, Geniece L.; et al.; Mechanistic Insights into the Nb2O5 Catalyzed In Situ Condensation of a Fluorescent Halochromic Assembly; Royal Society of Chemistry; Catalysis Science & Technology; 5; 1; 8-2014; 169-175
2044-4753
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://pubs.rsc.org/en/content/articlelanding/cy/2015/c4cy00703d#!divAbstract
info:eu-repo/semantics/altIdentifier/doi/DOI:10.1039/C4CY00703D
info:eu-repo/semantics/altIdentifier/issn/2044-4753
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Royal Society of Chemistry
publisher.none.fl_str_mv Royal Society of Chemistry
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
_version_ 1846083131927429120
score 13.216834

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