Photochemical reaction mechanisms and kinetics with molecular nanocrystals: surface quenching of triplet benzophenone nanocrystals

Organic molecular nanocrystals suspended in water are useful when studying reactions that occur in the solid state because they retain not only the reactive and supramolecular properties of bulk crystals, but are also amenable to transmission spectroscopy. Having previously studied the triplet state...

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Autores: Simoncelli, Sabrina, Kuzmanich, Gregory, Gard, Matthew N., Garcia Garibay, Miguel A.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2010
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/71932
Acceso en línea:http://hdl.handle.net/11336/71932
Access Level:acceso abierto
Palabra clave:Benzophenone
Nanocrystalline
Nanosecond Flash Photolysis
Particle Size
Solid-State Reaction Kinetics
Surface Quenching
https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
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spelling Photochemical reaction mechanisms and kinetics with molecular nanocrystals: surface quenching of triplet benzophenone nanocrystalsSimoncelli, SabrinaKuzmanich, GregoryGard, Matthew N.Garcia Garibay, Miguel A.BenzophenoneNanocrystallineNanosecond Flash PhotolysisParticle SizeSolid-State Reaction KineticsSurface Quenchinghttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Organic molecular nanocrystals suspended in water are useful when studying reactions that occur in the solid state because they retain not only the reactive and supramolecular properties of bulk crystals, but are also amenable to transmission spectroscopy. Having previously studied the triplet state of benzophenone nanocrystals by laser flash photolysis transmission spectroscopy, we now report nanosecond experiments in the presence of several possible quenchers: anionic and cationic surfactants, dissolved oxygen, and as a function of solvent deuteration (H2O and D2O). After finding these to have no effect, several anionic quenchers (IS, BrS, and NS3) were tested by Stern-Volmer analysis. Significant correlation between the quenching rates in solution and in nanocrystals suggests that the electronic excitation is accessible to quenchers at the surface. © 2010 John Wiley & Sons, Ltd.Fil: Simoncelli, Sabrina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. University of California at Los Angeles; Estados Unidos. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Inorgánica, Analítica y Química Física; ArgentinaFil: Kuzmanich, Gregory. University of California at Los Angeles; Estados UnidosFil: Gard, Matthew N.. University of California at Los Angeles; Estados UnidosFil: Garcia Garibay, Miguel A.. University of California at Los Angeles; Estados UnidosJohn Wiley & Sons Ltd2010-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/71932Simoncelli, Sabrina; Kuzmanich, Gregory; Gard, Matthew N.; Garcia Garibay, Miguel A.; Photochemical reaction mechanisms and kinetics with molecular nanocrystals: surface quenching of triplet benzophenone nanocrystals; John Wiley & Sons Ltd; Journal Of Physical Organic Chemistry; 23; 4; 4-2010; 376-3810894-3230CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/full/10.1002/poc.1659info:eu-repo/semantics/altIdentifier/doi/10.1002/poc.1659info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T13:59:45Zoai:ri.conicet.gov.ar:11336/71932instacron: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:34982024-05-08 13:59:45.739CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Photochemical reaction mechanisms and kinetics with molecular nanocrystals: surface quenching of triplet benzophenone nanocrystals
title Photochemical reaction mechanisms and kinetics with molecular nanocrystals: surface quenching of triplet benzophenone nanocrystals
spellingShingle Photochemical reaction mechanisms and kinetics with molecular nanocrystals: surface quenching of triplet benzophenone nanocrystals
Simoncelli, Sabrina
Benzophenone
Nanocrystalline
Nanosecond Flash Photolysis
Particle Size
Solid-State Reaction Kinetics
Surface Quenching
https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
title_short Photochemical reaction mechanisms and kinetics with molecular nanocrystals: surface quenching of triplet benzophenone nanocrystals
title_full Photochemical reaction mechanisms and kinetics with molecular nanocrystals: surface quenching of triplet benzophenone nanocrystals
title_fullStr Photochemical reaction mechanisms and kinetics with molecular nanocrystals: surface quenching of triplet benzophenone nanocrystals
title_full_unstemmed Photochemical reaction mechanisms and kinetics with molecular nanocrystals: surface quenching of triplet benzophenone nanocrystals
title_sort Photochemical reaction mechanisms and kinetics with molecular nanocrystals: surface quenching of triplet benzophenone nanocrystals
dc.creator.none.fl_str_mv Simoncelli, Sabrina
Kuzmanich, Gregory
Gard, Matthew N.
Garcia Garibay, Miguel A.
author Simoncelli, Sabrina
author_facet Simoncelli, Sabrina
Kuzmanich, Gregory
Gard, Matthew N.
Garcia Garibay, Miguel A.
author_role author
author2 Kuzmanich, Gregory
Gard, Matthew N.
Garcia Garibay, Miguel A.
author2_role author
author
author
dc.subject.none.fl_str_mv Benzophenone
Nanocrystalline
Nanosecond Flash Photolysis
Particle Size
Solid-State Reaction Kinetics
Surface Quenching
https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
topic Benzophenone
Nanocrystalline
Nanosecond Flash Photolysis
Particle Size
Solid-State Reaction Kinetics
Surface Quenching
https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
description Organic molecular nanocrystals suspended in water are useful when studying reactions that occur in the solid state because they retain not only the reactive and supramolecular properties of bulk crystals, but are also amenable to transmission spectroscopy. Having previously studied the triplet state of benzophenone nanocrystals by laser flash photolysis transmission spectroscopy, we now report nanosecond experiments in the presence of several possible quenchers: anionic and cationic surfactants, dissolved oxygen, and as a function of solvent deuteration (H2O and D2O). After finding these to have no effect, several anionic quenchers (IS, BrS, and NS3) were tested by Stern-Volmer analysis. Significant correlation between the quenching rates in solution and in nanocrystals suggests that the electronic excitation is accessible to quenchers at the surface. © 2010 John Wiley & Sons, Ltd.
publishDate 2010
dc.date.none.fl_str_mv 2010-04
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/11336/71932
Simoncelli, Sabrina; Kuzmanich, Gregory; Gard, Matthew N.; Garcia Garibay, Miguel A.; Photochemical reaction mechanisms and kinetics with molecular nanocrystals: surface quenching of triplet benzophenone nanocrystals; John Wiley & Sons Ltd; Journal Of Physical Organic Chemistry; 23; 4; 4-2010; 376-381
0894-3230
CONICET Digital
CONICET
url http://hdl.handle.net/11336/71932
identifier_str_mv Simoncelli, Sabrina; Kuzmanich, Gregory; Gard, Matthew N.; Garcia Garibay, Miguel A.; Photochemical reaction mechanisms and kinetics with molecular nanocrystals: surface quenching of triplet benzophenone nanocrystals; John Wiley & Sons Ltd; Journal Of Physical Organic Chemistry; 23; 4; 4-2010; 376-381
0894-3230
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/full/10.1002/poc.1659
info:eu-repo/semantics/altIdentifier/doi/10.1002/poc.1659
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
dc.publisher.none.fl_str_mv John Wiley & Sons Ltd
publisher.none.fl_str_mv John Wiley & Sons Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
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 15,81155

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