Photostability of a photochromic naphthopyran dye in different Sol-Gel prepared ormosil coatings

A photochromic naphthopyran derivative was embedded in sol-gel prepared thin ormosil films. The resulting samples show high transparency and exhibit a strong red colouration upon irradiation with UV light. The photostabil- ity of the photochromic molecules is strongly related to the nature of the em...

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Detalles Bibliográficos
Autores: Pardo, Rosario, Zayat, Marcos, Levy, David
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2006
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/343469
Acceso en línea:http://hdl.handle.net/10261/343469
Access Level:acceso abierto
Palabra clave:Photostability
Photochromic
Ormosil
Naphthopyran
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spelling Photostability of a photochromic naphthopyran dye in different Sol-Gel prepared ormosil coatingsPardo, RosarioZayat, MarcosLevy, DavidPhotostabilityPhotochromicOrmosilNaphthopyranA photochromic naphthopyran derivative was embedded in sol-gel prepared thin ormosil films. The resulting samples show high transparency and exhibit a strong red colouration upon irradiation with UV light. The photostabil- ity of the photochromic molecules is strongly related to the nature of the embedding ormosil matrix. The introduction of organic functional groups into the inner pore surface of the matrix allows tailoring the chemical environment where the dye molecules will be allocated, in terms of the effectiveness of the interaction between the photochromic molecules and the Si-OH groups on the surface of the pores, affecting the stability of the molecules upon prolonged exposition to UV light. The photostability of the molecules was increased in matrices functionalized with larger organic groups, or with larger amount of modifying groups. In this way the pho- todegradation of the photochromic molecules could be reduced by a factor of 5, as compared with the photodegrada- tion of the molecules in unfunctionalized silica matrix.This work was supported by research projects from Comunidad de Madrid (GR/MAT/0445/2004), and from MEC (NAN2004-09317-C04-02 and MAT2005-05131-C02-01).Kluwer Academic PublishersComunidad de MadridMinisterio de Educación y Ciencia (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2024202420062024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/343469reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement//MEC/NAN2004-09317-C04-02info:eu-repo/grantAgreement//MEC/MAT2005-05131-C02-01info:eu-repo/grantAgreement///GRhttp://dx.doi.org/10.1007/s10971-006-8774-zSíinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3434692026-05-22T06:33:51Z
dc.title.none.fl_str_mv Photostability of a photochromic naphthopyran dye in different Sol-Gel prepared ormosil coatings
title Photostability of a photochromic naphthopyran dye in different Sol-Gel prepared ormosil coatings
spellingShingle Photostability of a photochromic naphthopyran dye in different Sol-Gel prepared ormosil coatings
Pardo, Rosario
Photostability
Photochromic
Ormosil
Naphthopyran
title_short Photostability of a photochromic naphthopyran dye in different Sol-Gel prepared ormosil coatings
title_full Photostability of a photochromic naphthopyran dye in different Sol-Gel prepared ormosil coatings
title_fullStr Photostability of a photochromic naphthopyran dye in different Sol-Gel prepared ormosil coatings
title_full_unstemmed Photostability of a photochromic naphthopyran dye in different Sol-Gel prepared ormosil coatings
title_sort Photostability of a photochromic naphthopyran dye in different Sol-Gel prepared ormosil coatings
dc.creator.none.fl_str_mv Pardo, Rosario
Zayat, Marcos
Levy, David
author Pardo, Rosario
author_facet Pardo, Rosario
Zayat, Marcos
Levy, David
author_role author
author2 Zayat, Marcos
Levy, David
author2_role author
author
dc.contributor.none.fl_str_mv Comunidad de Madrid
Ministerio de Educación y Ciencia (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Photostability
Photochromic
Ormosil
Naphthopyran
topic Photostability
Photochromic
Ormosil
Naphthopyran
description A photochromic naphthopyran derivative was embedded in sol-gel prepared thin ormosil films. The resulting samples show high transparency and exhibit a strong red colouration upon irradiation with UV light. The photostabil- ity of the photochromic molecules is strongly related to the nature of the embedding ormosil matrix. The introduction of organic functional groups into the inner pore surface of the matrix allows tailoring the chemical environment where the dye molecules will be allocated, in terms of the effectiveness of the interaction between the photochromic molecules and the Si-OH groups on the surface of the pores, affecting the stability of the molecules upon prolonged exposition to UV light. The photostability of the molecules was increased in matrices functionalized with larger organic groups, or with larger amount of modifying groups. In this way the pho- todegradation of the photochromic molecules could be reduced by a factor of 5, as compared with the photodegrada- tion of the molecules in unfunctionalized silica matrix.
publishDate 2006
dc.date.none.fl_str_mv 2006
2024
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/343469
url http://hdl.handle.net/10261/343469
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
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#PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement//MEC/NAN2004-09317-C04-02
info:eu-repo/grantAgreement//MEC/MAT2005-05131-C02-01
info:eu-repo/grantAgreement///GR
http://dx.doi.org/10.1007/s10971-006-8774-z
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Kluwer Academic Publishers
publisher.none.fl_str_mv Kluwer Academic Publishers
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
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