Structural and photophysical properties of anthracenyl and carbazolyl groups in silicone-based polymers

dc.creatorDomingues, RA
dc.creatorMartins, TD
dc.creatorYoshida, IVP
dc.creatorBrasil, MJSP
dc.creatorAtvars, TDZ
dc.date2012
dc.dateAPR
dc.date2014-08-01T18:29:29Z
dc.date2015-11-26T17:07:55Z
dc.date2014-08-01T18:29:29Z
dc.date2015-11-26T17:07:55Z
dc.date.accessioned2018-03-28T23:56:29Z
dc.date.available2018-03-28T23:56:29Z
dc.identifierJournal Of Luminescence. Elsevier Science Bv, v. 132, n. 4, n. 972, n. 978, 2012.
dc.identifier0022-2313
dc.identifierWOS:000300653200015
dc.identifier10.1016/j.jlumin.2011.10.027
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/79674
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/79674
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1280221
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionThis paper describes a simple methodology to attach luminescent groups (anthracenyl and carbazolyl) to polysiloxanes (silicone), using hydrosilylation reactions between the Si-H groups from the silicone precursor to vinyl derivatives of the lumophores. The photophysical properties of these luminescent silicones were studied using both steady-state and dynamical photoluminescence spectroscopy. A strong correlation was obtained between the structural characteristics of the anthracenyl- and carbazolyl-based polysiloxanes, depending on the amount and the position of the Si-H bonds in the silicone precursors. For sparsely distributed Si-H groups, both the anthracenyl-labeled and carbazolyl-labeled polysiloxanes showed photophysical properties (fluorescence spectrum and fluorescence decays) similar to those of 1-alkyl anthracenyl and 1-alkyl carbazolyl derivatives, respectively. Nevertheless, for closely spaced Si-H groups, emission and decay are different. The presence of excimers was observed for anthracenyl but not for carbazolyl polysiloxanes. This latter observation is quite different from that observed for carbon-based polymers for which the carbazolyl excimer formation is a very common process probably due to the differences in the silicone structure. (C) 2011 Elsevier B.V. All rights reserved.
dc.description132
dc.description4
dc.description972
dc.description978
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageen
dc.publisherElsevier Science Bv
dc.publisherAmsterdam
dc.publisherHolanda
dc.relationJournal Of Luminescence
dc.relationJ. Lumines.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectPhotophysical properties
dc.subjectAnthracene
dc.subjectCarbazole
dc.subjectSiloxanes
dc.subjectLuminescent silicones
dc.subjectPhotoresponsive Supramolecular Systems
dc.subjectDependent Relaxation Processes
dc.subjectPolyethylene Films
dc.subjectExcimer Emission
dc.subjectHybrid Material
dc.subjectTemperature
dc.subjectFluorescence
dc.subjectLuminescence
dc.subjectPressure
dc.subjectLifetime
dc.titleStructural and photophysical properties of anthracenyl and carbazolyl groups in silicone-based polymers
dc.typeArtículos de revistas


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