Nanostructure and luminescent properties of sol-gel derived europium-doped amine functionalised hybrids

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorDahmouche, K.
dc.creatorSantilli, Celso Valentim
dc.creatorPulcinelli, Sandra Helena
dc.creatorFerreira, RAS
dc.creatorCarlos, L. D.
dc.creatorBermudez, V. D.
dc.creatorCraievich, A. F.
dc.date2014-05-20T15:30:14Z
dc.date2016-10-25T18:05:41Z
dc.date2014-05-20T15:30:14Z
dc.date2016-10-25T18:05:41Z
dc.date2006-02-01
dc.date.accessioned2017-04-06T00:15:56Z
dc.date.available2017-04-06T00:15:56Z
dc.identifierJournal of Sol-gel Science and Technology. Dordrecht: Springer, v. 37, n. 2, p. 99-104, 2006.
dc.identifier0928-0707
dc.identifierhttp://hdl.handle.net/11449/39668
dc.identifierhttp://acervodigital.unesp.br/handle/11449/39668
dc.identifier10.1007/s10971-006-6426-y
dc.identifierWOS:000235446100003
dc.identifierhttp://dx.doi.org/10.1007/s10971-006-6426-y
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/882525
dc.descriptionThe effect of doping by europium triflate on the nanoscopic structure of organic-inorganic hybrid formed by a siliceous network containing pendant amine-terminated propyl chains, called aminosils, was investigated by Small-Angle X-ray Scattering (SAXS). It appears that the composites exhibit a two-level structure. The first level consists of well-condensed cubic-like siloxane octamers, with a radius of gyration around 2 angstrom. The second level is formed by the aggregation of these siloxane nanodomains to form larger structures, in which the nanodomains are spatially correlated and separated by the organic pendant chains. Europium doping inhibits the aggregation between siloxane octamers, leading to a less compact second-level structure. This can be explained by the Eu3+ stop coordination close to the external surface of the siloxane nanodomains, as detected by luminescence spectroscopy.
dc.languageeng
dc.publisherSpringer
dc.relationJournal of Sol-Gel Science and Technology
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjecthybrids
dc.subjectsol-gel
dc.subjectluminescence
dc.subjectSAXS
dc.titleNanostructure and luminescent properties of sol-gel derived europium-doped amine functionalised hybrids
dc.typeOtro


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