Organometallic-metallic-cyclotriphosphazene mixtures: solid state method for metallic nanoparticle growth

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dc.contributor.authorDíaz, Carlos
dc.contributor.authorValenzuela, María Luisa
dc.contributor.authorO'Dwyer, Colm
dc.contributor.editorRoger Dong
dc.contributor.funderFondo Nacional de Desarrollo Científico, Tecnológico y de Innovación Tecnológicaen
dc.date.accessioned2018-07-17T09:30:21Z
dc.date.available2018-07-17T09:30:21Z
dc.date.issued2013-04
dc.date.updated2018-06-11T18:20:43Z
dc.description.abstractWe review a recent general solid state method to obtain metallic, metal oxide and phosphate nanoparticles and crystals by pyrolysis at 800°C using organometallic derivatives of cyclo and polyphosphazene precursors containing diverse organometallic fragments linked to polymeric or oligomeric phosphazenes. When the preparation of the molecular precursor is not possible or results in low yield, an alternative method using solid state mixtures of the type MLn/N3P3[O2C12H8]n, where MLn can be a single metallic salt, and a coordination compound or an organometallic, is possible. For AuCl(PPh3)/[NP(O2C12H8)]n mixtures, single crystal cubic Au nanoparticles form, whose morphology, crystal shape, size and distribution strongly depends on deposition quantity and the mixture molar ratio. Nanoparticles as small as 3.5 nm are observed if the mixture is prepared in a crucible and varied geometries of microcrystals found when the mixture was deposited on Si or SiO2 wafers, including single-crystal gold fullerene structures. Extension to Ag, Pd and Re-containing precursor mixtures such as Ag(PPh3)(CF3SO3)/ [NP(O2C12H8)]3, PdCl2/N3P3[O2C12H8]3, and KReO4/N3P3[O2C12H8]3 allows microcrystal formation during pyrolysis. A thermally induced phase demixing mechanism describes the evolution of the crystal growth, aided microphase separation of the polymer mixture. This microphase demixing is shown to be an overarching mechanism involved in the nano to micro scale growth of crystals. A probable mechanism of the atomic and molecular-level chemistry is also proposed based on decomposition of the macromolecular polymeric, trimer and oligomeric precursors for the initial stages.en
dc.description.sponsorshipFondo Nacional de Desarrollo Científico, Tecnológico y de Innovación Tecnológica (Fondecyt (project 1085011))en
dc.description.statusNot peer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationDiaz, C., Valenzuela, M. L. and O'Dwyer, C. (2013) 'Organometallic-Metallic-Cyclotriphosphazene Mixtures: Solid state Method for Metallic Nanoparticle Growth', in Dong, Y. (ed.), Nanostructures: Properties, Production Methods and Applications, New York: Nova Science Publishers, pp. 187-208. isbn: 978-162618081-9en
dc.identifier.endpage208en
dc.identifier.isbn978-162618081-9
dc.identifier.journaltitleNanostructures: Properties, Production Methods and Applicationsen
dc.identifier.startpage187en
dc.identifier.urihttps://hdl.handle.net/10468/6462
dc.language.isoenen
dc.publisherNova Science Publishersen
dc.relation.ispartofNanostructures: Properties, Production Methods and Applications
dc.relation.urihttps://www.novapublishers.com/catalog/product_info.php?products_id=39790
dc.rights© 2013 by Nova Science Publishers, Inc. All rights reserved.en
dc.subjectMixturesen
dc.subjectCoordination compoundsen
dc.subjectCyclotriphosphazenesen
dc.subjectMetallic nanoparticlesen
dc.subjectMicrocrystal formationen
dc.subjectMolecular precursoren
dc.subjectPrecursor mixtureen
dc.subjectSolid state methoden
dc.subjectSolid state mixturesen
dc.subjectGolden
dc.subjectGold depositsen
dc.subjectMetal nanoparticlesen
dc.subjectMetallic compoundsen
dc.subjectMetalsen
dc.subjectMicrocrystalsen
dc.subjectMicrophase separationen
dc.subjectNanoparticlesen
dc.subjectOligomersen
dc.subjectOrganometallicsen
dc.subjectPalladiumen
dc.subjectPolymersen
dc.subjectPyrolysisen
dc.subjectSilicon wafersen
dc.subjectSilveren
dc.subjectSingle crystalsen
dc.titleOrganometallic-metallic-cyclotriphosphazene mixtures: solid state method for metallic nanoparticle growthen
dc.typeBook chapteren
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