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dc.contributor.authorFernàndez-Altable, Víctor
dc.contributor.authorDalmases, Mariona
dc.contributor.authorFalqui, Andrea
dc.contributor.authorCasu, Alberto
dc.contributor.authorTorruella, Pau
dc.contributor.authorEstradé, Sònia
dc.contributor.authorPeiró, Francesca
dc.contributor.authorFiguerola, Albert
dc.date.accessioned2015-08-03T12:32:12Z
dc.date.available2015-08-03T12:32:12Z
dc.date.issued2015-03-10
dc.identifier.issn08974756
dc.identifier.doi10.1021/cm504433y
dc.identifier.urihttp://hdl.handle.net/10754/564101
dc.description.abstractMetallic nanocrystals have been revealed in the past years as valuable materials for the catalytic growth of semiconductor nanowires. Yet, only low melting point metals like Bi have been reported to successfully assist the growth of elongated CdX (X = S, Se, Te) systems in solution, and the possibility to use plasmonic noble metals has become a challenging task. In this work we show that the growth of anisotropic CdSe nanostructures in solution can also be efficiently catalyzed by colloidal Au nanoparticles, following a preferential crystallographic alignment between the metallic and semiconductor domains. Noteworthy, we report the heterodox use of semiconductor quantum dots as a homogeneous and tunable source of reactive monomer species to the solution. The mechanistic studies reveal that the in situ delivery of these cadmium and chalcogen monomer species and the formation of AuxCdy alloy seeds are both key factors for the epitaxial growth of elongated CdSe domains. The implementation of this method suggests an alternative synthetic approach for the assembly of different semiconductor domains into more complex heterostructures.
dc.description.sponsorshipWe acknowledge financial support from the Spanish MINECO through CTQ2012-32247 and from the Generalitat de Catalunya through 2014 SGR 129. A.F. acknowledges the Spanish MINECO for a Ramon y Cajal Fellowship (RYC-2010-05821). V.F.-A. acknowledges the European Comission for the Career Development Allowance under the Marie Curie Programme (MRTN-CT-2005-019283). Some of the TEM experiments were carried out in the Scientific and Technological Centers of the University of Barcelona (CCiT-UB), with financial support of CSD2009-00013 and MAT2010-16407 Spanish research projects.
dc.publisherAmerican Chemical Society (ACS)
dc.titleAu-assisted growth of anisotropic and epitaxial cdse colloidal nanocrystals via in situ dismantling of quantum dots
dc.typeArticle
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentEnvironmental Science and Engineering Program
dc.contributor.departmentBioscience Program
dc.identifier.journalChemistry of Materials
dc.contributor.institutionUniv Barcelona, Dept Quim Inorgan, E-08028 Barcelona, Catalonia, Spain
dc.contributor.institutionUniv Barcelona, Inst Nanociencia & Nanotecnol IN2UB, E-08028 Barcelona, Catalonia, Spain
dc.contributor.institutionUniv Barcelona, Dept Elect, Lab Electron Nanoscopies LENS MIND IN2UB, E-08028 Barcelona, Catalonia, Spain
dc.contributor.institutionITT, Dept Nanochem, I-16163 Genoa, Italy
kaust.personFalqui, Andrea


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