A novel synthesis of CdSe nanocrystals (Articolo in rivista)

Type
Label
  • A novel synthesis of CdSe nanocrystals (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Alternative label
  • Epifani M, Giannini C, Manna L (2004)
    A novel synthesis of CdSe nanocrystals
    in Materials letters (Gen. ed.)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Epifani M, Giannini C, Manna L (literal)
Pagina inizio
  • 2429 (literal)
Pagina fine
  • 2432 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 58 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • C.N.R.--Istituto per la Microelettronica ed i Microsistemi, sezione di Lecce, Via Arnesano, 73100 Lecce, Italy C.N.R.--Istituto di Cristallografia, Sezione di Bari, Via Orabona, 4, 70125 Bari, Italy Department of Chemistry, University of California, Berkeley, CA 94720, USA (literal)
Titolo
  • A novel synthesis of CdSe nanocrystals (literal)
Abstract
  • A novel synthesis of CdSe nanocrystals is presented, which is based on the room temperature reaction between selenourea and cadmium nitrate triggered by the fast injection of a base. A long-chain thiol was employed for terminating the aggregation of the species created by the reaction, obtaining monodispersed particles that were heat-treated in pyridine at 145 degreesC to grow larger particles. TEM observations and optical absorption spectra indicate that the particle size depends on the synthesis parameters, while XRD shows the formation of CdSe nanocrystals with hexagonal crystal system. The analysis of the optical absorption spectra allows proposing a first, simple model for the formation and growth of the nanocrystals. The reaction mechanism seems to proceed through the formation of a cadmium-selenourea intermediate species. (literal)
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