Optical properties of hybrid composites based on highly luminescent CdS nanocrystals in polymer (Articolo in rivista)

Type
Label
  • Optical properties of hybrid composites based on highly luminescent CdS nanocrystals in polymer (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Alternative label
  • Tamborra M., Striccoli M., Comparelli R., Curri M. L., Petrella A., Agostiano A. (2004)
    Optical properties of hybrid composites based on highly luminescent CdS nanocrystals in polymer
    in Nanotechnology (Bristol. Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Tamborra M., Striccoli M., Comparelli R., Curri M. L., Petrella A., Agostiano A. (literal)
Pagina inizio
  • 240 (literal)
Pagina fine
  • 244 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 15 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1 Dipartimento di Chimica, Universit`a di Bari, via Orabona 4, I-70126 Bari, Italy CNR IPCF Sezione Bari c/o Dipartimento di Chimica, Universit`a di Bari, Italy (literal)
Titolo
  • Optical properties of hybrid composites based on highly luminescent CdS nanocrystals in polymer (literal)
Abstract
  • High quality luminescent CdS nanocrystals (NCs), with band edge emission tunable in the blue region of the visible spectrum, were synthesized by means of thermal decomposition of precursors with oleic acid as the surfactant and incorporated in optically transparent polystyrene (PS) and poly(methyl methacrylate) (PMMA). The optical properties of the obtained nanocomposite films were investigated by absorption and emission spectroscopies. Enhancement of the band edge luminescence of CdS quantum dots was observed in both polymer matrices and the fluorescence of the composites retained narrow emission profiles. Capping exchange at the NC surface with octylamine, demonstrated to improve the luminescence properties in solution, was performed in order to investigate the role played by surface ligands in the nanocomposite. Octylamine capped NCs immobilized in the polymers showed high defect state emission and visible quenching of band edge luminescence, indicating an effective interaction between oleic acid and PMMA and PS polymeric chains (literal)
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