alpha-cyclodextrin functionalized CdS nanocrystals for fabrication of 2/3 D assemblies (Articolo in rivista)

Type
Label
  • alpha-cyclodextrin functionalized CdS nanocrystals for fabrication of 2/3 D assemblies (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/jp062764s (literal)
Alternative label
  • Depalo, Nicoletta; Comparelli, Roberto; Striccoli, Marinella; Curri, M. Lucia; Fini, Paola; Giotta, Livia; Agostiano, Angela (2006)
    alpha-cyclodextrin functionalized CdS nanocrystals for fabrication of 2/3 D assemblies
    in The journal of physical chemistry. B
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Depalo, Nicoletta; Comparelli, Roberto; Striccoli, Marinella; Curri, M. Lucia; Fini, Paola; Giotta, Livia; Agostiano, Angela (literal)
Pagina inizio
  • 17388 (literal)
Pagina fine
  • 17399 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 110 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 12 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 35 (literal)
Note
  • ISI Web of Science (WoS) (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • University of Bari; University of Salento (literal)
Titolo
  • alpha-cyclodextrin functionalized CdS nanocrystals for fabrication of 2/3 D assemblies (literal)
Abstract
  • Different types of cyclodextrins (CDs) have been tested as mediators for the water phase transfer of organic-capped CdS nanocrystals (NCs), and alpha CD has been demonstrated to be the most effective system. The formation of a complex based on alpha CDs and colloidal NCs has been considered to be responsible for the phase transfer process and extensively investigated by optical, structural, and calorimetric measurements, as a function of the experimental parameters (pH and NC and CD concentration). A mechanism for the complexation phenomena has been suggested. The fabrication of 2/ 3 D supramolecular architectures has been proposed according to two different strategies. First, a layer-by-layer procedure has been used to obtain multilayered structures where polyelectrolyte layers have been intercalated with negatively charged alpha CD-CdS NC complexes by exploiting electrostatic interaction between polyelectrolyte and cyclodextrin OH groups. Second, a monolayer of CdS NCs has been deposited onto a self-assembled monolayer of sulfated CDs, thus combining the use of an electrostatic-force-based approach and host-guest chemistry. The important role played by host-guest interactions has then been revealed. (literal)
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