Growth kinetics of CdSe quantum dots generated in polar polymers
Anno: 2012
Autori: Concina; I.a; Natile; M.M.b; Tondello; E.b; Sberveglieri; G.a
Affiliazione autori: 1,4 : CNR-IDASC SENSOR Laboratory, via Branze 45, 25131 Brescia, Italy / 2,3 : CNR-ISTM, INSTM, University of Padova, Padova, via Marzolo, 1, 35131 Padova, Italy
Abstract: Growth kinetics of CdSe nanocrystals generated inside three selected polymers (polyvinylpyrrolidone-PVP, polyethyleneglycol-PEG and polyvinylalcohol-PVA) are demonstrated to follow a self-catalytic path, with growth rates depending on the nature of the polymer, i.e. on the capability to activate the cadmium species present in the solution of a metal precursor. A two-step process drives the size evolution of nanocrystals and a critical diameter value can be identified at which the growth regime changes. The medium-term stability evaluation of nanocomposites indicates that, after an initial rearrangement, polymers keep stable the embedded CdSe nanocrystals. (c) 2012 The Royal Society of Chemistry.
Giornale/Rivista: DALTON TRANSACTIONS
Volume: 41 (47) Da Pagina: 14354 A: 14359
DOI: 10.1039/c2dt31364bCitazioni: 4dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-05-05Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui