Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	CdS-containing nano-assemblies of double hydrophilic block copolymers in water
Δημιουργός/Συγγραφέας:	Uchman, Mariusz Prochazka, Karel Gatsouli, Katerina [EL] Πίσπας, Στέργιος[EN] Pispas, Stergios Spirkova, Milena
Εκδότης:	Springer
Τόπος έκδοσης:	NEW YORK
Ημερομηνία:	2011-06
Γλώσσα:	Αγγλικά
ISSN:	0303-402X
DOI:	10.1007/s00396-011-2433-9
Περίληψη:	Two samples of poly(sodium(sulfamate-carboxylate)isoprene)-block-poly(ethylene oxide) copolymer (SCIEO-1 and SCIEO-2) differing in molecular weight and relative length of polyelectrolyte blocks have been used as templates for the synthesis of cadmium sulfide (CdS) nanoparticles in aqueous media. The double-hydrophilic copolymer SCIEO has very high 1D charge density, and its polymer chain structure mimics that of polysaccharide heparin. It is soluble in aqueous media, but the addition of cadmium acetate (Cd(Ac)(2)) to its aqueous solution causes the formation of micellar aggregates with Cd(2+)containing insoluble cores above the threshold Cd(2+) concentration. The trapped Cd(2+) ions can be chemically transformed to CdS nanoparticles. The stability of hybrid SCIEO/CdS micelles depends on the ratio of PEO-to-SCI lengths: it was found that the SCIEO-2 copolymer with sufficiently long PEO block behaves as an effective stabilizer for the synthesis of CdS nanoparticles embedded in micelles, while SCIEO-1 does not. The morphology of aggregates varies with the Cd-to-SCI ratios and ranges from spherical to mixture of spherical and necklace-like micellar aggregates. A number of experimental techniques including static and dynamic light scattering, fluorescence correlation spectroscopy, atomic force and transmission electron microscopy, UV-vis, and fluorescence spectroscopy were employed for the characterization of both CdS containing hybrid micelles and embedded CdS nanoparticles.
Τίτλος πηγής δημοσίευσης:	Colloid and Polymer Science
Τόμος/Κεφάλαιο:	289
Τεύχος:	9
Σελίδες:	1045-1053
Θεματική Κατηγορία:	[EL] Χημεία (Γενικά)[EN] Chemistry (General)
Λέξεις-Κλειδιά:	Double hydrophilic block copolymers Polymer self-assembly Light scattering Fluorescence correlation spectroscopy UV-vis and PL spectroscopy Microscopy CdS nanoparticles Chemistry, Physical Polymer Science
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© SPRINGER
Ηλεκτρονική διεύθυνση περιοδικού (link) :	http://link.springer.de/link/service/journals/00396/index.htm
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο