Εξειδίκευση τύπου :	Κεφάλαιο βιβλίου
Τίτλος:	Formation of gold nanoparticles inside the corona of amphiphilic triblock copolymer micelles
Δημιουργός/Συγγραφέας:	Meristoudi A. [EL] Πίσπας, Στέργιος[EN] Pispas, Stergios
Εκδότης:	Nova Science Publishers, Inc.
Ημερομηνία:	2013
Γλώσσα:	Αγγλικά
ISBN:	9781622579273
Περίληψη:	Gold nanoparticles (Au NPs) have attracted significant attention due to their unique optical properties which differ from those observed in the bulk material. Their size, shape and morphology, as well as the surrounding medium are the key factors that enhance and tune these properties, allowing for the application of AuNPs in photonic devises, biosensors, nanoreactors and in biomedicinal applications. Usually, amphiphilic block copolymer micelles are used for the formation of AuNPs, either inside their cores or into their corona, depending on the envisioned application. In this work, poly[(methacrylic acid)-b-(styrene)-b-(methacrylic acid)] (PMAA-PS-PMAA) triblock copolymer was utilized for the in situ synthesis of Au NPs inside the corona of the copolymer micelles in aqueous media. Stoichiometric equivalents of HAuCl4 were added as the metal precursor, which were preferentially dissolved and coordinated to the coronas of the block copolymer micelles and were subsequently reduced to Au NPs without addition of any reducing agent. Therefore, the block copolymer acts as the nanotemplate and the carboxylate groups as the reducing agents. UV-vis absorption spectroscopy was employed in order to follow the Au NPs formation kinetics. Dynamic light scattering (DLS) was utilized for studying the colloidal stability and structural response of PMAA-PS-PMAA/Au NPs hybrid nanostructures, as a function of the pH, the ionic strength and the temperature of the solution. Additional information on the structure of the nanocolloidal system, the polymer-inorganic material interactions and metal nanoparticles characteristics were obtained by the use of atomic force microscopy (AFM) and transmission electron microscopy (TEM).
Τίτλος πηγής δημοσίευσης:	Gold Nanoparticles: Synthesis, Optical Properties and Applications for Cancer Treatment
Σελίδες:	103-119
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry [EL] Φασματοσκοπία[EN] Spectroscopy
Λέξεις-Κλειδιά:	Gold nanoparticles formation kinetics Metal nanoparticles Polymer induced reduction Triblock copolymer micelles
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2013 by Nova Science Publishers, Inc. All rights reserved.
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο