Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Benzyne cycloaddition onto carbon nanohorns
Δημιουργός/Συγγραφέας:	Chronopoulos D. Karousis N. Ichihashi T. Yudasaka M. Iijima S. [EL] Ταγματάρχης, Νίκος[EN] Tagmatarchis, Nikos
Ημερομηνία:	2013
Γλώσσα:	Αγγλικά
ISSN:	2040-3364
DOI:	10.1039/c3nr01755a
Περίληψη:	A facile approach for the covalent functionalization of carbon nanohorns (CNHs) based on the benzyne cycloaddition reaction is presented. The benzynes were in situ generated from either anthranilic acid by decomposition of the internal benzenediazonium-2-carboxylate or from 2-(trimethylsilyl)-phenyl triflate by fluoride ion attack at the silicon atom followed by displacement of the trimethylsilyl group under mild conditions. Moreover, the functionalization reaction was tested and performed under conventional conditions as well as under microwave irradiation. Modified CNHs possessing fused rings onto their graphitic skeleton were fully characterized by means of complementary spectroscopic techniques, thermogravimetric analysis, electron microscopy and light scattering. Moreover, Sonogashira coupling with propargyl alcohol followed by condensation with thioctic acid, to the iodo-modified CNHs obtained from the cycloaddition reaction of 2-amino-5-iodobenzoic acid with CNHs, resulted in the preparation of a new CNH-based material in which endocyclic disulfides are extended from the fused rings onto CNHs. The latter moieties were used to immobilize gold nanoparticles, furnishing the CNH-Aunano hybrid material, in which the former were identified with the aid of UV-Vis and EDX spectroscopy.
Τίτλος πηγής δημοσίευσης:	Nanoscale
Τόμος/Κεφάλαιο:	5
Τεύχος:	14
Σελίδες:	6388-6394
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry [EL] Φασματοσκοπία[EN] Spectroscopy
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2013 The Royal Society of Chemistry.
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο