Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	All-Carbon Nanosized Hybrid Materials: Fluorescent Carbon Dots Conjugated to Multiwalled Carbon Nanotubes
Δημιουργός/Συγγραφέας:	Skaltsas T. Stergiou A. Chronopoulos D.D. Zhao S. Shinohara H. [EL] Ταγματάρχης, Νίκος[EN] Tagmatarchis, Nikos
Εκδότης:	American Chemical Society
Ημερομηνία:	2016
Γλώσσα:	Αγγλικά
ISSN:	1932-7447
DOI:	10.1021/acs.jpcc.6b02267
Περίληψη:	Fluorescent carbon dots (CDs) were synthesized by following a hydrothermal route in which butane-1,4-diamine and maleic acid were employed in a Teflon autoclave reactor. The structure and morphology of the so-formed spherically shaped CDs were confirmed by a combination of spectroscopic and imaging techniques, such as NMR, ATR-IR, DLS, XRD, and HR-TEM. Additionally, it was found that raw CDs possess numerous -H2 functionalities located in their external periphery, responsible for their enhanced aqueous solubility as well as the excellent dissolution CDs showed in polar protic solvents. Moreover, these -H2 units were utilized for covalently associating CDs with oxidized multiwalled carbon nanotubes (MWCNTs) yielding robust CDs-MWCNTs hybrids. Based on photoluminescence spectroscopy, electronic communications between the individual components of CDs-MWCNTs were evidenced by the quantitative quenching of the emission of CDs in the presence of MWCNTs as well as the shortening of the photoluminescence lifetime of CDs from 7.3 ns for raw CDs to 300 ps for CDs-MWCNTs. Finally, the redox properties of CDs-MWCNTs were evaluated by electrochemistry measurements, allowing to determine the electrochemical band gap of the hybrid material to be 1.2 eV.
Τίτλος πηγής δημοσίευσης:	Journal of Physical Chemistry C
Τόμος/Κεφάλαιο:	120
Τεύχος:	16
Σελίδες:	8550-8558
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:	© 2016 American Chemical Society.
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο