Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Outer-surface covalent functionalization of carbon nanohorn spherical aggregates assessed by highly spatial-resolved energy-dispersive X-ray spectrometry in scanning electron microscopy
Δημιουργός/Συγγραφέας:	Nakajima, Hideaki Morimoto, Takahiro Kobashi, Kazufumi Zhang, Minfang Sideri, Ioanna K. [EL] Ταγματάρχης, Νίκος[EN] Tagmatarchis, Nikos Okazaki, Toshiya
Εκδότης:	American Chemical Society
Ημερομηνία:	2020
Γλώσσα:	Αγγλικά
ISSN:	1932-7447 1932-7455
DOI:	10.1021/acs.jpcc.0c07986
Περίληψη:	Single-walled carbon nanohorns (CNHs) have great potential in diverse applications such as gas storage, catalyst support, and drug carriers. Although chemical functionalization of CNHs is critical for enhancing the dispersibility and handling in solution, they inherently form robust spherical “dahlia-like” aggregates, which may inhibit chemical reactivity. Theoretical and experimental studies have identified spatial information related to the functional groups on each tubule. However, the overall characteristics of dahlia-like aggregates remain unclear. Herein, highly spatial-resolved energy-dispersive X-ray spectrometry analysis in scanning electron microscopy is employed to elucidate the spatial distribution of functional groups on dahlia-like aggregates. The technique clearly visualizes the elemental distribution associated with the functional groups on the dahlia-like structure. Additionally, it is found that the outer surface of an individual CNH dahlia-like aggregate is functionalized while the inner core remains almost unreacted. Hence, the present findings provide fundamental information about the sites in CNHs that can be modified by chemical functionalization.
Τίτλος πηγής δημοσίευσης:	The Journal of Physical Chemistry C
Τόμος/Κεφάλαιο:	124
Τεύχος:	45
Σελίδες:	25142–25147
Θεματική Κατηγορία:	[EL] Φαρμακευτική χημεία[EN] Pharmaceutical chemistry [EL] Φασματοσκοπία[EN] Spectroscopy [EL] Χημική τεχνολογία[EN] Chemical technolgy
Λέξεις-Κλειδιά:	Carbon nanotubes Chemical structure Elements Functional groups Functionalization
Κάτοχος πνευματικών δικαιωμάτων:	Copyright © 2020 American Chemical Society
Ηλεκτρονική διεύθυνση στον εκδότη (link):	https://pubs.acs.org/doi/10.1021/acs.jpcc.0c07986
Ηλεκτρονική διεύθυνση περιοδικού (link) :	https://pubs.acs.org/journal/jpccck
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο