Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Step-by-step characterization of a series of polyamidoamine dendrons on carbon nanohorn surface
Δημιουργός/Συγγραφέας:	Nakajima, Hideaki Kobashi, Kazufumi Stangel, Christina Morimoto, Takahiro Zhang, Minfang [EL] Ταγματάρχης, Νίκος[EN] Tagmatarchis, Nikos Okazaki, Toshiya
Ημερομηνία:	2023
Γλώσσα:	Αγγλικά
ISSN:	01694332
DOI:	10.1016/j.apsusc.2023.157077
Περίληψη:	Polyamidoamine (PAMAM) dendrimers/dendrons chemically functionalized on carbon nanohorns (CNHs) have exhibited an excellent ability, especially for energy conversion and gene therapy applications. However, the main issue is its low functional group coverage, and the low reaction yield has been less understood. Here, we examine the surface state and functionalization efficiency of PAMAM dendrons on CNHs in each reaction step. The multifaceted measurements using Raman, ζ potential, and Fourier transform infrared spectroscopy (FT-IR) demonstrate that PAMAM dendrons are successfully synthesized on CNH surfaces. In addition, highly sensitive energy dispersive X-ray spectroscopy in the scanning electron microscope (SEM-EDS) enables precise evaluation of functional group coverage consistent with the chemical structure of each product. Furthermore, the detailed analysis of SEM-EDS imaging, morphology characterization, and FT-IR provides chemical information regarding the reactivity of PAMAM functionalization on CNHs. One important finding is that chemical interaction by hydrogen bonds among PAMAM/CNH molecules is a considerable possibility for low reactivity. Our results are widely beneficial for the realization of highly efficient grafting of PAMAM dendrons on various carbon nanomaterials.
Τίτλος πηγής δημοσίευσης:	Applied Surface Science
Τόμος/Κεφάλαιο:	624
Θεματική Κατηγορία:	[EL] Φασματοσκοπία[EN] Spectroscopy [EL] Χημεία[EN] Chemistry
Λέξεις-Κλειδιά:	Carbon nanohorns Polyamidoamine dendrimer Functionalization Energy dispersive X-ray spectrometry Scanning electron microscope
EU Grant:	JPNP16010 Nanotechnology Platform Program
Κάτοχος πνευματικών δικαιωμάτων:	© 2023 Elsevier B.V. All rights reserved.
Ηλεκτρονική διεύθυνση στον εκδότη (link):	https://doi.org/10.1016/j.apsusc.2023.157077
Σημειώσεις:	This work was supported by a project (JPNP16010) commissioned by the New Energy and Industrial Technology Development Organization (NEDO). This work was partly conducted at the AIST Nano-processing Facility with support from the “Nanotechnology Platform Program” of the Ministry of Education, Culture, Sports, Science, and Technology (MEXT), Japan. We also thank Dr. Yuki Kuwahara, Yoshiue Ikuta, Keiko Kojima, Yumi Masuda, Yusui Sato, and Yukari Urano for their technical assistance.
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο