Synthesis of a dendrimeric phenoxy-substituted cyclotetraphosphazene and its non-covalent interactions with multiwalled carbon nanotubes

OKUTAN E., Cosut B., Kayiran S. B., DURMUŞ M., KILIÇ A., YEŞİLOT S.

POLYHEDRON, vol.67, pp.344-350, 2014 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 67
  • Publication Date: 2014
  • Doi Number: 10.1016/j.poly.2013.09.011
  • Journal Name: POLYHEDRON
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.344-350
  • Kocaeli University Affiliated: Yes

Abstract

A dendrimeric phenoxy-substituted cyclotetraphosphazene has been prepared for the non-covalent functionalization of multiwalled carbon nanotubes (MWCNTs). The synthesized cyclotetraphosphazene derivatives (2-4) and dendrimeric cyclotetraphosphazene (5) have been characterized by standard spectroscopic techniques. The functionalization of MWCNTs with compound 5 has been accomplished and the resulting MWCNT-5 hybrid has been characterized by P-31 NMR, H-1 NMR, Raman spectroscopy, X-ray diffraction (XRD), energy dispersive X-ray (EDX), fluorescence, thermal gravimetric analysis (TGA) and high-resolution transmission electron microscopy (HRTEM) techniques. The results showed that the dendrimeric compound 5 has been attached to the MWCNTs via non-covalent "pi-pi" interactions between the phenoxy groups on the dendrimeric compound 5 and the extended it system of the MWCNTs. The MWCNT-5 hybrid exhibited significant dispersion stability in common organic solvents. (C) 2013 Elsevier Ltd. All rights reserved.