Journal
POLYHEDRON
Volume 67, Issue -, Pages 344-350Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.poly.2013.09.011
Keywords
pi-pi stacking; Phosphazene; Carbon nanotube
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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.
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