Indirect functionalization of multiwalled carbon nano tubes through non-covalent interaction of functional polyesters


Omurtag P. S. , Alkan B., Durmaz H., Hızal G., Tunca Ü.

POLYMER, vol.141, pp.213-220, 2018 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 141
  • Publication Date: 2018
  • Doi Number: 10.1016/j.polymer.2018.03.017
  • Journal Name: POLYMER
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.213-220
  • Keywords: Polyester synthesis, Huisgen cycloaddition reaction, Multiwalled carbon nanotubes, Non-covalent interaction, Pyrene functional group, TERMINAL ALKYNES, POLYMER STRANDS, NANOTUBES, CYCLOADDITION, CHEMISTRY, PYRENE, AZIDES, LIGATION
  • Istanbul Technical University Affiliated: Yes

Abstract

Synthetic approach was demonstrated to obtain a series of polyesters containing electron deficient internal alkyne units stemmed from acetylene dicarboxylic acid in the main backbone. Consequently, polyesters were made use of a polymeric platform in copper free cycloaddition reaction like, Huisgen type 1,3-dipolar cycloaddition in order to have pendant functional groups, pyrene, pyrene/COOH, pyrene/OH, and pyrene/C=CH using organic azides. A pyrene pendant unit of these polyesters was noncovalently interacted with the surface of multiwalled carbon nanotubes (MWCNTs) via pep stacking as shown by high-resolution transmission electron microscopy (HRTEM), thermogravimetric analysis (TGA) and UVevisible spectroscopy. Therefore, MWCNTs were indirectly functionalized using prefunctional polyesters that possess pendant functional groups: pyrene or pyrene together with -COOH, -OH, and -C=CH. Moreover, the dispersion stability of modified CNTs was investigated in frequently used organic solvents. (c) 2018 Elsevier Ltd. All rights reserved.