Synthesis and properties of polyamides with [60]fullerene in the main chain

Masaki Ozawa, Jing Li, Kentaro Nakahara, Lixin Xiao, Hiroharu Sugawara, Koichi Kitazawa, Kazushi Kinbara, Kazuhiko Saigo

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

A novel series of polyamides having [60]fullerene moieties in the main chain were synthesized by a direct polycondensation of [60]fullerenobis(acetic acid) or [60]fullerenobis(acetic acid)/isophthalic acid mixture with a diamine in the presence of triphenyl phosphite and pyridine. Various properties of the polyamides were characterized by means of IR, GPC, TGA, DSC, UV-visible, and photoluminescence. The molecular weight Mw of the [60]fullerene-containing polyamides was observed in the range from about 300,000 to 3,000; upon the changing of the ratio of [60]fullerenobis(acetic acid)/isophthalic acid in the starting mixture, the resulting Mw decreased with increasing the ratio. Most of the thermal and optical properties gradually changed as the ratio changed; the major optical absorption band in visible range exhibited a significant tailing, which shifted toward a longer wavelength, while the photoluminescence spectrum red-shifted with increasing [60]fullerene content.

Original languageEnglish
Pages (from-to)3139-3146
Number of pages8
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume36
Issue number17
DOIs
Publication statusPublished - 1998 Dec

Keywords

  • Conjugation
  • Cyclopropane ring
  • Polyamide
  • [60]fullerene

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

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