HPLC characterization of cyclization reaction product obtained by end-to-end ring closure reaction of a telechelic polystyrene

Atsushi Takano, Yuuki Kushida, Kayoko Aoki, Keisuke Masuoka, Kenichi Hayashida, Donghyun Cho, Daisuke Kawaguchi, Yushu Matsushita

Research output: Contribution to journalArticle

58 Citations (Scopus)

Abstract

Cyclization reaction product synthesized by the end-to-end ring closure reaction of a telechelic polystyrene with molecular weight of 38K in extremely dilute conditions was carefully characterized by using two kinds of HPLC techniques, that is, liquid chromatography at the critical condition (LCCC) and size exclusion chromatography (SEC). First, the cyclization reaction product was coarsely separated into linear species and cyclic ones by LCCC; second, each fraction was further separated by high-resolution SEC. It was found from the HPLC analyses that the cyclization reaction product contains both linear and cyclic condensation products. Furthermore, dimeric, trimeric, and more multimeric cyclic molecules with reasonable abundance were identified as well as the monomeric cyclic molecule with high yield, as much as 50%, in the cyclic products.

Original languageEnglish
Pages (from-to)679-681
Number of pages3
JournalMacromolecules
Volume40
Issue number3
DOIs
Publication statusPublished - Feb 6 2007
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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