A high purity approach to poly(3-hexylthiophene) diblock copolymers

Youngmin Lee, Ken Ichi Fukukawa, Joona Bang, Craig J. Hawker, Jin Kon Kim

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)


A study was conducted to investigate the occurrence of side reactions during the synthesis of well defined poly(3-hexythiophene) (P3HT) microinitiators, using standard procedures. The study also demonstrated the preparation of high purity macroinitiators and P3HT-block-polymethylacrylate copolymers (P3HT-b-PMA). 2,5-dibromo-3-HT was synthesized by reaction of two equivalent of NBS, with 3-HT and polymerized to give allyl-terminated P3HT by GRIM procedures. The process was followed, to demonstrate the preparation of well defined P3HT macroinitiators and P3HT-block-polymethylacrylate copolymers. The reaction procedure was followed by the termination with allylmagnesium bromide. The allyl-terminated P3HT was also fractionated by sequential Soxhlet extraction with hexane. The polymer obtained by extraction with dichloromethane was used to conduct the investigations. It was observed that regioregularity of P3HT 2 was 92.1%, as estimated from the integration ratio of relevant peaks.

Original languageEnglish
Pages (from-to)8200-8205
Number of pages6
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Issue number24
Publication statusPublished - 2008 Dec 15


  • Atom transfer radical polymerization (ATRP)
  • Block copolymers
  • Conducting polymers
  • Poly(3-hexylthiophene)

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry


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