Synthesis and characterization of a π-conjugated hybrid of oligothiophene and porphyrin

Kenichi Oyaizu, Manabu Hoshino, Masuhide Ishikawa, Takuya Imai, Makoto Yuasa*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


5-(3-Thienyl)-10,15,20-triethyl-21H,23H-porphine (H2(ttep)) was synthesized and characterized. Oxidative polymerization of H2(ttep) gave a novel oligomeric porphyrin linked at the 2,5-positions of the thienyl group. Electric conductivity of 4 × 10-1 S/cm after I 2 doping indicated that the oligomer had a π-conjugated structure with a delocalization of π electrons over the thienylene backbone. PM3 calculations revealed a low HOCO-LUCO gap, which was consistent with the relatively high electric conductivity. Regioregular (head-to-tail) structure was inferred from spectroscopic and calculational results. The pendant porphyrin groups formed a regular J-type array along the thienylene backbone, which was indicated by a significant red shift of the Soret band maximum.

Original languageEnglish
Pages (from-to)5403-5412
Number of pages10
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Issue number18
Publication statusPublished - 2006 Sept 15
Externally publishedYes


  • Conducting polymers
  • Conjugated polymers
  • Macrocycles
  • Orientation

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry


Dive into the research topics of 'Synthesis and characterization of a π-conjugated hybrid of oligothiophene and porphyrin'. Together they form a unique fingerprint.

Cite this