Synthesis, characterization, and electrical properties of regioregular alkyl-substituted PEDOTt

Ha Young Son, Eunhee Lim, Kyeong K. Lee, Dong Hoon Choi, Sungkoo Lee

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


The regioregular hexyl-substituted poly(3,4-ethylenedioxy-2- thiophenylthiophene) (PEDOTt), structurally alternating copolymer of EDOT and thiophene, was synthesized via the Grignard Metathesis (GRIM) using catalytic amounts of Ni(dppp)Cl 2. The products were characterized by 1H NMR spectroscopy, UV-vis spectroscopy and XRD. The alkyl-substituted conjugated polymer showed an enhancement of solubility in common organic solvents. Based on XRD data, the regioregular hexylsubstituted poly(3,4-ethylenedioxy-2-thiophenylthiophene) (PEDOTt) shows better crystallinity than the regiorandom hexyl-substituted PEDOTt owing to self-ordering. In addition, regioregular hexyl-PEDOTt has a conductivity of 0.788 S/cm by iodine doping.

Original languageEnglish
Pages (from-to)3597-3601
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Issue number4
StatePublished - 2012


  • Poly(3,4-ethylenedioxythiophene) (PEDOT)
  • Regioregular
  • Regiospecific


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