High conducting Langmuir-Blodgett films comprising head-to-tail poly (3-hexylthiophene)

Masahiro Rikukawa, Masaru Nakagawa, Hiroshi Abe, Kyoko Ishida, Kohei Sanui, Naoya Ogata

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Conductive ultra thin films were fabricated from mixed monolayers containing stearic acid and structurally homogeneous poly(3-hexylthiophene), which had almost 100% head-to-tail couplings with a Mw of 8100 (Mw/Mn=1.5) as estimated by 1HNMR, 13C NMR, and gel permeation chromatography. The mixed monolayers were found to be stable at the air-water interface and could be readily deposited onto solid substrates as Y-type films by the vertical lifting method. These Langmuir-Blodgett (LB) films exhibited well-defined layered structures as determined by UV-Vis absorption and X-ray diffraction measurements. The conductivity of the mixed LB films doped with NOPF6 was in the range of 50-100 S cm-1 and was 50-to 100-fold higher than that of the mixed LB films using poly(3-hexylthiophene) synthesized by the usual chemical oxidation with FeCl3.

Original languageEnglish
Pages (from-to)240-244
Number of pages5
JournalThin Solid Films
Volume273
Issue number1-2
DOIs
Publication statusPublished - 1996 Feb
Externally publishedYes

Keywords

  • Conductivity
  • Langmuir-Blodgett films
  • Monolayers
  • Polymers

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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