Photochemical conversion of 2,5-diiodothiophene condensed on substrates to oligothiophene and polythiophene thin films and micro-patterns

Sudarshan Natarajan, Seong H. Kim

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

A simple and efficient photochemical process for in-situ fabrication of oligothiophene and polythiophene thin films and patterns is demonstrated. The process involves vapor deposition of monomeric precursor molecules, 2,5-diiodothiophene on a substrate followed by photodissociation of the C-I bond to produce monomer radicals that further react in the condensed phase to produce oligothiophene and polythiophene. The thienyl molecular structure of the precursor is preserved during the photochemical process, providing good π conjugation of the produced polymer. Alkyl and cross-linking defects are negligible in the produced film. The direct conversion of the adsorbed monomer to the conjugated polymer allows easy fabrication of thin films and micro-patterns of polythiophene.

Original languageEnglish (US)
Pages (from-to)606-611
Number of pages6
JournalThin Solid Films
Volume496
Issue number2
DOIs
StatePublished - Feb 21 2006

All Science Journal Classification (ASJC) codes

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

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