Influence of the heteroatom on the optoelectronic properties and transistor performance of soluble thiophene-, selenophene- and tellurophene-vinylene copolymers

Mohammed Al-Hashimi*, Yang Han, Jeremy Smith, Hassan S. Bazzi, Siham Yousuf A. Alqaradawi, Scott E. Watkins, Thomas D. Anthopoulos, Martin Heeney

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

63 Scopus citations

Abstract

We report the first soluble poly(3-dodecyl tellurophenylene-vinylene) polymer (P3TeV) by Stille copolymerization and compare its properties to the analogous thiophene and selenophene containing polymers. The optical band gap of the polymers is shown to systematically decrease as the size of the heteroatom is increased, mainly as a result of a stabilization of the LUMO energy, resulting in a small band gap of 1.4 eV for P3TeV. Field effect transistors measurements in variety of architectures demonstrate that the selenophene polymer exhibits the highest mobility, highlighting that increasing the size of the heteroatom is not always beneficial for charge transport.

Original languageEnglish (US)
Pages (from-to)1093-1099
Number of pages7
JournalChemical Science
Volume7
Issue number2
DOIs
StatePublished - Jan 1 2016

ASJC Scopus subject areas

  • Chemistry(all)

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