Article

Intrachain versus Interchain Electron Transport in Poly(fluorene-alt-benzothiadiazole): A Quantum-Chemical Insight

  1. Antoine Van Vooren1,
  2. Ji-Seon Kim Prof. 2,
  3. Jérôme Cornil Dr. 1

Article first published online: 3 APR 2008

DOI: 10.1002/cphc.200700847

Issue

ChemPhysChem

ChemPhysChem

Volume 9, Issue 7, pages 989–993, May 2, 2008

Additional Information

How to Cite

Van Vooren, A., Kim, J.-S. and Cornil, J. (2008), Intrachain versus Interchain Electron Transport in Poly(fluorene-alt-benzothiadiazole): A Quantum-Chemical Insight. ChemPhysChem, 9: 989–993. doi: 10.1002/cphc.200700847

Author Information

  1. 1

    Laboratory for Chemisty of Novel Materials, University of Mons-Hainaut, Place du Parc 20, 7000 Mons, Belgium, Fax: : (+32) 65-373861

  2. 2

    Blackett Laboratory, Imperial College London, Prince Consort Road, London SW7 2BW, UK

Publication History

  1. Issue published online: 28 APR 2008
  2. Article first published online: 3 APR 2008
  3. Manuscript Revised: 10 JAN 2008
  4. Manuscript Received: 19 DEC 2007

Funded by

  • Belgian Federal Government
  • European Integrated Project NAIMO. Grant Number: NMP4-CT-2004-500355
  • Belgian National Fund for Scientific Research (FNRS/FRFC)
  • “Fonds pour la Formation à la Recherche dans l′Industrie et dans l′Agriculture (FRIA)”
  • EPSRC

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Keywords:

  • electron transfer;
  • electron transport;
  • polymers;
  • quantum chemistry;
  • thin films

Abstract

Poly(9,9-di-n-octylfluorene-alt-benzothiadiazole) [F8BT], displays very different charge-transport properties for holes versus electrons when comparing annealed and pristine thin films and transport parallel (intrachain) and perpendicular (interchain) to the polymer axes. The present theoretical contribution focuses on the electron-transport properties of F8BT chains and compares the efficiency of intrachain versus interchain transport in the hopping regime. The theoretical results rationalize significantly lowered electron mobility in annealed F8BT thin films and the smaller mobility anisotropy (μ∥/μ⊥) measured for electrons in aligned films (i.e. 5–7 compared to 10–15 for holes).

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