Communication

The Unusual Effect of Bandgap Lowering by C60 on a Conjugated Polymer†

  1. G. Sonmez1,2,
  2. C. K. F. Shen1,
  3. Y. Rubin1,
  4. F. Wudl

Article first published online: 30 MAR 2005

DOI: 10.1002/adma.200306494

Issue

Advanced Materials

Advanced Materials

Volume 17, Issue 7, pages 897–900, April, 2005

Additional Information

How to Cite

Sonmez, G., Shen, C. K. F., Rubin, Y. and Wudl, F. (2005), The Unusual Effect of Bandgap Lowering by C60 on a Conjugated Polymer. Adv. Mater., 17: 897–900. doi: 10.1002/adma.200306494

Author Information

  1. 1

    Department of Chemistry and Biochemistry and Exotic Materials Institute, University of California, Los Angeles, CA 90095-1569, USA

  2. 2

    Present address: Sabanci University, Faculty of Engineering and Natural Sciences, Orhanli, Tuzla, 34956 Istanbul, Turkey.

  1. †

    We gratefully acknowledge financial support from the Air Force Office of Scientific Research through F49620-00-1-0103 and the Army Research Office through MURI DAAD19-99-1-0316. Instrumentation for this research was partially funded by NSF grant DGE-0114443. The authors thank Prof. John R. Reynolds, University of Florida, for helpful comments.

Publication History

  1. Issue published online: 30 MAR 2005
  2. Article first published online: 30 MAR 2005
  3. Manuscript Accepted: 8 NOV 2004
  4. Manuscript Received: 19 NOV 2003

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Keywords:

  • Carbon;
  • Conjugated polymers;
  • Polythiophenes
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Polymers with lowered bandgaps (see Figure) are produced from monomers containing a bisfulleroid as an electron-acceptor and thiophene as an electron-donor, fused by a thieno[3,4-b]pyrazine bridge. The bandgaps could reach as low as 0.25 eV. Electron flow from the poly(thiophene) backbone to the fullerene through the covalently bound thieno[3,4-b]pyrazine unit in the ground state makes this polymer a good candidate for the fabrication of photovoltaics and photoconductors.

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