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Journal of Nanotechnology
Volume 2011, Article ID 572329, 10 pages
Research Article

Variation of the Side Chain Branch Position Leads to Vastly Improved Molecular Weight and OPV Performance in 4,8-dialkoxybenzo[1,2-b:4,5-b′]dithiophene/2,1,3-benzothiadiazole Copolymers

1The Department of Physics and the Center for Nanotechnology and Molecular Materials, Wake Forest University, Winston-Salem, NC 27109, USA
2The Department of Chemistry, Wake Forest University, Winston-Salem, NC 27109, USA

Received 2 February 2011; Accepted 13 April 2011

Academic Editor: Román López-Sandoval

Copyright Β© 2011 Robert C. Coffin et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Supplementary Material

The contents of supporting information include 1H and 13C NMR spectra for 7 and 10, 119Sn NMR spectra for monomer 8--10, and FTIR spectra of P1--P3.

  1. Supplementary Material