1. Department of Chemistry; University of Tennessee; Knoxville TN 37996 USA
2. Konarka Technologies; Lowell MA 01852 USA
3. Department of Chemical and Biomolecular Engineering; University of Tennessee; Knoxville TN 37996 USA
4. Center for Polymers and Organic Solids; The University of California; Santa Barbara CA 93016 USA
5. Chemical Sciences Division; Oak Ridge National Lab; Oak Ridge TN 37831 USA