1. Konarka Technologies, 116 John St.,
Suite 12, Lowell, Massachusetts 01852, United States
2. National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States
3. Center
for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
4. Center
for Polymers and Organic Solids, University of California at Santa Barbara, Santa Barbara, California 93106, United States