1. Department of Chemistry and Biochemistry, University of California at Santa Barbara, Santa Barbara, California 93106, United States
2. Mitsubishi Chemical Center for Advanced Materials, University of California at Santa Barbara, Santa Barbara, California 93106, United States
3. Materials Research Laboratory, University of California at Santa Barbara, Santa Barbara, California 93106, United States
4. Center for Polymers and Organic Solids, University of California at Santa Barbara, Santa Barbara, California 93106, United States
5. Department of Chemical Engineering, University of California at Santa Barbara, Santa Barbara, California 93106, United States
6. Materials Department, University of California at Santa Barbara, Santa Barbara, California 93106, United States