1. Department of Chemical Engineering, University of California 1 , Santa Barbara, California 93106, USA
2. Department of Chemistry, University of California 2 , Berkeley, California 94720, USA
3. Materials Research Laboratory, University of California 3 , Santa Barbara, California 93106, USA
4. BASF Corporation 4 , Iselin, New Jersey 08830, USA
5. BASF SE 5 , Ludwigshafen am Rhein 67056, Germany
6. California Research Alliance (CARA) by BASF 6 , Berkeley, California 94720, USA
7. Materials Sciences Division, Lawrence Berkeley National Laboratory 7 , Berkeley, California 94720, USA
8. Department of Materials, University of California 8 , Santa Barbara, California 93106, USA