1. Department of Chemistry, University of California, Berkeley, California 94720, United States
2. Division of Chemical Sciences, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
3. Department of Materials Science and Bioengineering, University of California, Berkeley, California 94720, United States
4. BASF Corporation, Berkeley, California 94720, United States
5. BASF SE, 67056 Ludwigshafen am Rhein, Germany
6. The Molecular Foundry and Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States