1. Department of Chemistry, University of Washington, Seattle, Washington 98195-1700, United States
2. Department of Materials Science and Engineering, University of Colorado Boulder, Boulder, Colorado 80303, United States
3. Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
4. Dipartimento di Fisica e Chimica, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy
5. Department of Chemistry, James Franck Institute, and Pritzker School of Molecular Engineering, University of Chicago, Chicago, Illinois 60637, United States
6. Department of Chemistry, Columbia University, New York, New York 10027, United States
7. Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
8. Renewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, Colorado 80303, United States
9. Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
10. Department of Chemical and Biological Engineering, University of Colorado Boulder, Boulder, Colorado 80303, United States