1. Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
2. Departments of Chemistry, Chemical Engineering, Engineering and Public Policy, Center for Atmospheric Particle Studies, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, United States
3. CNRS, LISA, Univ of Paris Est Creteil and University Paris Cité, F-94010 Créteil, France