1. Department
of Chemistry, State University of New York at Stony Brook, Stony
Brook, New York 11794-3400, United States
2. Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge
CB2 1EW, United Kingdom
3. Key Laboratory of Mesoscopic
Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
4. National High Magnetic Field Laboratory, 1800 East Paul Dirac Drive, Tallahassee,
Florida 32310, United States