1. Department of Chemistry, University of California, Davis, California 95616, United States
2. Department of Physics and Astronomy, University of California, Davis, California 95616, United States
3. Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey 08854, United States
4. Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, United States
5. Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States