1. Department of Chemistry, Michigan Technological University, Houghton, Michigan 49931, United States
2. Department
of Chemistry and Biochemistry, University of Maryland, College
Park, Maryland 20892, United States
3. Condensed Matter Physics & Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, United States
4. Department of Chemical Engineering, Michigan Technological University, Houghton, Michigan 49931, United States