1. Departments of Chemistry, Biochemistry and Molecular Biology, and Physics, The Pennsylvania State University, University Park, Pennsylvania16802, United States
2. Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York11973, United States
3. Department of Chemical Engineering, The Pennsylvania State University, University Park, Pennsylvania16802, United States
4. Department of Chemical Engineering, Tianjin University, Tianjin300072, China
5. Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania16802, United States
6. Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, Pennsylvania16802, United States
7. Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania19104, United States