1. Department of Chemistry, State University of New York, Stony Brook, New York 11794-3400, United States
2. Department of Materials Science and Engineering, State University of New York, Stony Brook, New York 11794-2275, United States
3. Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6030, United States
4. Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States