1. Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11794, USA;
2. Department of Chemistry and Texas Materials Institute, University of Texas at Austin, Austin, Texas 78712, USA
3. Institute for Computational and Engineering Sciences, University of Texas at Austin, Austin, Texas 78712, USA
4. Division of Chemistry, Brookhaven National Laboratory, Upton, New York 11973, USA