1. School of Polymer Science and Polymer Engineering, The University of Akron, Akron, Ohio 44325, United States
2. Department of Chemistry, Chicago Center for Theoretical Chemistry, James Franck Institute, and the Institute for Biophysical Dynamics, The University of Chicago, Chicago, IIIinois 60637, United States
3. Department of Chemical, Biomolecular, and Corrosion Engineering, The University of Akron, Akron, Ohio 44325, United States