1. Department of Polymer Science, The University of Akron, Akron, OH 44325–4717, USA.
2. Department of Chemistry, The University of Akron, Akron, OH 44325–4717, USA.
3. Department of Polymer Engineering, The University of Akron, Akron, OH 44325–4717, USA.
4. Department of Theoretical and Applied Mathematics, The University of Akron, Akron, OH 44325–4717, USA.
5. Department of Chemistry, Clemson University, Clemson, SC 29634, USA.