1. Department of Chemistry, University of Akron, Akron, Ohio 44325, United States
2. School of Polymer Science and Polymer Engineering, University of Akron, Akron, Ohio 44325, United States
3. Department of Chemistry and Biochemistry, Wichita State University, Wichita, Kansas 67260, United States
4. Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79410, United States