1. George and Josephine Butler
Polymer Research Laboratory, Department of Chemistry, University of Florida, Gainesville, Florida 32611,
United States
2. Department
of Chemical and Biomolecular
Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
3. Department of Chemistry, Virginia Polytechnic Institute & State University, Blacksburg, Virginia 24061, United States
4. Department of Materials Science
and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States