1. Chemistry Division, US Naval Research Laboratory, Washington, District of Columbia 20375, United States
2. Chemistry Department, University of Dayton, 300 College Park, Dayton, Ohio 45469, United States
3. Soft Matter Materials Branch, Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson AFB, Dayton, Ohio 45433, United States
4. UES, Inc., Dayton, Ohio 45432, United States