1. Department
of Polymer Engineering, University of Akron, Akron, Ohio 44325, United States
2. Air
Force Research Laboratory, Wright Patterson Air Force Base, Dayton, Ohio 45433, United States
3. Center for
Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
4. Center
for Neutron Research, National Institute of Standards and Technology (NIST), Gaithersburg, Maryland 20899, United States
5. Department
of Chemistry, Howard University, Washington, D.C. 20059, United States