1. Chemistry & Biochemistry Department, George Mason University, Fairfax, Virginia 22030-4444; Chemistry Division, Code 6120, US Naval Research Laboratory, Washington, D.C. 20375-5342; Polymers Division, National Institute of Standards and Technology, Mail Stop 8541, Gaithersburg, Maryland 20899-8541; Northboro Research and Development Center, Saint-Gobain High-Performance Materials, Northboro, Massachusetts 01532-1545; and Chemical Engineering Department, University of Delaware, Colburn Laboratory, Newark,...