1. Department of Chemical Engineering, Materials Science Program, NSF Center for Photoinduced Charge Transfer, and Laboratory for Laser Energetics, Center for Optoelectronics and Imaging, University of Rochester, 240 East River Road, Rochester, New York 14623-1212
2. Analytical Technology Division, Kodak Research Laboratories, B82 Eastman Kodak Company, Rochester, New York 14650-2136