1. Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
2. CAMCOR, University of Oregon, Eugene, Oregon 97403, United States
3. Hewlett-Packard Company, 1000 Northeast Circle Boulevard, Corvallis, Oregon 97330, United States
4. Chemical and Engineering Materials Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States