1. Advanced Materials Laboratory, Sandia National Laboratories, 1001 University Boulevard, SE, Albuquerque, New Mexico 87106, United States
2. Department of Chemistry, University of Hawaii—Manoa, 2545 McCarthy Mall, Honolulu, Hawaii 96822-2275, United States
3. Sandia National Laboratories, P.O. Box 5800, Albuquerque, New Mexico 87185-1411, United States