1. Dept. of Chemistry & Biochemistry University of California, Merced 5200 N. Lake Road Merced CA 95343 USA
2. Dept. of Materials & Biomaterials Science & Engineering University of California, Merced 5200 N. Lake Road Merced CA 95343 USA
3. Current address: Department of Chemistry & Biochemistry Santa Clara University 500 El Camino Real Santa Clara CA 95053 USA