1. California NanoSystems Institute, ‡Department of Chemistry and Biochemistry, §Department of Materials
Science and Engineering, and ∥Department of Psychiatry and Biobehavioral Health,
Semel Institute for Neuroscience and Human Behavior, and Hatos Center
for Neuropharmacology, University of California, Los Angeles, Los Angeles, California 90095, United States
2. Department of Chemistry
and International Institute for Nanotechnology and #Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States