1. Materials Research Laboratory, University of California, Santa Barbara, California 93106; Department of Chemical and Biological Engineering, Korea University, Seoul 136-701, Republic of Korea; Department of Materials, University of California, Santa Barbara, California 93106; Department of Chemical Engineering, University of California, Santa Barbara, California 93106; Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106; and Advanced Photon Source, Argonne...