1. Contribution from the Department of Chemistry and Center for Ultrafast Optical Characteristics Control, Yonsei University, Seoul 120-749, Korea, Department of Chemistry and Biochemistry, 1 University Station, A5300, The University of Texas at Austin, Austin, Texas 78712-0165, and Department of Chemistry, Graduate School of Science, Kyoto University, and Core Research for Evolutional Science and Technology (CREST) of Japan Science and Technology Agency (JST), Kyoto 606-8502, Japan