1. Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
2. Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
3. Marshall School, Duluth, Minnesota 55811, United States
4. Department of Chemistry, Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand
5. Department of Chemistry, University of Akron, Akron, Ohio 44325, United States
6. Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan