1. Department of Chemistry University of Calgary 2500 University Drive NW Calgary AB T2N 1N4 Canada
2. Department of Chemistry, Nanoscience Centre University of Jyväskylä, P.O. Box 35 FI-40014 Jyväskylä Finland
3. Gunning-Lemieux Chemistry Centre University of Alberta 11227 Saskatchewan Drive NW Edmonton AB T6G 2G2 Canada