1. a Laboratoire de Photophysique Moléculaire du CNRS , Université Paris-Sud , Bâtiment 213, 91405 , Orsay , France
2. b Department of Chemistry , University of British Columbia , 2075 Wesbrook Mall, Vancouver , B.C. , V6T 1W5 , Canada
3. c Sentrol Systems Ltd. , 4401 Steeles Ave. West, Downsview , Ontario , M3N 2S4 , Canada