Mario Leclerc was awarded a Ph.D. in chemistry from Université Laval, Quebec City, Canada, in 1987, under the guidance of Prof. R.E. Prud’homme. After a short post-doctoral stay at INRS-Energie et Matériaux near Montréal with Prof. L.H. Dao, he joined the Max-Planck-Institute for Polymer Research, in Mainz, Germany, as a post-doctoral fellow in the research group of Prof. G. Wegner. In 1989, he accepted a position of professor in the department of chemistry at the Université de Montréal. He returned to Université Laval in 1998. Since 2001, he has held a Canada Research Chair on Electroactive and Photoactive Polymers. He is the author or co-author of more than 250 publications which have already received more than 25 000 citations (h-index of 77). His current research activities include the development of new building blocks and polymerization methods (e.g. direct heteroarylation) for applications in plastic electronics.