Jean-Pierre Fouassier is Emeritus Professor of the University of Haute Alsace, Mulhouse. His research interests are focused on time resolved laser spectroscopy of photoinitiatiors and the design of efficient systems for applications of photopolymerization reactions in various areas. Jacques Lalevée is Professor at the Ecole Nationale Superieure de Chimie de Mulhouse ENSCMu at the University of Haute Alsace. His research focus is on free radical chemistry and the design of new polymerization initiating systems.