Bruno Chaudret is a specialist of organometallic and “nano” chemistry. After a PhD with Sir G Wilkinson (Imperial College, London), he studied in the 80s the synthesis and reactivity of hydride and dihydrogen metal complexes. In the early 90s, Bruno Chaudret developed an organometallic method for the synthesis of metal or metal oxide nanoparticles. These new nano-objects display interesting properties in various domains such as catalysis, magnetism, optics, micro- and nanoelectronics. He is Director of the Laboratoire de Physique et Chimie des Nano-Objets in Toulouse, member of the French Academy of Sciences, and current President of the Scientific Council of CNRS.