Session CT 4.1
Innovation in materials synthesis
Microwave-assisted synthesis of inorganic, hybride or organic materials in liquid fluids, Microwave-assisted surface functionalization or assembly, High-temperature chemistry using microwaves, Non-thermal microwave effects for material elaboration
KN: Markus NIEDERBERGER (ETH Zurich, SZ)
IL1: Etienne SAVARY (SAIREM, Caen, FR)
IL2: Jocelyn PARÉ (Fond. Innov. Nouveau Brunswick-FINB, CA)
Innovative synthesis of nanoparticles and functional hybrid materials requires the control of interface interactions that are the source of growth control and / or organization of material. A new impulse is expected with the use of microwaves giving spectacular results. Quick reactions and energy efficiency induced by microwave absorption dramatically increase the kinetics of reactions, shift the chemical equilibria of species in solution and modify the adsorption selectivity at interfaces. For example, the fast heating rates triggered by microwave increase the different cation reactivity and facilitate the synthesis of binary oxides. It can also create hot spots using components having high dielectric constant that can induce heterogeneous nucleation. This technique that is rarely used in the development of nano- and hybrid materials as well as nanoparticle functionalization opens new perspectives to tune chemical and surface composition, structures, morphologies and unusual organization.