In this domain, the field of study of DRECAM covers the molecule to the controlled assembly of molecules. This approach extends from the fine comprehension of molecule - metal coordination and interaction, to the construction and the synthesis of molecular assemblies having specific properties (structure, complexation, solubility, biological activity) and finally to their characterization by specific tools such as solid or liquid NMR, X-ray or neutron scattering and near field microscopies.