Smart precursors for smart nanomaterials and energy applications

S. Daniele (1)

1 CDURABLE - IRCELYON-C'Durable

Chemical solution routes (i.e. Sol-gel, MOD) are usually coupled to the design of tunable molecular precursors and the industrial development of such techniques is strongly dependent of and associated to the inorganic molecular engineering. Indeed, they are usually the starting point of the processes and influence the micro-, nano-structure and finally the nature and the properties of the materials. Furthermore, the use of well-defined precursors also allows establishing relationships between precursors and the final material and getting some insight in their transformation. The aim is then to design homo or heterometallic (“single-source”) precursors which will be converted into materials by “bottom-up“ approaches by having (i) a formulation matching that of the materials, especially stoichiometry between metals for multimetallic materials, (ii) appropriate physicochemical properties (solubility, thermal stability), (iii) the required chemical functionalities (coordination sphere with an appropriate set of ligands), and (iv) a clean, low temperature conversion into materials and minimize undesired residues in them. Such concepts will be addressed in this presentation about well-defined metal-organics precursors for up-converting (NaGdF4 co-doped Ln3+, Ln = Eu, Tb, Yb)1, down-converting (ZnO/polymer)2 and thermoelectric (SnxTi1-xO2 doped with M5+, M= Nb, Ta)3 nanomaterials.

Domaines: Catalyse; Environnement et Société

S. Daniele. Smart precursors for smart nanomaterials and energy applications. E-MRS FALL MEETING 15, Sep 2015, Varsovie, Poland. ⟨hal-01198595⟩