Rare Earth Chalcogenide Fine Particles Derived from Various Rare Earth-Ligand Complexes

摘要

Transition metal chalcogenide nanoparticles have been synthesized using various metal and chalcogen sources. Especially, metal-ligand complexes enable us to use sulfur powder as chalcogen source for the synthesis of metal chalcogenide nanoparticles, because of their reactivity. Also ligand molecules serve as surface modifiers to control the crystal growth of nanoparticles and eliminate the surface dangling bonds. Last decade, highly monodispersed nanoparticles with high quantum yield have been synthesized via the reaction between these complexes and sulfur source. On the other hand, thermal decomposition of metal - thiol and - xanthate complexes can provide us an alternative way. Therefore, it is believed that these synthesis strategies can be applied to the synthesis of monodispersed rare earth chalcogenide nanoparticles. In this report, the synthesis of rare earth sulfide fine particle was examined using various rare earth - ligand complexes such as rare earth - fatty acid, oxalate and thiol.