Novel core–shell structure microspheres based on lanthanide complexes for white-light emission and fluorescence sensing

A series of core–shell structure materials based on Ln-dpa complex and silica are prepared and the complex coating are generated on the surface of silica pheres successfully. The SiO₂@Ln-dpa exhibits excellent luminescence properties. Furthermore, SiO₂@Eu-dpa possesses highly selective and sensitive for acetone and Cu²⁺.