Multicomponent hybrids of surfactant-capped lanthanide polyoxometalates and ZIF-8 with tuneable luminescence

Abstract

Two lanthanide polyoxometalates [Na₉LnW₁₀O₃₆·32H₂O and K₁₃Ln(SiW₁₁O₃₉)₂·30H₂O (Ln = Eu, Tb, Sm, Dy), abbreviated as LnW₁₀ and LnSiW₁₁, respectively] were prepared and functionalized with hexadecyltrimethyl ammonium bromide to give surfactant-capped polyoxometalates (SLnW₁₀/SLnSW₁₁). Zeolitic imidazolate framework (ZIF-8) nanoparticles were prepared and combined with these SLnW₁₀/SLnSiW₁₁ polyoxometalates. Both the inorganic components were formed into multicomponent hybrids via a polymerization reaction between ethyl methacrylate and 4-vinyl pyridine in the presence of a benzoyl peroxide initiator. The physical characterization and photoluminescence of these hybrid materials were investigated in detail. The luminescence colour was tuned by adjusting the building units. These results provide useful data for the preparation of multicomponent hybrid materials for practical optical applications.