Multi-component assembly and luminescence tuning of lanthanide hybrids through the inside–outside double modification of zeolite A/L

Abstract

A series of novel multi-component photofunctional hybrid materials were assembled using lanthanide (Ln) polyoxometalates (Na₉LnW₁₀O₃₆·32H₂O, for LnW₁₀, Ln = europium (Eu), terbium (Tb), samarium (Sm) or dysprosium (Dy)), ionic liquids (IMCl) and functionalized zeolite A/L through an inside–outside double modification path. Firstly, the zeolite A/L was functionalized with Ln complexes (Eu-thenoyltrifluoroacetone (TTA) or Tb-trifluoroacetylacetone (TAA)) using the ion-exchange treatment and “ships in a bottle” dispersion. Then, 1-methyl-3-(trimethoxysilyl)propyl chloride (IM⁺Cl⁻) was covalently grafted onto the functionalized zeolite A/L and linked to Ln polyoxometalates as a double linker. These hybrids have two luminescence centers, one is Ln complexes, and the other is Ln polyoxometalates. By adjusting the different components of the hybrids, the luminescent tuning and integration of various colors (white, warm-white, green and red light) can be realized. These results can be expected to have potential application in appropriate fields.