Anionic porous metal-organic framework with novel 5-connected vbk topology for rapid adsorption of dyes and tunable white light emission

A novel porous metal-organic framework, {[Zn-2(L)center dot H2O]center dot 3H(2)O center dot 3DMAc center dot NH2(CH3)(2)}(n) (Zn(II)-MOF), was synthesized under solvothermal conditions using a flexible multicarboxylic acid (H5L = 3,5-bis(1-methoxy-3,5-benzene dicarboxylic acid) benzoic acid). Zn(II)-MOF contains 1D nanotubular channels of 13.8 angstrom x 16.4 angstrom and exhibits a rare 5-connected vbk net with a Schlafli symbol of {4(5).6(5)} topology. Notably, Zn(II)-MOF can adsorb toluidine blue fast and effectively, and trap lanthanide ions such as Eu3+ and Tb3+ to sensitize their emissions in the solid state through a Ln(3+)-exchanged approach. Furthermore, we successfully obtained white light emitting materials.