An anionic Zn-MOF composed of 1D columnar SBUs for highly CH/CH selective adsorption, dye adsorption and fluorescence sensing.

An anionic three-dimensional framework {(MeNH)[Zn(L)(ad)(μ-O)]·10DMF·11HO}(Zn-MOF, L = 4,4'-(3-aminopyridine-2,5-diyl)dibenzoic acid; ad = adeninate) with a column-layered structure was synthesized. Structural studies show that the Zn-MOF has octahedral cages [Zn(ad)(μ-O)], the adjacent cages are connected by O atoms to form 1D columnar SBUs, and every four SBUs are connected by L to form a square channel 3D framework. Gas adsorption studies show that the BET and Langmuir surface areas of Zn-MOF are 1370.