A multifunctional anionic 3D Cd(II)-MOF derived from 2D layers catenation: Organic dyes adsorption, cycloaddition of CO2 with epoxides and luminescence

An anionic Cd(II)-based metal-organic framework, {[Cd(L)(bpb)0.5(H2O)]·H2O·[(CH3)2NH2]+}n (HL-7, HL is the initial of the author Hui-Ling Liu; H3L = 2′,6′-dimethyl-[1,1′-biphenyl]-3,4′,5-tricarboxylic acid and bpb = 1,4-bis(pyrid-4-yl)benzene), has been hydrothermally synthesized and structurally characterized. Interestingly, HL-7 reveals a three dimensional (3D) frameworks which are constructed from catenation of 2D layers. Further studies prove that as an anionic framework, HL-7 could be a good candidate as adsorption materials for cationic organic dyes, such as methylene blue (MB+) and rhodamine B (RhB+). Moreover, catalytic properties for the cycloaddition of CO2 with epoxides and luminescent property of HL-7 are also investigated at normal temperature and pressure.