A 2D Metal-Organic Framework Based on 9-(Pyridin-4-yl)-9H-carbazole-3,6-dicarboxylic Acid: Synthesis, Structure and Properties

A metal-organic framework (MOF) formulated as [Cd-2((3)-L)(2)(DMF)(4)]center dot H2O (CdL) [H2L=9-(pyridin-4-yl)- 9H-carbazole-3,6-dicarboxylic acid, DMF=N,N-dimethylformamide] was synthesized under solvothermal condition. Crystal structural analysis reveals that CdL features the layered 2D framework with L2- ligands as 3-connected nodes. The compound CdL emits blue-violet light with the narrow emission peak and the emission maximum at 414nm upon excitation at the maximum excitation wavelength of 340nm. The compound CdL has a similar emission spectrum curve to the free H2L ligand that indicates the emission of compound CdL should be originated from the coordinated L2- ligands.