A 3D-diamond-like metal–organic framework: Crystal structure, nonlinear optical effect and high thermal stability

•A new 3D MOF with 3-fold interpenetrated diamond net was synthesized and structurally characterized.•This compound displays blue photoluminescence and high thermal stability.•This new compound is the first example, with second-order nonlinear optical effects, constructed from the Hcpt and/or ATZ ligands.

A new metal–organic framework [Zn(cpt)(ATZ)]n (1, HATZ = 5-amino-1H-tetrazol, Hcpt = 4-(4H-1,2,4-Triazol-4-yl)benzoic acid), has been solvothermally synthesized and structurally characterized by single crystal X-ray diffraction. Structural analysis shows that compound 1 is a three-dimensional (3D) framework with 3-fold interpenetrated diamond topology where the Zn(II) centers are all 4-coordinated. Compound 1 exhibits high thermal stability up to 370 °C, and weak second-order nonlinear optical coefficient as ca. 0.13 times as that of potassium dihydrogen phosphate (KDP), and also displays blue photoluminescence at room temperature.

Graphical abstractA new mixture ligand three-dimensional framework Zn(II)-MOFs with a 3-fold interpenetrated diamond net has been synthesized and characterized, which exhibits weak second-order nonlinear optical coefficient comparable to KDP, and displays blue photoluminescence and high thermal stability.Figure optionsDownload full-size imageDownload as PowerPoint slide