Abstract
A new three-dimensional (3D) zinc(II) metal–organic framework (MOF) {[Zn2(abtc)(H2O)3](DMA)}n bearing the rigid organic ligand 3,3′,5,5′-azobenzene-tetracarboxylic acid (H4abtc) were prepared by reaction of zinc(II) nitrate and H4abtc in a mixed solvent of DMA and water at 80 °C for 3 days. Compared with pristine hydrated 1, the dehydrated 1a exhibits highly efficient catalytic activity for cyanosilylation of carbonyl compounds with a low catalyst loading of 0.1 mol% at room temperature under solvent-free conditions, which due to the open Zn2+ sites as catalytically activated sites played a significant role in the heterogeneous catalytic process. Based on the experimental results, a possible reaction mechanism has also been proposed. Next, the inhibitory effect of compound 1a on Hela cervical cancer cell viability was evaluated by CCK-8 assay, and the percentage of cell cycles was determined in flow cytometry. Besides, the transwell assay also performed to detect the effect of compound 1a on cell migration and invasion.
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