Retracted: Porous Gd^III‐Organic Framework as a Dual‐Functional Material for Cyanosilylation of Aldehydes and Ablation of Human Liver Cancer Cells

Abstract

Metal‐organic frameworks (MOFs) have gained great attention in recent years because they could behave as multifunctional materials which combine the advances of porous solids and coordination complexes. With the aim of constructing multifunctional MOFs, in this study, we choose a Y‐shaped tricarboxylic ligand biphenyl‐3,4′,5‐tricarboxylic acid (H3bpt) to react with GdIII ions to afford a new dual‐functional lanthanide‐organic framework with the chemical formula of [Gd2(bpt)2(H2O)2]·(DMF)2(H2O)6 (1) (DMF = N,N‐dimethylformamide) under solvothermal condition. The title complex was characterized by means of elemental analysis, FT‐IR spectroscopy, thermogravimetric and X‐ray diffraction analyses. Crystal structure analysis reveals that compound 1 is composed of 1D helical chain secondary building units that connect by the bpt3– ligands into a 3D framework with 1D nanosized channels running along the b axis. In view of its high porosity and accessible open metal sites, the activated 1 (1a) was studied for the cyanosilylation of aldehydes under solvent‐free conditions. The catalytic activity of 1a is much higher than that of compound 1, indicating that the exposed open metal sites of 1a is beneficial to the cyanosilylation reaction. In connection to these, the different cytotoxicities of 1 and 1a were also evaluated on four human liver cancer cells (SMMC‐7721, Bel‐7402, MHCC97 and Hep3B) by the MTT assay.

Synthesis and Crystal Structure of Amino Acid Modified NDI Lanthanide Coordination Complex

“…The confocal laser scanning microscopy images of complex is recorded using CLSM (FV 1000) and the complex has regular blue clavate structure (Figure ). Three‐dimensional rare earth coordination polymers have important application both in smart drug carrier and anti‐cancer activity . This single crystal has strong blue fluorescence and stable 3D MOFs structure, it may be further applied in biological and medical research.…”

Sonochemical Synthesis of Differently‐Sized Nanoparticles of a Silver(I) Compound: An Optical, Anticancer, and Thermal Activity Evaluation Study

“…[36] Upon introduction into cell culture media, macromolecules such as proteins and/or lipids will rapidly adsorb onto the nanoparticles (NPs) surface. [37] This event, coupled with the dynamic environment (i. e. high salt concentration, presence of electrolytes or other molecules, shifting pH), can result in a number of effects on NPs including colloidal destabilization and NP aggregation, competitive adsorption/desorption of macromolecules resulting in the loss of stabilizing ligands on the NP's surface, and NP dissolution. [38] Nevertheless, nanoparticles become activated once they enter the cell.…”

Asymmetric Cyanosilylation of Aldehydes by a Lewis Acid/Base Synergistic Catalyst of Chiral Metal Clusters

“…Among the various artificial catalysts, metal clusters that include an independent bridging oxygen atom and unsaturated coordination of metal sites in the structure, which combine to provide ideal bifunctional catalytic sites of Lewis acid and Lewis base, are of high significance . In addition, the well-defined structure of the metal clusters is conducive for the study of catalytic mechanism, which can provide insight into the rational design of diversified metal clusters. − In particular, chiral metal clusters bearing Lewis acid and Lewis base sites are regarded as a new class of synergistic catalysts for asymmetric catalysis.…”

“…39−41 Among the various artificial catalysts, metal clusters that include an independent bridging oxygen atom and unsaturated coordination of metal sites in the structure, which combine to provide ideal bifunctional catalytic sites of Lewis acid and Lewis base, are of high significance. 42 In addition, the well-…”