Abstract：
A three-dimensional (3D) anionic cadmium-organic framework, namely [(CH3)2NH2][Cd1.5(DMTDC)2] ⋅ 2DMA ⋅ 0.5H2O (Cd-MOF; DMA=N,N-dimethylacetamide), was successfully synthesized under solvothermal conditions by using a linear thienothiophene-containing dicarboxylate ligand, 3,4-dimethylthieno [2,3-b]-thiophene-2,5-dicar-boxylic acid (H2DMTDC). Single-crystal X-ray diffraction analysis reveals that Cd-MOF exhibits a 3D anionic framework with pcu α-Po topology, featuring rectangle and rhombus-shaped channels along b- and c- axis direction. Cd-MOF demonstrates selective adsorption of cationic dyes over anionic and neutral dyes. Additionally, Tb3+-loaded Cd-MOF serves as a fast-response fluorescence sensor for the sensitive detection of Fe3+ ions with a low limit of detection (8.90×10-7 M) through fluorescence quenching.
摘要：
三维（3D）阴离子镉有机框架，即[（CH3）2NH2][Cd1.5（DMTDC）2]·2DMA·0.5H2O（Cd-MOF；DMA=N，N-二甲基乙酰胺)，通过使用线性含噻吩并噻吩的二羧酸配体在溶剂热条件下成功合成，3,4-二甲基噻吩并[2,3-b]-噻吩-2,5-二羧酸(H2DMTDC)。单晶X射线衍射分析表明，Cd-MOF表现出具有pcuα-Po拓扑的3D阴离子框架，具有沿b轴和c轴方向的矩形和菱形通道。Cd-MOF证明了阳离子染料相对于阴离子和中性染料的选择性吸附。此外,负载Tb3的Cd-MOF可作为快速响应的荧光传感器，用于通过荧光猝灭以低检测限（8.90×10-7M）灵敏检测Fe3离子。
