Metal organic frameworks based on mixed ligands: Syntheses, structures and selective detection of nitro explosive TNP, metal ions Fe3+ Cu2+ and CrO42-
作者:Wen-Hui Yao、Xian-Gui Mu、Chun-Yu He、Yan-Hong Zhang
DOI:10.1016/j.molstruc.2023.135886
日期:2023.10
analysis (TGA). The results suggest that the linkage of different ligands with metal ions affords a 4-connected layer. And these 2D networks are extended to the final 3D supramolecular architectures by CH∙∙∙π stacking interactions. Fluorescence sensing measurements showed that MOF 1 can detect TNP, Fe3+, Cu2+ and CrO42− ions with high selectivity and sensitivity. In addition, their possible quenching mechanisms
三个新的 MOF [Cd(2,5-bipi)(5-hip)] n (1)、[Mn(2,5-bipi)(1,3-bdc)] n (2) 和 [Co(2 ,5-bipi)(1,3-bdc)(DMF)] n (3) (2,5-bipi = 2,5-双(1-咪唑)吡啶,5-H 2 hip = 5-羟基间苯二甲酸, 1,3-H 2 bdc = 间苯二甲酸) 已在溶剂热条件下成功合成。通过元素分析、红外光谱、X射线单晶衍射、粉末X射线衍射(PXRD)、热重分析(TGA)对其进行了表征。结果表明,不同配体与金属离子的连接提供了一个 4-连接层。这些 2D 网络通过 C 扩展到最终的 3D 超分子结构H∙∙∙π 堆叠相互作用。荧光传感测量表明,MOF 1 可以高选择性和灵敏度地检测TNP、Fe 3+、Cu 2+和CrO 4 2-离子。此外,还详细研究了它们可能的淬火机制。