Bifunctional design of stable metal-organic framework bearing triazole–carboxylate mixed ligand: Highly efficient heterogeneous catalyst for knoevenagel condensation reaction under mild conditions
作者:Feixiong Liu、Sandeep Kumar、Shuangshuang Li、Hengzhi You、Peng Ren、Limin Zhao
DOI:10.1016/j.catcom.2020.106032
日期:2020.7
A highly water stable zinc metal–organic framework (ZnMOF), [Zn(HL)2]}n, was synthesized using a triazole–carboxylate-based mixed ligand (L = 5-(4H-1,2,4-triazol-4-yl)isophthalic acid). A 2D MOF was formed by hydrothermal synthesis, and extended to a 3D supramolecular network through strong hydrogen bonding. This MOF was fully characterized by Fourier-transformation infrared spectroscopy, thermogravimetric
使用三唑-羧酸盐基混合配体(L = 5-(4H-1,2,4-三唑)合成具有高度水稳定性的锌金属-有机骨架(ZnMOF)[Zn(HL)2 ]} n -4-基)间苯二甲酸)。通过水热合成形成2D MOF,并通过强氢键扩展到3D超分子网络。通过傅里叶变换红外光谱,热重分析,单晶X射线衍射(XRD),粉末XRD和元素分析对MOF进行了充分表征。由于d 10这样的ZnMOF结构,其发光性能均适宜CN的传感-从荧光结果推断,离子高于其他阴离子。然而,关于催化机理,这ZnMOF表现出很强的与CN反应的能力- ,这可能是由于COOH基团之间的氢键键合,而不协调。这与CN交互行为-离子使ZnMOF使用丙二腈和醛衍生物作为在温和条件下反应物的Knoevenagel缩合一个有前途的非均相催化剂。所有反应均在水中作为绿色溶剂进行。