Kumar Sandeep, Ma Shixuan, Mohan Brij, Li Shuangshuang, Ren Peng
School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China.
Inorg Chem. 2022 Sep 19;61(37):14778-14786. doi: 10.1021/acs.inorgchem.2c02215. Epub 2022 Sep 7.
A highly symmetric bis-triazole-pyridine-based organic ligand, i.e., 3,5-di(4-1,2,4-triazol-4-yl)pyridine (), and Cu(II) salts were used to synthesize three cationic Cu(I) metal-organic frameworks (MOFs), namely, {[Cu(L)]·(NO)·(HO)} (), {[Cu(L)]·(BF)·0.5HO} (), and {[Cu(L)]·1.25(ClO)·HO} (). All three MOFs have nonbonded anions situated inside the pore spaces. Both and have a two-dimensional network structure, while has a three-dimensional structure. All three MOFs were characterized using Fourier transform infrared spectroscopy, elemental (C, H, and N) analysis, thermogravimetric analysis, and powder and single-crystal X-ray diffraction. Due to the presence of a Lewis basic pyridine moiety, these MOFs could serve as luminescent probes for the selective detection of Ce ions with excellent efficiency (10 M). The synthesis of Cu(I)-based MOFs and their use to detect Ce ions in water via a turn-on fluorescence process have rarely been reported. These MOFs are highly stable in water, are recyclable, and function efficiently at different pH values.
一种高度对称的基于双三唑吡啶的有机配体，即3,5-二(4-1,2,4-三唑-4-基)吡啶（），与铜(II)盐用于合成三种阳离子铜(I)金属有机框架（MOF），即{[Cu(L)]·(NO)·(HO)}（）、{[Cu(L)]·(BF)·0.5HO}（）和{[Cu(L)]·1.25(ClO)·HO}（）。所有这三种MOF在孔隙空间内都有非键合阴离子。和都具有二维网络结构，而具有三维结构。使用傅里叶变换红外光谱、元素（碳、氢和氮）分析、热重分析以及粉末和单晶X射线衍射对所有这三种MOF进行表征。由于存在路易斯碱性吡啶部分，这些MOF可作为发光探针用于以优异效率（10 M）选择性检测铈离子。基于铜(I)的MOF的合成及其通过开启荧光过程检测水中铈离子的应用鲜有报道。这些MOF在水中高度稳定、可回收，并且在不同pH值下均能高效发挥作用。
