一种Cd-MOF作为传感Fe(Ⅲ)和Cr(Ⅵ)的多响应荧光探针
One Cd-MOF as a multi-responsive fluorescent probe for sensing Fe(Ⅲ) and Cr(Ⅵ)
作者单位E-mail
安燕燕 太原学院材料与化学工程系, 太原 030032 anyanyan@tyu.edu.cn 
卢丽萍 山西大学分子科学研究所, 教育部化学生物和分子工程重点实验室, 太原 030006  
朱苗力 山西大学分子科学研究所, 教育部化学生物和分子工程重点实验室, 太原 030006 miaoli@sxu.edu.cn 
摘要: 通过水热法合成了一种金属有机骨架[Cd3(L)2(H2O)9]·9H2O (MOF 1),其中H3L=5-(((4-羧基苯基)氧基)甲基)苯-1,3-二甲酸,并通过单晶X射线衍射、粉末X射线衍射和元素分析对其进行了表征。MOF 1表现为一个二维微孔结构,孔隙可利用体积为22.4%。荧光性能研究表明,MOF 1可以用作检测Fe(Ⅲ)和Cr(Ⅵ)的荧光传感器。它具有高选择性和低检测限,而且不受其他离子的干扰。此外,通过金属有机骨架主体和目标分析物客体的紫外可见吸收光谱研究了主体配合物的选择性荧光猝灭机制。这种荧光猝灭的可能机制是荧光共振能量转移。
关键词: 5-(((4-羧基苯基)氧基)甲基)苯-1,3-二甲酸  Cd配合物  晶体结构  荧光探针
基金项目: 国家自然科学基金(No.21671124)和太原学院青年科研项目(No.21TYKQ20)资助。
Abstract: One metal-organic framework[Cd3(L)2(H2O)9]·9H2O (MOF 1), where H3L=5-(((4-carboxyphenyl)oxy)methyl) benzene-1,3-dicarboxylic acid, has been hydrothermally synthesized and characterized by single-crystal X-ray diffraction, powder X-ray diffraction, and elemental analysis. MOF 1 exhibits a 2D microporous structure with an accessible volume of 22.4%. Luminescent property studies reveal that MOF 1 can act as a promising luminescent sensor for detecting Fe(Ⅲ) and Cr(Ⅵ) with high selectivities and low detection limits, which are additionally free from the interference of other ions. Moreover, the mechanism of selective quenching was studied by measuring the UV-Vis absorption of the host metal-organic framework and the target analyte ions. The fluorescence resonance energy transfer is the possible mechanism involved in the quenching of the fluorescence intensity.
Keywords: 5-(((4-carboxyphenyl)oxy)methyl)benzene-1,3-dicarboxylic acid  Cd complex  crystal structure  fluorescence probe
投稿时间:2022-11-02 修订日期:2023-03-15
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安燕燕,卢丽萍,朱苗力.一种Cd-MOF作为传感Fe(Ⅲ)和Cr(Ⅵ)的多响应荧光探针[J].无机化学学报,2023,39(5):939-946.
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