一种CdⅡ-MOF作为传感Fe(Ⅲ)和Cr(Ⅵ)的多响应荧光探针  

One CdⅡ-MOF as a multi-responsive fluorescent probe for sensing Fe(Ⅲ)and Cr

作　　者：安燕燕 卢丽萍[2] 朱苗力[2] 􀃱AN Yan-Yan;LU Li-Ping;ZHU Miao-Li(Department of Materials and Chemical Engineering,Taiyuan University,Taiyuan 030032,China;Key Laboratory of Chemical Biology and Molecular Engineering of the Education Ministry,Institute of Molecular Science,Shanxi University,Taiyuan 030006,China)

机构地区：[1]太原学院材料与化学工程系,太原030032 [2]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

出　　处：《无机化学学报》2023年第5期939-946,共8页Chinese Journal of Inorganic Chemistry

基　　金：financially supported by the National Natural Science Foundation of China(Grant No.21671124);the young project of Taiyuan University(Grant No.21TYKQ20)。

摘　　要：通过水热法合成了一种金属有机骨架[Cd_(3)(L)_(2)(H_(2)O)_(9)]·9H_(2)O(MOF1),其中H_(3)L=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。MOF1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,MOF1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。Onemetal-organicframework[Cd_(3)(L)_(2)(H_(2)O)_(9)]·9H_(2)O(MOF1),whereH_(3)L=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(Ⅲ)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.CCDC:1999720.

关 键 词：5-(((4-羧基苯基)氧基)甲基)苯-1 3-二甲酸 Cd^(Ⅱ)配合物 晶体结构 荧光探针 

分 类 号：O614.242[理学—无机化学]