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Synthesis and fluorescence sensing of a highly sensitive and multi-response cadmium coordination polymer
Author NameAffiliationE-mail
REN Jing School of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Reaction Engineering, Laboratory of New Energy & New Function Materials, Yan'an University, Yan'an, Shaanxi 716000, China  
YAN Ruikui School of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Reaction Engineering, Laboratory of New Energy & New Function Materials, Yan'an University, Yan'an, Shaanxi 716000, China  
CHEN Xiaoli School of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Reaction Engineering, Laboratory of New Energy & New Function Materials, Yan'an University, Yan'an, Shaanxi 716000, China chenxiaoli003@163.com 
CUI Huali School of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Reaction Engineering, Laboratory of New Energy & New Function Materials, Yan'an University, Yan'an, Shaanxi 716000, China  
YANG Hua School of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Reaction Engineering, Laboratory of New Energy & New Function Materials, Yan'an University, Yan'an, Shaanxi 716000, China  
WANG Jijiang School of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Reaction Engineering, Laboratory of New Energy & New Function Materials, Yan'an University, Yan'an, Shaanxi 716000, China  
Abstract: A coordination polymer {[Cd(H2dpa)(bpy)]·3H2O}n (Cd-CP) was designed and hydrothermal synthesized based on 4-(2,4-dicarboxyphenoxy) phthalic acid (H4dpa), 2,2'-bipyridine (bpy) and Cd(NO3)2·4H2O. The structure was characterized by singlecrystal X-ray diffraction, powder X-ray diffraction, elemental analysis, and infrared spectroscopy. Cd-CP belongs to the monoclinic crystal system with the P21/c space group and performs in a 1D double-chain structure. The adjacent double chains further form a 3D supramolecular network structure through hydrogen bonding. Thermogravimetric analysis shows that Cd-CP has good thermal stability. Fluorescence analysis showed that Cd-CP had good choosing selectively and was sensitive to metal ions (Fe3+ and Zn2+), 2,4,6-trinitrophenylhydrazine (TRI), and pyrimethanil (Pth). Interestingly, when Cd-CP was used for fluorescence detection of metal ions, it was found to have a fluorescence quenching effect on Fe3+ but had an obvious enhancement effect on Zn2+. Therefore, we designed an“on-off-on”logic gate. In addition, the mechanism of fluorescence sensing has been deeply explored.
Keywords: coordination polymer  4-(2,4-dicarboxylic phenoxyl) phthalic acid  fluorescence sensing  logic gate
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REN Jing,YAN Ruikui,CHEN Xiaoli,CUI Huali,YANG Hua,WANG Jijiang.Synthesis and fluorescence sensing of a highly sensitive and multi-response cadmium coordination polymer[J].Chinese Journal of Inorganic Chemistry,2025,41(3):574-586.
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Chinese Journal of Inorganic Chemistry