吡啶羧酸铜(Ⅱ)配合物的合成、表征及应用性能

摘要/Abstract

摘要： 以2-吡啶甲酸(2-Hpic)、吡啶-2,6-二甲酸(2,6-H₂pda)为主配体,咪唑(Him)、2-甲基咪唑(2-Hmim)为辅助配体,制备了两例Cu(Ⅱ)配合物[Cu(pic)(im)(Him)]·2H₂O(1)和[Cu(2,6-pda)(2-Hmim)(H₂O)₂](2-Hmim)(2),用元素分析、X射线粉末衍射、红外光谱和热分析对配合物进行了表征。用制得的Cu(Ⅱ)配合物作为前驱体,分别制备了纳米氧化铜,并探究了光催化降解亚甲基蓝(MB)的性能,实验结果表明所得纳米氧化铜均能够很好地降解MB染料,且具有良好的稳定性。此外,研究了Cu(Ⅱ)配合物的抑菌性能,发现它们对革兰氏阳性菌和革兰氏阴性菌都有一定的抑菌效果,尤其是配合物1对大肠杆菌的抑菌圈直径达到16 mm,且两种配合物对革兰氏阴性菌表现出高药敏效果。

关键词: 吡啶羧酸, Cu(Ⅱ)配合物, 纳米氧化铜, 光催化降解, 抑菌性能

Abstract: Two complexes [Cu(pic)(im)(Him)]·2H₂O (1) and [Cu(2,6-pda)(2-Hmim)(H₂O)₂](2-Hmim) (2) were synthesized using 2-pyridine carboxylic acid and (2-Hpic) pyridine-2,6-dicarboxylic acid (2, 6-H₂pda) as main ligand, imidazole or 2-methylimidazole as auxiliary ligand. The complexes were characterized by elemental analysis, X-ray powder diffraction, infrared spectroscopy and thermogravimetric analysis. Nano-copper oxide was prepared with the copper(Ⅱ) complexes as precursors and their photocatalytic degradation of methylene blue (MB) was investigated. The experimental results show that the copper oxide can effectively degrade MB dye and has good stability. In addition, the antibacterial properties of the copper(Ⅱ) complexes were studied, and it is found that they have certain antibacterial effects on both Gram-positive and Gram-negative bacteria. In particular, the inhibition zone diameter of the complex 1 against E. coli reaches 16 mm, and the complexes show high drug sensitivity to Gram-negative bacteria.

Key words: pyridine carboxylic acid, Cu(Ⅱ) complex, nano-copper oxide, photocatalytic degradation, antibacterial activity

中图分类号:

O614.12

罗鹏, 姜茜, 卢凤阳, 钟国清. 吡啶羧酸铜(Ⅱ)配合物的合成、表征及应用性能[J]. 人工晶体学报, 2024, 53(12): 2160-2166.

LUO Peng, JIANG Xi, LU Fengyang, ZHONG Guoqing. Synthesis, Characterization and Application of Copper (Ⅱ) Complexes Containing Pyridine Carboxylate[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2024, 53(12): 2160-2166.

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