2-(2-羟基苯基)-4,5-二苯基咪唑的合成及性能研究  

The synthesis and property study of 2-(2-hydroxyphenyl)-4,5-diphenyl imidazole

作　　者：苏小龙 田梦 谢莉莉 袁耀锋 SU Xiao-long;TIAN Meng;XIE Li-li;YUAN Yao-feng(Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Sciences, Baoji 721013, Shaanxi, China;College of Chemistry, Fuzhou University, Fuzhou 350108, Fujian, China)

机构地区：[1]宝鸡文理学院化学化工学院,陕西省植物化学重点实验室,陕西宝鸡721013 [2]福州大学化学学院,福建福州350108

出　　处：《宝鸡文理学院学报（自然科学版）》2022年第2期40-46,共7页Journal of Baoji University of Arts and Sciences(Natural Science Edition)

基　　金：陕西省自然科学基础研究青年项目(2020JQ-894);陕西省教育厅2019年度重点科学研究计划(重点实验室)(19JS007)。

摘　　要：目的合成4种2-(2-羟基苯基)-4,5-二苯基咪唑类化合物,并研究其阴离子识别性能。方法通过比较化合物与阴离子结合前后紫外-可见吸收光谱的变化,研究4种化合物识别阴离子的作用机制。结果化合物1和2的N-H键通过氢键作用络合F^(-)后,在318 nm处的吸收峰红移到339 nm,而与H_(2)PO_(4)^(-),AcO^(-),HSO_(4)^(-),Cl^(-),Br^(-)和I^(-)作用后,吸收光谱没有明显变化;化合物3和4与F^(-)结合后,会形成Cu-受体-阴离子三元配合物,导致吸收光谱发生轻微的蓝移,而加入H_(2)PO_(4)^(-),AcO^(-),HSO_(4)^(-)和I^(-)后,会使配合物分解。结论化合物1和2可选择性地识别F^(-)。Purposes—To synthesize 4 kinds of 2-(2-hydroxyphenyl)-4,5-diphenyl imidazole compounds and investigate anion binding properties.Methods—The anion selectivity of 4 kinds compounds was studied by UV-vis titration experiments.Results—The wavelength of the maximum absorption peak at 318 nm shifted to 339 nm after the complexation of N-H bond of compounds 1 and 2 with F^(-) via hydrogen bond,while the absorption spectra did not change significantly after compounds 1 and 2 react with H_(2)PO_(4)^(-),AcO^(-),HSO_(4)^(-),Cl^(-),Br^(-) and I^(-).However,Cu-receptor-anion-ternary-complex was formed after the complexation of compounds 3 and 4 with F^(-) thus resulting in a slight blue shift in the absorption spectrum,while the Cu complexes 3 and 4 may decompose after addition of H_(2)PO_(4)^(-),AcO^(-),HSO_(4)^(-) and Cl^(-).Conclusions—The compounds 1 and 2 can selectively detect F^(-) in CH_(3)CN.

关 键 词：咪唑 铜配合物 阴离子识别 氢键 

分 类 号：O625[理学—有机化学]