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该文以二溴丁氧基杯[4]芳烃和取代的1H-咪唑为原料合成了乙氧甲酰甲氨基咪唑杯[4]芳烃(M),采用红外、核磁、质谱对所合成化合物进行了结构表征;采用紫外吸收光谱和荧光发射光谱,在体积比为3∶7的甲醇/水混合溶液(Tris-HCl缓冲溶液,pH=6.5)中考察了M对常见金属离子的识别性能。结果发现,化合物M以1∶1的络合比对Al~(3+)进行选择性识别,且识别行为不受其他常见金属离子的干扰;化合物M以1∶2的络合比与Ag~+络合,当Al~(3+)作为干扰离子且浓度高于Ag~+时,对M与Ag~+的识别产生干扰。即,当Al~(3+)和Ag~+同时存在时,化合物M与Al~(3+)具有更好的识别选择性。
In this paper, ethoxymethylamidomethyl imidazo [4] arene (M) was synthesized from dibromobutoxy calix [4] arene and substituted 1H-imidazole. The synthesized compounds were characterized by IR, The structural characterization was carried out. The recognition properties of M for common metal ions were investigated by ultraviolet absorption spectroscopy and fluorescence emission spectroscopy in a methanol / water mixed solution (Tris-HCl buffer solution, pH = 6.5) with a volume ratio of 3: 7. The results showed that compound M selectively recognized Al ~ (3+) at a complex ratio of 1: 1, and its recognition behavior was not disturbed by other common metal ions. Compound M was complexed with Ag ~ + Complexation. When Al ~ (3+) is used as the interference ion and the concentration is higher than Ag ~ +, the recognition of M and Ag ~ + will be disturbed. That is, when Al ~ (3+) and Ag ~ + coexist, compound M has better recognition selectivity with Al ~ (3+).