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以4-(N,N-二乙氧酰甲基)氨基苯甲醛和邻苯二胺为原料,首先得到了2-[4-N,N-二(乙氧酰甲基)氨基苯基]-1H-苯并咪唑。再将得到的苯并咪唑与5,11,17,23-四叔丁基-26,28-二羟基-25,27-二丁氧基杯[4]芳烃反应,合成了含氨基乙酸酯苯并咪唑杯[4]芳烃荧光分子探针L,并采用红外和核磁对所合成的化合物进行了结构表征和确认。通过紫外和荧光光谱实验研究表明,探针L在甲醇溶液中对Al3+具有选择性识别性能,且不受其他金属离子的干扰;当Al3+物质的量浓度增加到探针浓度的5倍时,探针L的荧光强度降低到最低值。Job’s曲线确定了探针与Al3+之间形成物质的量比为1∶1的金属配合物。
Using 4- (N, N-diethoxymethyl) aminobenzaldehyde and o-phenylenediamine as starting materials, 2- [4-N, N-bis (ethoxycarbonylmethyl) aminophenyl] -1H-benzimidazole. The obtained benzimidazole was reacted with 5,11,17,23-tetra-tert-butyl-26,28-dihydroxy-25,27-dibutoxycalix [4] arene to synthesize an aminoacetate Benzimidazole calix [4] arene was synthesized and the structure of the synthesized compounds was confirmed by IR and NMR. The results of UV and fluorescence spectroscopy show that the probe L has a selective recognition of Al3 + in methanol solution without interference from other metal ions. When the concentration of Al3 + is increased to 5 times the concentration of probe, The fluorescence intensity of the needle L is reduced to the lowest value. The Job’s curve defines the metal complex with a 1: 1 ratio of material formed between the probe and Al3 +.