新型杯[4]芳烃氨基苯酚类衍生物的合成及对La3 的选择性识别

设计合成了下缘连有氨基苯氧基结构的杯4]芳烃衍生物:5,11,17,23-四叔丁基-25-2-(2-氨基苯氧基)乙氧基]-27-(2-羟基乙氧基)-26,28-二羟基杯4]芳烃(化合物C),增加了与阳离子的结合位点,有利于通过配位作用对金属离子进行识别。化合物C的结构通过红外光谱、1H NMR、13C NMR和质谱进行了表征。通过紫外可见光谱和荧光发射光谱对化合物C与24种金属阳离子的络合作用进行了研究,结果发现,其对La3+有特殊的识别作用,化合物C与La3+的络合比为1∶1。

Synthesis and Preferential recognition to La3 of Novel amino-phenoxy calix[4]arene derivative

A novel aminophenol calix4]arene derivative was designed and synthesized in this article: 5,11,17,23-tert-butyl-25-2-(2-aminophenoxy)ethyoxyl]-27-(2-hydroxye -thoxyl)-26,28-bihydroxycalix4]arene, a functional group of amino-phenoxy structure was appended at the lower rim of calix4]arene, Increased the binding sites with cation and recognition capability metal ions by the effect of coordination. The novel compounds were characterized using the IR, 1H NMR, 13C NMR and MS. The complexation between the compounds and 24 of metal cations was studied the preferential recognition reaction of La3 was found via the result of fluorescence emission spectrum and UV-vis spectra. The stoichiometry of host guest complexation has been determined to be 1:1 by Fluorescence titration experiment and Uv titration experiment.