新型杯[5]芳烃衍生物的合成及发光行为

Synthesis of Novel Calix[5]arene Derivative and Luminescence Behavior

本文合成了一种新型杯[5]芳烃衍生物5,11,17,23,29-五叔丁基-37,38,39,40,41-五羧甲氧基杯[5]芳烃,通过荧光光谱研究了其与铽(Ⅲ)离子形成1:1配合物的发光行为.结果表明,配合物的发光行为基于分子间能量转移,pH=8～10范围内荧光强度几乎没有变化,溶剂极性明显影响荧光的强度;通过紫外滴定和荧光滴定确定了体系的稳定常数.该主体化合物、铕(Ⅲ)离子和邻菲罗琳在无水乙腈中,于321nm激发波长下检测到铕(Ⅲ)的特征荧光.

A novel calix [ 5 ] arene derivative 5,11,17,23,29 - penta - tert - butyl - 37,38,39,40,41 - penta - calix [ 5 ] arene carboxylie acid（L） has been synthesized in this paper, and the luminescent behavior on formation 1：1 complex of L with terbium（ Ⅲ ） ion was investigated by means of fluorescence spectra. The results showed the terbium（ Ⅲ） ion emission was induced by intermolecular energy transfer in the complex, the fluorescence intensity was hardly changed over the pH range from 8 to 10 and the polarity of solvent had an obvious influence on fluorescence intensity. The stability constant（Ks） of the complex was determined by the UV and fluorescence spectral titration. The system of L, Eu3＋ and ophenathroline in anhydrous aeetonotrile shows emission for Eu3＋ with an excitation at wavelength 321nm.