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以4,6-二正戊氧基-1,3-苯二磺酰氯和间苯二酚为原料,三乙胺作缚酸剂,二氯甲烷作溶剂,采取一步成环法合成了磺酸酯桥联杯[4]芳烃(SBC)。SBC的结构用IR,~1 H-NMR,~(13) C-NMR,MALDI-TOF等进行了确认。利用紫外光谱分析的方法研究了对Ca~(2+)、Pb~(2+)及部分过渡金属等20种金属离子的识别。结果发现:SBC对Sn~(2+)显示出一定的选择性,由于Sn~(2+)和Bi ~(3+)协同作用的影响,在SBC-Sn~(2+)的体系中加入Bi ~(3+),紫外吸收光谱在325nm左右的吸收增强了许多,这说明SBC对Bi ~(3+)显示出优于Sn~(2+)的较好选择性。
Using 4,6-di-n-pentyloxy-1,3-benzenedisulfonyl chloride and resorcin as raw materials, triethylamine as acid-binding agent and dichloromethane as solvent, one-step synthesis of sulfonic acid Ester bridged calix [4] arene (SBC). The structure of SBC was confirmed by IR, ~ 1 H-NMR, ~ (13) C-NMR, MALDI-TOF and the like. The identification of 20 kinds of metal ions such as Ca ~ (2 +), Pb ~ (2+) and some transition metals were studied by UV spectroscopy. The results showed that SBC showed a certain selectivity to Sn 2+. Due to the synergic effect of Sn 2+ and Bi 3+, SBC-Sn 2+ The absorption of Bi ~ (3+) in UV absorption spectrum at 325nm increased a lot, which shows that SBC has better selectivity to Bi ~ (3+) than Sn ~ (2+).