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报道了重水溶液中α 环糊精与对甲酚、间甲酚发生包结作用的1 HNMR研究结果 .实验发现 ,尽管未包结的α 环糊精和包结后的α 环糊精疏水腔中的同类质子有着不同的化学位移 ,但1 HNMR只检测到一个峰 ,且峰的位置随包结程度的变化而异 .由1 HNMR的数据计算得到了α 环糊精在不同包结程度下的平均几何结构和平衡常数 ,描述了客体在主体腔中进入深度动态变化的情形 ,并和 β 环糊精的结果进行了比较 .
The results of 1 H NMR study on entrapment of α-cyclodextrin with p-cresol and m-cresol in heavy aqueous solution were reported. Although it was found that although the uncyclized α-cyclodextrin and the entrapped α-cyclodextrin hydrophobic cavity In the same kind of protons have different chemical shifts, but only a peak was detected by 1 HNMR, and the location of the peak varies with the degree of inclusion.The degree of inclusion of α-cyclodextrin at different inclusion levels was calculated from the 1 H NMR data The average geometric structure and equilibrium constants of the guest are described, and the dynamic depth of the guest in the main cavity is described. The results are compared with that of β-cyclodextrin.