摘要
利用紫外吸收光谱法、荧光光谱法和1H NMR技术等现代分析方法,测试了七元瓜环(cucurbit[7]urils)与吖啶、9-氨基吖啶、3,6-二氨基吖啶(分别记为g1、g2、g3)的主客体作用。实验结果表明:在酸性或中性条件,用三种方法均能观察到七元瓜环与客体的相互作用,但在强碱性条件下,用上述方法观察不到主客体的相互作用,利用光谱法得到七元瓜环与g1、g2、g3均形成物质的量之比为1∶1的包合物,计算出相应的平衡常数,并利用核磁表征考察了主客体可能的作用模式。
Interaction between cucurbit[ 7 ] uril （Q[ 7 ] ） with the hydrochloride salts of acridine derivatives： acridine, 9-amino-acridine, 3,6-diamino-acridine （g1, g2, g3） in aqueous solution were investigated by using UV absorption spectroscopy, fluorescence spectroscopy and ^1H NMR spectra. The experimental results revealed that three vips could form inclusion complexes with Q[ 7] in acid and neutral solution, however, in alkaline condi- tions （pH 〉 12）, we could not observe the interaction between three vips and Q[ 7 ]. Absorption spectrophotometric and fluorescence spectroscopic analysis in aqueous solution defined the stability of the host-vip inclusion complexes with a ratio of 1： 1 form, the calculated binding constants were given based on the absorption spectrophotometric analysis, and the i H NMR spectra analysis established the same interaction model of the hostvip systems.
出处
《贵州大学学报（自然科学版）》
2010年第1期24-28,共5页
Journal of Guizhou University:Natural Sciences
基金
国家自然科学基金项目(20767001)
教育部春晖计划资助项目
关键词
七元瓜环
吖啶类化合物
核磁共振技术
紫外吸收光谱法
荧光光谱法
cucurbit[ 7 ] uril
acridine derivatives
^1H NMR
UV absorption spectrophotometric
fluorescence spectroscopic
