摘要
以合成的三种的咪唑[4,5,f]-1,10-菲咯啉衍生物为客体,以瓜环(cucurbit[n]uril n=6~8)为主体,利用^1H NMR技术,荧光光谱和紫外吸收光谱方法,测试了主客体相互作用形式、形成包结物的结构特征及其光学性质,三种方法得到的结果相同。研究表明,六元瓜环(Q[6])仅能与2-(4-甲基苯基)-咪唑-[4,5,f]菲咯啉(W1)盐酸盐相互作用(包结比为1:1);七元瓜环(Q[7])与三种客体2-(4-甲基苯基)-咪唑-[4,5,f]菲咯啉,2-(2-甲基苯基)-咪唑-[4,5,f]菲咯啉(W2)以及2-(3-甲氧基苯基)-咪唑-[4,5,f]菲咯啉(W3)的盐酸盐均以1:1的物质的量比发生相互作用;而八元瓜环(Q[8])除与W1形成的是1:2的包结物外,与另外两种客体W2,W3也是形成1:1的包结配合物。
The interaction structures and optical properties of host-vip of cucurbit[n=6-8]urils with synthesized three imidazo- [4,5, f] 1,10-phenathroline derivates were investigated by using ^1 H NMR technique, fluorescence spectrophotometry, and ultraviolet spectrophotometry. The experimental results reveal that cucurhit [6] uril (Q[6]) can only interact with vip salt of 2-(4- methyl)-phenyl-imidazo-[4,5, f]1,10-phenathroline (W1) with a ratio of 1 : 1 ; however, cucurbit [7] uril (Q[7]) can interact with all three vip salts of 2-(4-methylphenyl)-imidazo-[4,5, f]1, 10-phenathroline(W1 ), 2-(2-methylphenyl)-imidazo-[4,5, f] 1,10-phenathroline(W2), and 2-(3-methyloxyl phenyl)-imidazo-[4,5, f] 1,10-phenathroline(W3) with the same ratio of 1 : 1 ; cucurbit [8] uril (Q[8]), except interaction with W1 with a ratio of 1 : 2, can also interact with W2 and W3 with a ratio of 1:1.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2006年第3期499-504,共6页
Spectroscopy and Spectral Analysis
基金
国家自然科学基金项目(200261002)
贵州省重点项目(20023004)
国际科技合作重点计划项目(2003DF000030)
贵州省省长基金
贵州省科技厅人才培养基金(20020204)资助