Cucurbit[8]uril/cucurbit[7]uril controlled off/on fluorescence of the acridizinium and 9-aminoacridizinium cations in aqueous solution

被引：68

作者：

Wang, Ruibing

Yuan, Lina

Ihmels, Heiko

Macartney, Donal H.

机构：

[1] Queens Univ, Dept Chem, Kingston, ON K7L 3N6, Canada

[2] Univ Siegen, D-57072 Siegen, Germany

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2007年 / 13卷 / 22期

关键词：

acridizinium cations; cucurbiturils; fluorescence; hostguest systems; supramolecular chemistry;

D O I：

10.1002/chem.200700199

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The blue fluorescence of acridizinium bromide (ADZ(+)) and the green fluorescence of 9-aminoacridizinium bromide (AADZ(+)) in aqueous solutions can be almost entirely switched off upon the double inclusion of these guests in the. cavity of cucurbit[8]uril (CB[8]) owing to the formation of a nonfluorescent, non-covalent dimer complex, and then fluorescence can be effectively restored by adding cucurbit[7]uril (CB[7]) to the complex because it competitively extracts the fluorophores out of the CB[8] cavity.

引用

页码：6468 / 6473

页数：6

共 60 条

[21] Complexation of ferrocene derivatives by the cucurbit[7]uril host: A comparative study of the cucurbituril and cyclodextrin host families [J].