Design of a fluorescent dye for indicator displacement from cucurbiturils:: A macrocycle-responsive fluorescent switch operating through a pKa shift

被引:166
作者
Praetorius, Antonia [1 ]
Bailey, David M. [1 ]
Schwarzlose, Thomas [1 ]
Nau, Werner M. [1 ]
机构
[1] Jacobs Univ Bremen, Sch Sci & Engn, D-28759 Bremen, Germany
关键词
D O I
10.1021/ol8016275
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The derivatization of 3-amino-9-ethylcarbazole with a diamino-alkyl anchor affords a fluorescent dye suitable for indicator displacement from cucurbituril macrocycles. The novel compound 1 shows, due to a complexation-induced pK(a) shift, a large and predictable dual fluorescence response (100-fold increase at 375 nm and 9-fold decrease at 458 nm) upon supramolecular encapsulation and a strong affinity for cation-receptor macrocycles, in particular cucurbit[6]uril (06). A direct application is presented by monitoring the enzymatic activity of lysine decarboxylase.
引用
收藏
页码:4089 / 4092
页数:4
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