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Selective recognition and determination of phenylalanine by a fluorescent probe based on cucurbit[8]uril and palmatine
Analytica Chimica Acta ( IF 6.2 ) Pub Date : 2020-04-01 , DOI: 10.1016/j.aca.2020.01.007
Pei-Hui Shan 1 , Jie Zhao 2 , Xin-Yu Deng 2 , Rui-Lian Lin 3 , Bing Bian 4 , Zhu Tao 2 , Xin Xiao 1 , Jing-Xin Liu 3
Affiliation  

This paper demonstrated a simple and validated fluorescence enhancing method to selectively recognize and discriminate the amino acid phenylalanine (Phe). 1H NMR spectroscopy reveal that the palmatine (PAL) can be encapsulated into the cucurbit [8]uril (Q [8]) in aqueous solution to form stable 1:2 host-guest inclusion complex PAL2@Q [8], which exhibits moderate intensity fluorescence property. Interestingly, the addition of the Phe into the inclusion complex PAL2@Q [8] leads to dramatically enhancing of the fluorescence intensity. In contrast, the addition of any other natural amino acids into the inclusion complex PAL2@Q [8] gives no fluorescence variation. Furthermore, it is easy to detect the concentration of Phe in target aqueous solution according to the linear relationship between fluorescence intensity and concentration of the Phe.

中文翻译:

基于葫芦[8]脲和巴马汀的荧光探针选择性识别和测定苯丙氨酸

本文展示了一种简单且经过验证的荧光增强方法来选择性识别和区分氨基酸苯丙氨酸 (Phe)。1H NMR 谱表明,巴马汀 (PAL) 可以在水溶液中包封到葫芦 [8] uril (Q [8]) 中,形成稳定的 1:2 主客体包合物 PAL2@Q [8],表现出温和的强度荧光特性。有趣的是,将 Phe 添加到包合物 PAL2@Q [8] 中导致荧光强度显着增强。相比之下,将任何其他天然氨基酸添加到包合物 PAL2@Q [8] 中不会产生荧光变化。此外,根据荧光强度与 Phe 浓度的线性关系,很容易检测目标水溶液中 Phe 的浓度。
更新日期:2020-04-01
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