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Turn-off/on fluorescent sensors for Cu2+ and ATP in aqueous solution based on tetraphenylethylene derivative
作者:Lai-Yao Geng, Yang Zhao, Edward Kamya, Jintang Guo, Bin Sun, Yakai Feng, Meifang Zhu and Xia
关键字:fluorescent sensor
论文来源:期刊
具体来源:Journal of Materials Chemistry C
发表时间:2019年
Two novel fluorescent sensors based on tetraphenylethylene derivative (TPE-COOH) were designed and prepared for rapid detection of cupric ion and adenosine triphosphate (ATP) in 100% aqueous solution. The properties of the sensors were elucidated by UV-vis absorption spectra, photoluminescence spectra, scanning electron microscopic and dynamic light scattering experiments. The results reveal that TPE-COOH suspension had specific selectivity for cupric ion due to the disassembly of the TPE-COOH aggregates. Moreover, the introduction of ATP into TPE-COOH/Cu2+ solution led to the re-assembly of TPE-COOH on account of the competitive binding of ATP with Cu2+. Accordingly, the sensitive, selective and fast recognition of ATP can be realized by “turn-on” fluorescent response. In addition, TPE-COOH compound can also enable the fabrication of test strip, which provides a low cost, simple and flexible way to detect trace amounts of Cu2+ and ATP in aqueous solutions or organisms.