A novel reaction-based fluorescent probe for sensitive and selective detection of Cu2+

作者：Ren, Aishan; Zhu, Dongjian^*; Xie, Wei; He, Xingcun; Duan, Zhenhua; Luo, Yanghe; Zhong, Xing; Song, Mubo; Yan, Xiaowei^*

来源：Inorganica Chimica Acta, 2018, 476: 136-141.

DOI：10.1016/j.ica.2018.02.015

• Copper ion
• 6-Acetyl-2-hydroxynaphthalene
• Fluorescent probe
• Turn-on

A novel reaction-based fluorescent probe (2) for Cu2+ was designed and synthesized. 2 exhibited remarkable fluorescence enhancement (65-fold) after the addition of Cu2+. Base on the absorption spectra, fluorescence spectra, ESI-MS and H-1 NMR spectra analysis, the fluorescence response was attributed to Cu2+-promoted hydrolysis of the picolinate moiety to yield a highly fluorescent product, 6-acetyl-2-hydroxynaphthalene (1). Moreover, 2 not only displayed a rapid response time (within 6 min), high sensitivity (detection limit of 8.5 nM), and high selectivity for Cu2+ over other metal ions, but also could detect Cu2+ by absorption spectra, fluorescence spectra, even an obvious fluorescence color change at room temperature.

• 出版日期2018-5-1
• 单位贺州学院