A simple hydrazone as a multianalyte (Cu²⁺, Al³⁺, Zn²⁺) sensor at different pH values and the resultant Al³⁺ complex as a sensor for F⁻
2018
Wu, Wei-Na | Wu, Hao | Wang, Yuan | Mao, Xian-Jie | Liu, Bao-Zhong | Zhao, Xiao-Lei | Xu, Zhou-Qing | Fan, Yun-Chang | Xu, Zhi-Hong
A new colorimetric and fluorescence molecular chemosensor based on triazole hydrazone can be used as a multi-probe for selective detection of Al³⁺, Zn²⁺, and Cu²⁺ by monitoring changes in the absorption and fluorescence spectral patterns. Results show that Al³⁺ and Zn²⁺ ions can induce remarkable fluorescence enhancement at pH 6.0 and pH 10.0, respectively, while the addition of Cu²⁺ ions leads to a significant UV-visible absorption enhancement in the visible range at pH 6.0. In addition, the resultant Al³⁺ complex could act as an ‘on–off’ fluorescence sensor for F⁻. The fluorescence sensor was also used to monitor intracellular Al³⁺, Zn²⁺, and F⁻ in Hela cells.
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