Zhang Yang, Xue Lei, Xu Yang, Zeng Zihan, Wang Xin, Wang Haibin
College of Chemistry and Chemical Engineering Ningxia Normal University, 756000, Guyuan, Ningxia, PR China.
College of Chemistry and Chemical Engineering Ningxia Normal University, 756000, Guyuan, Ningxia, PR China.
Spectrochim Acta A Mol Biomol Spectrosc. 2023 Dec 5;302:123013. doi: 10.1016/j.saa.2023.123013. Epub 2023 Jun 16.
Developing highly sensitive fluorescent probe for Al and HO detection is highly desirable, due to aluminum toxicity poses a significant threat to public health. On the other hand, the determination of water content holds immense significance in a wide range of fields such as food processing, pharmaceutical manufacturing. In this paper, a novel acylhydrazone-based fluorescent probe P was successfully synthesized and characterized for the sequential detection of Al and water in alcohols. The probe P exhibited a remarkable "turn-on" response towards Al by emitting yellow fluorescence at 567 nm, with high selectivity and large Stokes shift (147 nm). Meanwhile, the in situ formed P-Al complex demonstrated significant solvatofluorochromic characteristic, which could be utilized as a second probe for detecting water via fluorescence quenching with low detection limit in alcohols (0.008%, methanol; 0.013%, ethanol; 0.013%, isopropanol; 0.037%, n-butanol; vol.%) and acetonitrile (0.072%, vol.%). Moreover, the P-Al complex was able to detect the alcoholic strength of Chinese Baijiu without the interference of other alcohols, providing an excellent recovery rate (100.0-107.0%). Different Chinese Baijius, with various alcoholic strength, could be distinguished by simple test strips. Furthermore, the P-Al complex could also analyze the water content in organic solvents .
由于铝毒性对公众健康构成重大威胁，开发用于检测铝离子和水的高灵敏度荧光探针非常必要。另一方面，水含量的测定在食品加工、制药制造等广泛领域具有极其重要的意义。本文成功合成并表征了一种新型的基于酰腙的荧光探针P，用于在醇类中顺序检测铝离子和水。探针P对铝离子表现出显著的“开启”响应，在567 nm处发射黄色荧光，具有高选择性和大斯托克斯位移（147 nm）。同时，原位形成的P-Al配合物表现出显著的溶剂化荧光变色特性，可作为第二种探针，通过荧光猝灭在醇类（甲醇中为0.008%；乙醇中为0.013%；异丙醇中为0.013%；正丁醇中为0.037%，体积分数）和乙腈（0.072%，体积分数）中以低检测限检测水。此外，P-Al配合物能够在不受其他醇类干扰的情况下检测中国白酒的酒精度，回收率极佳（100.0 - 107.0%）。不同酒精度的中国白酒可用简单的试纸区分。此外，P-Al配合物还可分析有机溶剂中的水含量。
