腙
荧光
化学
组合化学
光化学
立体化学
量子力学
物理
作者
Yuanyu Yang,Pengyi Ma,Jian-Hua Xue,Dong-Dong Yang,Yongliang Shi,Xuan Zhao,Qi Ma
标识
DOI:10.1016/j.microc.2024.110495
摘要
Many Al3+ sensors have been reported in the literature, the lack of spectral features and poor coordination of Al3+ pose a significant challenge to detection. Herein, the design and synthesis of a Schiff's base (HL) sensor is reported, which exhibits a turn-on response to Al3+ in an aqueous solution, and the fluorescence color of HL from light green to cyan upon the addition of Al3+. The limit of detection (LOD) for Al3+ was determined to be 2.20 x 10−8 M. The mechanism for fluorescence sensing was revealed through the analysis of single-crystal X-ray diffraction, DFT, and UV–vis absorption spectra. HL gradually coordinated with Al3+ during the titration process, leading to the formation of HL-Al crystals. The outcome of this study resulted in the successful preparation and application of flexible and foldable films for visual detection of Al3+.
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