This manuscript studies the fluorescent property of 3-[(2-hydroxy-1-naphthyl)methylideneamino]benzoic acid (H2L). Fluorescent spectra show that in different solvents, H2L displays different fluorescent properties, which can be attributed to the interaction between the solvents and H2L. Further study indicates that H2L exhibits a highly selective and sensitive recognition for Hg2+ ions in dimethylsulfoxide (DMSO), Al3+ ions in methanol and N,N'-dimethylformamide/water (DMF/H2O, 1/1, v/v). The bonding modes and bonding ratio of H2L and metal ions in different solvents are explored by Job's plot, 1H NMR titration, and electrospray ionization mass spectrometry (ESI-MS). The probable mechanisms were discussed.

中文翻译：

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3-[（2-羟基-1-萘基）亚甲基氨基]苯甲酸的荧光性质及其在Hg2 +和Al3 +离子荧光化学传感器中的应用。

该手稿研究了3-[（2-羟基-1-萘基）亚甲基氨基]苯甲酸（H2L）的荧光性质。荧光光谱表明，在不同的溶剂中，H2L显示出不同的荧光特性，这可以归因于溶剂与H2L之间的相互作用。进一步的研究表明，H2L对二甲基亚砜（DMSO）中的Hg2 +离子，甲醇和N，N'-二甲基甲酰胺/水（DMF / H2O，1/1，v / v）中的Al3 +离子具有高度选择性和敏感性。通过Job's图，1H NMR滴定和电喷雾电离质谱（ESI-MS）探索了H2L与金属离子在不同溶剂中的键合模式和键合比。讨论了可能的机制。