摘要/Abstract

以二茂铁甲醛为起始原料，与邻氨基苯硫酚进行环合反应，得到产物2-二茂铁基苯并噻唑，然后进行乙酰化反应，最终得到2-（1'-乙酰基二茂铁基）苯并噻唑（FcSO）探针分子.谱学表征和X射线单晶衍射分析证实了探针FcSO的晶体和分子结构.通过紫外可见光谱、荧光光谱和电化学分析三种分析方法，详细研究了探针FcSO对溶液中三价金属离子Al³⁺，Cr³⁺，Fe³⁺的识别性能.研究结果表明，三种分析方法均能对特定三价金属离子进行有效识别，荧光分析方法抗干扰能力较强，对三价金属离子Al³⁺，Cr³⁺，Fe³⁺的最低检测限分别是7.456×10^-6，3.72×10^-6和1.35×10^-5 mol/L.¹H NMR研究结果表明，探针FcSO分子结构中的乙酰基、二茂铁基和苯并噻唑基在识别三价金属离子Al³⁺，Cr³⁺，Fe³⁺过程中均发挥了重要作用.
关键词: 晶体结构, 乙酰基二茂铁苯并噻唑探针, 多种识别方法, 三价金属离子
2-(1'-Acetyl-ferrocenyl) benzothiazole (FcSO) probe was synthesized by the acetylization reaction of 2-ferrocenyl benzothiazole, which was obtained from the cyclization reaction of ferrocenecarboxaldehyde with 2-aminothiophenol. Crystal and molecule structures of FcSO probe were characterized by spectra methods and X-ray single crystal diffraction analysis. The recognition ability to Al³⁺, Cr³⁺, Fe³⁺ ions of FcSO probe was researched by three analytical methods of UV-Vis, fluorescence and electrochemistry. The results show that the recognition to Al³⁺, Cr³⁺, Fe³⁺ ions of FcSO probe is effective via three channels, and the detection limits of FcSO probe to Al³⁺, Cr³⁺, Fe³⁺ ions are 7.456×10^-6, 3.72×10^-6 and 1.35×10^-5 mol/L, respectively. ¹H NMR research results indicate that the acetyl, ferrocenyl and benzothiazole groups of FcSO probe play important roles in recognizing Al³⁺, Cr³⁺, Fe³⁺ ions.
Key words: crystal structure, acetyl-ferrocenyl-benzothiazole probe, multi recognition method, trivalent metal ion


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