一种基于香豆素骨架的荧光化学传感器于水溶液中实现对Al3+和焦磷酸根(PPi)的连续识别
收稿日期: 2020-10-06
修回日期: 2020-10-28
网络出版日期: 2020-11-12
基金资助
山西省基础应用研究(201801D221087); 山西农业大学科技创新(2020BQ18); 山西省优秀博士来晋工作奖励(SXYBKY2019046); 山西省高等学校创新(2020L0140)
A Fluorescent Chemosensor Based on Coumarin for Squential Recognition of Al3+ and Pyrophosphate (PPi) in Aqueous Solution
Received date: 2020-10-06
Revised date: 2020-10-28
Online published: 2020-11-12
Supported by
Applied Basic Research Programs of Shanxi Province(201801D221087); Science and Technology Innovation Project of Shanxi Agricultural University(2020BQ18); Shanxi Excellent Doctor Grant Award(SXYBKY2019046); Science and Technology Innovation Project of Colleges and Universities(2020L0140)
合成了一种新型的荧光化学传感器(E)-N'-(3-((双(吡啶-2-亚甲基)氨基)甲基)-2-羟基-5-甲基亚苄基)-7-(二乙氨基)-2-氧代-2H-色烯-3-甲酰肼(1), 并通过1H NMR、13C NMR和ESI-MS对其结构进行表征, 利用紫外/荧光分光光度法研究了传感器1的传感性能. 结果表明: 传感器1于水中对Al3+表现出明显的荧光增强响应, 而配合物1-Al3+对PPi表现出明显的荧光淬灭响应. 传感器1对Al3+和焦磷酸根(PPi)的检测限分别为0.26和0.1 μmol/L, 配位比均为1∶1. 配位机理通过荧光滴定、核磁滴定和高分辨质谱进行了证实, 另外传感器 1的有效测试pH范围是2~10, 且循环响应测试可达4次.
孟宪娇 , 赵晋忠 , 张永坡 , 李志春 , 袁长春 , 马文兵 . 一种基于香豆素骨架的荧光化学传感器于水溶液中实现对Al3+和焦磷酸根(PPi)的连续识别[J]. 有机化学, 2021 , 41(3) : 1161 -1167 . DOI: 10.6023/cjoc202010007
A novel fluorescent chemosensor (E)-N'-(3-((bis(pyridin-2-ylmethyl)amino)methyl)-2-hydroxy-5-methylbenzyl- idene)-7-(diethylamino)-2-oxo-2H-chromene-3-carbohydrazide (1) has been synthesized and showed an obviously “off-on-off” fluorescence response toward Al 3+ and pyrophosphate (PPi) in aqueous solution. The detection limits of sensor 1 were 0.26 μmol/L to Al 3+ and 0.1 μmol/L to PPi, and the binding stoichiometry was 1∶1. In addition, the binding mechanism was further confirmed by fluorescence titration, nuclear magnetic titration and ESI-MS. The effective determination pH range for Al 3+ and PPi was from 2 to 10, and the cycle response test could reach 4 times.
Key words： coumarin; fluorescent chemosensor; Al3+; PPi; sequential recognition
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