一种新型喹啉基荧光比色化学传感器，用于灵敏且选择性地“开-关”检测铅离子。
A new quinoline-based fluorescent-colorimetric chemosensor for sensitive and selective "on-off" detection of Pb ions.
作者信息
Sharma Vanshika, Dutta Srishti, Sahu Devanand, Pandey Abhilash, Kumar Dishen, Das Sanchita, Patra Goutam Kumar
机构信息
Department of Chemistry, Guru Ghasidas Vishwavidyalaya Bilaspur C.G India
Department of Chemistry, National Institute of Technology Rourkela Odisha India.
出版信息
RSC Adv. 2025 Feb 10;15(6):4236-4249. doi: 10.1039/d4ra08193e. eCollection 2025 Feb 6.
For the first time, a novel mono Schiff base of a quinoline-based reversible fluorescent-colorimetric receptor (L) has been designed for the detection of Pb ions in a semi-aqueous medium. The receptor L exhibited a very good selective fluorescent-colorimetric quick on-off response when exposed to Pb. The colorimetric assay showed a sensitivity of 1.2 × 10 M, while the fluorescent assay exhibited a sensitivity of 9.9 × 10 M for Pb. A 1 : 1 stoichiometric complexation between L and Pb was determined using ESI-MS spectra and Job's plot measurements. Pb was successfully measured using receptor L in both real samples and in an aqueous solution of the protein bovine serum albumin, as well as in the construction of an INHIBIT-type molecular logic gate.
首次设计了一种基于喹啉的新型单席夫碱可逆荧光比色受体（L），用于在半水介质中检测铅离子。受体L在暴露于铅时表现出非常好的选择性荧光比色快速开关响应。比色测定对铅的灵敏度为1.2×10⁻⁶ M，而荧光测定对铅的灵敏度为9.9×10⁻⁷ M。使用电喷雾电离质谱（ESI-MS）光谱和乔布氏图测量确定了L与铅之间1:1的化学计量络合。使用受体L在实际样品、蛋白质牛血清白蛋白的水溶液中以及在构建抑制型分子逻辑门时成功测定了铅。
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