Musikavanhu Brian, Huang Zeping, Ma Quanhong, Liang Yongdi, Xue Zhaoli, Feng Lei, Zhao Long
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China.
Monash Suzhou Research Institute, Monash University, Suzhou Industrial Park, Suzhou 215000, China; Jiangsu Key Laboratory of Neuropsychiatric Diseases, Institute of Neuroscience, Soochow University, Suzhou 215123, China.
Spectrochim Acta A Mol Biomol Spectrosc. 2023 Nov 15;301:122961. doi: 10.1016/j.saa.2023.122961. Epub 2023 Jun 3.
A pyridine modified naphthol hydrazone Schiff base chemosensor, NaPy, was prepared in a two-step process to detect aluminum ion (Al) in different samples. The probe shows a turn-off emission response towards Al at a 1:1 binding stoichiometry via intramolecular charge transfer (ICT) mechanism, as validated by density functional theory (DFT) calculations and a series of spectroscopic measurements. The response time is slightly over one minute with a limit of detection (LOD) value of 0.164 µM, demonstrating the great sensitivity of the probe. It is also found that NaPy exhibits high selectivity towards Al and resists interference from seventeen other cations. Application investigations in paper strips, water samples and HeLa cells suggest that NaPy can be used as an efficient probe for sensing Al in real environmental samples and biosystems.
通过两步法制备了一种吡啶修饰的萘酚腙席夫碱化学传感器NaPy，用于检测不同样品中的铝离子（Al）。该探针通过分子内电荷转移（ICT）机制，以1:1的结合化学计量比显示对Al的猝灭发射响应，密度泛函理论（DFT）计算和一系列光谱测量验证了这一点。响应时间略超过一分钟，检测限（LOD）值为0.164 μM，表明该探针具有很高的灵敏度。还发现NaPy对Al具有高选择性，可抵抗其他十七种阳离子的干扰。在纸条、水样和HeLa细胞中的应用研究表明，NaPy可作为一种有效的探针，用于检测实际环境样品和生物系统中的Al。
