Choe Donghwan, Kim Cheal
Department of Fine Chemistry, Seoul National University of Science and Technology (SNUT), Seoul 136-742, Korea.
Materials (Basel). 2021 Oct 25;14(21):6392. doi: 10.3390/ma14216392.
A novel acylhydrazone-based fluorescent sensor was designed and synthesized for consecutive sensing of Al and HPO. displayed fluorometric sensing to Al and could sequentially detect HPO by fluorescence quenching. The limits of detection for Al and HPO were determined to be 0.83 and 1.7 μM, respectively. The binding ratios of to Al and -Al to HPO were found to be 1:1. The sequential recognition of Al and HPO by could be repeated consecutively. In addition, the practicality of was confirmed with the application of test strips. The sensing mechanisms of Al and HPO by were investigated through fluorescence and UV-Visible spectroscopy, Job plot, ESI-MS, H NMR titration, and DFT calculations.
设计并合成了一种新型的基于酰腙的荧光传感器，用于连续检测铝离子（Al）和磷酸氢根离子（HPO）。该传感器对铝离子表现出荧光传感特性，并能通过荧光猝灭顺序检测磷酸氢根离子。铝离子和磷酸氢根离子的检测限分别确定为0.83 μM和1.7 μM。发现该传感器与铝离子和与铝离子结合后的产物与磷酸氢根离子的结合比均为1:1。该传感器对铝离子和磷酸氢根离子的顺序识别可以连续重复进行。此外，通过试纸应用证实了该传感器的实用性。通过荧光光谱、紫外可见光谱、Job曲线、电喷雾电离质谱（ESI-MS）、核磁共振氢谱（H NMR）滴定和密度泛函理论（DFT）计算研究了该传感器对铝离子和磷酸氢根离子的传感机制。
