Dathees T Johny, Makarios Paul S Prince, Sanmugam Anandhavelu, Abiram A, Murugan S, Kumar Raju Suresh, Almansour Abdulrahman I, Arumugam Natrajan, Nandhakumar R, Vikraman Dhanasekaran
Fluorensic Materials Laboratory, Department of Physical Sciences, Karunya Institute of Technology and Sciences (Deemed-to-be University), Karunya Nagar, Coimbatore 641 114, India.
Department of Physical Sciences, Karunya Institute of Technology and Sciences (Deemed-to-be University), Karunya Nagar, Coimbatore 641 114, India.
Spectrochim Acta A Mol Biomol Spectrosc. 2024 Mar 5;308:123732. doi: 10.1016/j.saa.2023.123732. Epub 2023 Dec 3.
Schiff base (HNPD) was achieved by reacting 2-hydroxy-1-naphthaldehyde with N-phenyl-o-phenylenediamine in enthanol medium. The spectroscopic analyses were done to establish the formation of Schiff base apparently. Further, synthesized Schiff base conjugate was successfully used as a fluorogenic chemosensor to detect aluminium ions (Al) with high fluorescence amplification among the other interfering various metal ions. The limit of detection of 0.0248 × 10 M and a binding constant of 6.19 × 10 M were obtained by the receptor HNPD for Al detection. A high influence of intramolecular charge transfer kinetics was established to realize the selective responsiveness towards Al ions. Density functional theory approximation formulated the band energy modulation and localization and delocalization of electron density for the HNPD and Al complexation. The developed sensor ultimately inspected on the real soil and water samples and ascertained the practical ability of Al ions detection of HNPD chemosensor.
席夫碱（HNPD）是通过在乙醇介质中使2-羟基-1-萘甲醛与N-苯基邻苯二胺反应制得的。进行光谱分析以明显确定席夫碱的形成。此外，合成的席夫碱共轭物成功用作荧光化学传感器，在其他各种干扰金属离子中对铝离子（Al）具有高荧光放大作用。受体HNPD检测Al时的检测限为0.0248×10⁻⁶ M，结合常数为6.19×10⁵ M。确定了分子内电荷转移动力学的高度影响，以实现对Al离子的选择性响应。密度泛函理论近似法阐述了HNPD与Al络合时的能带能量调制以及电子密度的定位和离域。所开发的传感器最终在实际土壤和水样上进行了检测，并确定了HNPD化学传感器检测Al离子的实际能力。
