亚氨基二苯甲酮-噻吩酰肼席夫碱：一种用于顺磁性铁离子的选择性开启型传感器及其在实际样品分析中的应用。
Iminobenzophenone-thiophen hydrazide schiff base: a selective turn on sensor for paramagnetic Fe ion and application in real sample analysis.
作者信息
Christopher Leslee Denzil Britto, Madheswaran Bharathi, Gunasekaran Jayapratha, Karuppannan Sekar, Kuppannan Shanmuga Bharathi
机构信息
Department of Chemistry, School of Physical Sciences, Periyar University, Periyar Palkalai Nagar, Salem, Tamil Nadu, 636011, India.
Department of Science and Humanities (Chemistry), Anna University, University College of Engineering, Dindigul, Tamil Nadu, 624622, India.
出版信息
Photochem Photobiol Sci. 2023 Aug;22(8):1933-1943. doi: 10.1007/s43630-023-00422-4. Epub 2023 Apr 21.
A highly selective turn-on sensor for paramagnetic Fe ions based on (E)-N'-((2-aminophenyl)(phenyl)methylene)thiophene-2-carbohydrazide is successfully synthesized. The sensor BPTH is significantly selective and sensitive towards Fe ions over other interfering metal ions especially Cu and Co ions with a lowest limit of recognition 1.48 × 10 M. The turn-on sensing mechanism involves enhanced charge transfer. Fe ion forms strong binding with the ligand with a K value about 8.23 × 10 M and a 1:1 stoichiometric ratio is confirmed by Job's plot experiment. With Fe ion, the yellow ligand BPTH change to a green fluorescent and reversible with 1 equivalent of EDTA. Practical application of sensor is demonstrated in real sample analysis.
基于（E）-N'-（（2-氨基苯基）（苯基）亚甲基）噻吩-2-碳酰肼成功合成了一种用于顺磁性铁离子的高选择性开启型传感器。传感器BPTH对铁离子具有显著的选择性和敏感性，相对于其他干扰金属离子，特别是铜离子和钴离子，其最低识别限为1.48×10⁻⁶ M。开启传感机制涉及增强的电荷转移。铁离子与配体形成强结合，K值约为8.23×10⁻⁶ M，Job曲线实验证实化学计量比为1:1。加入铁离子后，黄色配体BPTH变为绿色荧光，并且与1当量的乙二胺四乙酸（EDTA）反应可逆。该传感器在实际样品分析中得到了应用展示。
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