A new bidentate Schiff base ligand [HL = N-(2-hydroxy-1-naphthylidene)-2-methyl aniline] and its mononuclear Cu(II) complex with formula [CuL₂] were prepared and characterized by Fourier-transform infrared (FT-IR), Nuclear Magnetic Resonance [¹H and ¹³C{¹H} NMR], Ultraviolet–visible (UV–Vis) spectroscopic methods, and elemental analysis. The Schiff base ligand [HL] and Cu(II) complex [CuL₂] crystal structures were determined using the single crystal X-ray diffraction method. The data of crystal structure indicated a bidentate method of coordination for the Schiff base by NO donor sets in a regular square-planar fashion. The nano-sized [CuL₂] was synthesized by the sonochemical method and was detected by X-ray powder diffraction (XRD), Field Emission Scanning Electron Microscopes (FE-SEM), and FT-IR spectroscopy. The average particle size in nano-sized [CuL₂] was approximately 55 nm. The nano-complex [CuL₂] was used in a modified screen-printed electrode (modified SPE) as an electrochemical sensor for the detection of 2-phenylphenol. The oxidation reaction of 2-phenylphenol at the modified electrode indicated a linear range of 0.01–600.0 µM and the recognition limit was 8.0 nM. The proposed electrode shows two well-separated oxidation signals for 2-phenylphenol and 4-chlorophenol, which makes it suitable for the simultaneous determination of these analytes. The fabricated sensor was successfully applied for the designation of 2-phenylphenol in lemon rind, orange rind, and water samples with satisfactory recovery.

制备了一种新的双齿席夫碱配体[HL = N-(2-羟基-1-亚萘基)-2-甲基苯胺]及其分子式为[CuL ₂ ]的单核Cu(II)配合物，并通过傅里叶变换红外光谱进行表征。 FT-IR)、核磁共振 [ ¹ H 和¹³ C{ ¹ H} NMR]、紫外-可见 (UV-Vis) 光谱方法和元素分析。席夫碱配体 [HL] 和 Cu(II) 配合物 [CuL ₂ ] 晶体结构使用单晶 X 射线衍射法测定。晶体结构数据表明 NO 供体组以规则的方形平面方式对 Schiff 碱进行配位的双齿方法。纳米尺寸的 [CuL ₂] 通过声化学方法合成，并通过 X 射线粉末衍射 (XRD)、场发射扫描电子显微镜 (FE-SEM) 和 FT-IR 光谱检测。纳米级[CuL ₂ ]的平均粒径约为55 nm。纳米复合物 [CuL ₂] 被用于改进的丝网印刷电极（改进的 SPE）中，作为检测 2-苯基苯酚的电化学传感器。修饰电极上 2-苯基苯酚的氧化反应表明线性范围为 0.01–600.0 µM，识别限为 8.0 nM。所提出的电极显示了 2-苯基苯酚和 4-氯苯酚的两个分离良好的氧化信号，这使其适用于同时测定这些分析物。所制备的传感器成功应用于柠檬皮、橙皮和水样中2-苯基苯酚的鉴定，回收率令人满意。