A new selective and sensitive optical sensor based on the incorporation of new synthesized N’-(2-hydroxy-5- iodobenzylidene) isonicotinohydrazide (HIBIN) as an effective reagent into the nanoporous of a transparent glass like material through the sol–gel process was developed which was suitable for the determination of copper (II) ions in aqueous solutions. The thin film sensors were constructed by spin-coating of prepared sol onto glass plate and their surface morphology were studied by field emission scanning electron microscopy (FE-SEM) and atomic force microscope (AFM) technique. Influence of sonication time on immobilization of HIBIN into silica matrix was investigated through calculation of leaching percentage. The Results shown that sonication time of 35 min is suitable to give more stable thin films without fluctuation in sensitivity and response time of presented sensor for a long period of time. The proposed optical sensor can be used for determination of copper (II) ions in the range of 9.1×10⁻⁸ to 1.12×10⁻⁵ mol L⁻¹with a detection limit of 1.8 × 10^-8 mol L^-1. It also showed relative standard deviation 3.4 and 0.72% for reproducibility and repeatability respectively, along with a fast response time about of 2 min. The constructed optode is stable in wet conditions and could be stored for at least 6 weeks without observing any change in its sensitivity. The developed sensor was successfully applied to the determination of copper (II) in fruit juice and water samples which results were confirmed by atomic absorption spectrometry method.

通过将新合成的N'-（2-羟基-5-碘代亚苄基）异烟酰肼（HIBIN）作为有效试剂通过溶胶-凝胶工艺掺入透明玻璃状材料的纳米孔中，从而形成了一种新型的选择性和灵敏的光学传感器。开发了适用于测定水溶液中铜（II）离子的方法。通过将制备的溶胶旋涂到玻璃板上来构建薄膜传感器，并通过场发射扫描电子显微镜（FE-SEM）和原子力显微镜（AFM）技术研究其表面形态。通过计算浸出率，研究了超声处理时间对HIBIN固定在二氧化硅基质中的影响。结果表明，超声处理时间为35分钟很适合获得更稳定的薄膜，而所提供传感器的灵敏度和响应时间不会在长时间内波动。所提出的光学传感器可用于测定9.1×10范围内的铜（II）离子^-8至1.12×10 ^-5 mol L ^-1，检测极限为1.8×10 ^-8 mol L ^-1。它还显示出相对于重现性和可重复性的相对标准偏差分别为3.4和0.72％，以及大约2分钟的快速响应时间。所构建的光电二极管在潮湿条件下稳定，可以保存至少6周，而不会观察到其灵敏度的任何变化。研制成功的传感器已成功应用于果汁和水样中铜（II）的测定，结果已通过原子吸收光谱法得到了证实。