Journal of Fluorescence ( IF 2.6 ) Pub Date : 2021-09-14 , DOI: 10.1007/s10895-021-02818-w Ersin Orhan 1 , Ece Ergun 2 , Koray Şarkaya 3 , Ümit Ergun 1
A simple and novel Schiff base chemosensor (BMHM) based on benzimidazole was synthesized. In ethanol–water (1:1, v/v) medium on varying concentrations of Zn2+ chemosensor exhibited a strong and quick turn on fluorescence response. The Zn2+ recognition was based on the Chelation–enhanced fluorescence effect. The binding constant and limit of detection for BMHM-Zn2+ complexation were estimated to be 7.99 × 104 M−1 and 0.148 µM, respectively. The extreme fluorescent enhancement caused by Zn2+ binding in chemosensor BMHM occurred at a pH range of 6–7. The practical use of chemosensor BMHM was tested by determination of Zn2+ in real water samples and comparing the results with the data obtained using high resolution inductively coupled plasma mass spectrometry.
中文翻译:
一种用于锌离子荧光测定的新型苯并咪唑基化学传感器
合成了一种基于苯并咪唑的简单而新颖的席夫碱化学传感器(BMHM)。在乙醇-水 (1:1, v/v) 介质中,不同浓度的 Zn 2+化学传感器表现出强烈而快速的荧光响应。Zn 2+识别基于螯合增强的荧光效应。BMHM-Zn 2+络合的结合常数和检测限估计分别为7.99 × 104 M -1和0.148 µM。由化学传感器 BMHM 中的 Zn 2+结合引起的极端荧光增强发生在 6-7 的 pH 范围内。通过测定Zn 2+测试化学传感器BMHM的实际应用 在实际水样中,并将结果与使用高分辨率电感耦合等离子体质谱法获得的数据进行比较。