A novel boronic acid-based fluorescent sensor for selectively recognizing Fe<sup>3+</sup> ion in real time
作者:Guiqian Fang、Hao Wang、Zhancun Bian、Min Guo、Zhongyu Wu、Qingqiang Yao
DOI:10.1039/c9ra03978c
日期:——
Boronic acid provides faster fluorescence response to Fe3+ compared to other reported sensors, which is critical for continuous dynamic detection. Herein, we reported a novel boronic acid-based sensor 4 that could recognize Fe3+ ion in real time. After 10 equiv. of Fe3+ ion (1 mM) was added, the fluorescence of sensor 4 was immediately quenched by 96%. While other ions, including Ba2+, Ca2+, Cr2+, Cd2+
与其他报道的传感器相比,硼酸对 Fe 3+的荧光响应更快,这对于连续动态检测至关重要。在此,我们报道了一种新型的基于硼酸的传感器4 ,它可以实时识别 Fe 3+离子。10当量后。加入Fe 3+离子(1 mM)后,传感器4的荧光立即猝灭96%。而其他离子,包括Ba 2+、Ca 2+、Cr 2+、Cd 2+、Co 2+、Cs 2+、Cu 2+、Fe 2+、K +、Li +、Mg 2+、Mn 2+、Na +、Ni 2+或Zn 2+分别没有显着改变荧光。进一步的测试表明,高选择性感应 Fe 3+离子受益于结构中的两个硼酸官能团。此外,干扰实验表明该传感器具有优异的抗干扰能力。此外,我们在兔血浆和其他实际应用的实际样品中进行了结合活性测试,获得了相似的结果。并且薄层负载传感器4也成功应用于识别各种离子中的Fe 3+离子。因此,4可作为电位传感器连续监测和实时检测Fe 3+离子。