Design and Synthesis of a Fluorescent Probe with a Large Stokes Shift for Detecting Thiophenols and Its Application in Water Samples and Living Cells
作者:Hua Liu、Chuanlong Guo、Shuju Guo、Lijun Wang、Dayong Shi
DOI:10.3390/molecules24020375
日期:——
florescent probe (probe-KCP) was developed for highly selective detection of thiophenols based on a donor-excited photo-induced electron transfer mechanism. Herein, the synthesis of the probe, a chalcone derivative, through a simple straightforward combination of a carbazole-chalcone fluorophore with a 2,4-dinitrophenyl functional group. In a kinetic study of the probe-KCP for thiophenols, the probe displayed
基于供体激发的光诱导电子转移机制,开发了一种高荧光探针(探针KCP)用于高选择性检测硫酚。在此,通过咔唑-查耳酮荧光团与2,4-二硝基苯基官能团的简单直接组合来合成探针,查耳酮衍生物。在针对硫酚的探针-KCP的动力学研究中,该探针显示出较短的响应时间(〜30分钟)和明显的荧光增强。在选择和竞争实验中,KCP探针对硫酚的选择性优于谷胱甘肽(GSH),半胱氨酸(Cys),硫化氢钠(NaSH)和乙硫醇(C 2H₅SH),除了常见的阴离子和金属离子。使用设计的探针,我们成功地监测和定量了剧毒的苯酚。这种开启式荧光探针的斯托克斯频移(130 nm)非常大,响应时间很短(30分钟),并且在检测苯酚中具有很高的选择性和灵敏度(〜160倍),并且在苯酚中具有明显的荧光。苯酚的存在。探针-KCP对苯硫酚的响应线性范围(0⁻15μM),检测限为28 nM(R²= 0.9946),超过了上述提到的其他受测物质,