Responsive ruthenium complex probe for phosphorescence and time-gated luminescence detection of bisulfite
作者:Wenzhu Zhang、Xiuyan Xi、Yong-Lei Wang、Zhongbo Du、Chaolong Liu、Jianping Liu、Bo Song、Jingli Yuan、Run Zhang
DOI:10.1039/c9dt04614c
日期:——
Sensitive and selective quantification of specific analytes is of great significance in analytical and environmental sciences, as well as in the food industry. Herein, we report the design, synthesis, characterization, and application of a responsive ruthenium(ii) complex probe, Ru-azo, for phosphorescence and time-gated luminescence (TGL) detection of bisulfite, an important additive in the food industry
特定分析物的敏感和选择性定量在分析和环境科学以及食品工业中具有重要意义。在此,我们报告了响应性钌(ii)络合物探针Ru-azo的设计,合成,表征和应用,用于食品工业中重要添加剂亚硫酸氢盐的磷光和时控发光(TGL)检测。在亚硫酸氢盐与Ru-azo的偶氮基团之间进行特定的亲核加成反应后,获得了新的钌(ii)络合物Ru-SO3,导致磷光强度显着增加,从而实现了亚硫酸氢盐的检测。此外,Ru-偶氮(τ= 258 ns)和Ru-SO3(τ= 261 ns)的长寿命排放也使TGL能够检测富含自发荧光的食品样品中的亚硫酸氢盐。通过理论计算,验证了钌(ii)配合物内的光致电子转移(PET)过程,从而揭示了Ru-偶氮对亚硫酸氢盐的发光“关闭”响应的合理性。该探针显示出良好的水溶性,对亚硫酸氢盐响应的高灵敏度,选择性和准确性,有利于其在水性和食品样品中的亚硫酸氢盐的磷光和TGL检测中的应用。