Wang Yifan, Wu Mian, Yu Shaoming, Jiang Changlong
School of Chemistry and Chemical Engineering, Hefei University of Technology Hefei Anhui 230009 China
Institute of Intelligent Machines, Chinese Academy of Sciences Hefei Anhui 230031 China
RSC Adv. 2018 Apr 3;8(23):12708-12713. doi: 10.1039/c8ra00917a.
A novel, simple and effective dual-emissive fluorescent probe for the sensitive and selective detection of Cu(ii) has been developed by mixing blue carbon dots and orange carbon dots, with a sensitive detection limit of 7.31 nM. The blue fluorescence can be selectively quenched by Cu(ii), while the orange fluorescence is a internal reference, resulting in a distinguishable fluorescence color change from blue to orange under a UV lamp. Meanwhile, its as-prepared text paper provides a convenient and simple approach for the visual detection of Cu(ii) and successfully applied in real water samples, with a dose-discerning ability as low as 50 nM. The methodology reported here opens a novel pathway toward the real applications of fluorescent test papers.
通过混合蓝色碳点和橙色碳点，开发出了一种新型、简单且有效的双发射荧光探针，用于灵敏且选择性地检测铜离子（Cu(ii)），其灵敏检测限为7.31 nM。蓝色荧光可被Cu(ii)选择性猝灭，而橙色荧光作为内参，在紫外灯下会导致荧光颜色从蓝色明显变为橙色。同时，其制备的试纸为可视化检测Cu(ii)提供了一种便捷简单的方法，并成功应用于实际水样中，剂量识别能力低至50 nM。本文报道的方法为荧光试纸的实际应用开辟了一条新途径。
