Multiple metal ions are traditionally detected using inductively coupled plasma massspectrometry (ICP-MS) and atomic fluorescence spectrometry. Although thesemethodsare sensitive and accurate, they depend on complex i...Multiple metal ions are traditionally detected using inductively coupled plasma massspectrometry (ICP-MS) and atomic fluorescence spectrometry. Although thesemethodsare sensitive and accurate, they depend on complex instruments and requirehighly trained operators, making low costly rapid detection challenging. It is urgentto develop a convenient, rapid and sensitive method to detect multiple metal ions.Herein, we designed a bispyrene derivative (BP) with aggregation-induced enhancedemission (AIEE) property to construct a high fluorescent sensor array to realize theeffective identification of four metal ions (Fe^(3+), Cu^(2+), Co^(2+) and Cd^(2+)). The differentialcoordination capability between metal ions and BP with the aid of acetateions resulted the possibility of array-based sensing. The four heavy metal ions couldbe immediately classified in the concentration of 100 nM. The limit of detection(LOD) of Fe^(3+), Cu^(2+), Co^(2+), and Cd^(2+) were as low as 16.2, 21.8, 51.4, and 25.9 nM,respectively. Furthermore, the sensor array was applied for identification multipleheavy metal ions in environmental samples and iron ion in rat serums with identifiedof 100%. The sample consumption as low as 2 μL for each detection andthe results could be extracted by smartphones under ultraviolet lamps. It provideda rapid, sensitive, low-cost, and on-site multiple metal ions detection method.展开更多
基金NSFC,Grant/Award Numbers:82073602,82473685,52325311Natural Science Foundation of Jilin Province,Grant/Award Number:20200201081JC。
文摘Multiple metal ions are traditionally detected using inductively coupled plasma massspectrometry (ICP-MS) and atomic fluorescence spectrometry. Although thesemethodsare sensitive and accurate, they depend on complex instruments and requirehighly trained operators, making low costly rapid detection challenging. It is urgentto develop a convenient, rapid and sensitive method to detect multiple metal ions.Herein, we designed a bispyrene derivative (BP) with aggregation-induced enhancedemission (AIEE) property to construct a high fluorescent sensor array to realize theeffective identification of four metal ions (Fe^(3+), Cu^(2+), Co^(2+) and Cd^(2+)). The differentialcoordination capability between metal ions and BP with the aid of acetateions resulted the possibility of array-based sensing. The four heavy metal ions couldbe immediately classified in the concentration of 100 nM. The limit of detection(LOD) of Fe^(3+), Cu^(2+), Co^(2+), and Cd^(2+) were as low as 16.2, 21.8, 51.4, and 25.9 nM,respectively. Furthermore, the sensor array was applied for identification multipleheavy metal ions in environmental samples and iron ion in rat serums with identifiedof 100%. The sample consumption as low as 2 μL for each detection andthe results could be extracted by smartphones under ultraviolet lamps. It provideda rapid, sensitive, low-cost, and on-site multiple metal ions detection method.
