Rapid-response ratiometric sensors are promising tools to detect trace water and temperature.However,achieving an accurately visualized water assay in a very narrow range is still a challenge.Herein,a novel dual-funct...Rapid-response ratiometric sensors are promising tools to detect trace water and temperature.However,achieving an accurately visualized water assay in a very narrow range is still a challenge.Herein,a novel dual-functional ratiometric luminescent sensor,i.e.,Eu_(2.2)Tb_(97.8)-TCA,was successfully fabricated based on lanthanide metal-organic frameworks.This sensor showed a very fast(less than 20 s)and relatively ultrasensitive(limit of detection 0.016%v/v)response to trace water in ethanol,achieving the sensitive visual determination of water in ethanol with multiple readouts.Intriguingly,visual and quantitative determination of water with a detection limit of 0.035%v/v was achieved based on the ratio of green(G)to red(R)values combined with a smartphone color picker application(APP).展开更多
基金support of National Natural Science Foundation of China(Projects 21871121)Science and Technological Plan of Gansu Province(20YF3GA012)the 111 project(B20027).
文摘Rapid-response ratiometric sensors are promising tools to detect trace water and temperature.However,achieving an accurately visualized water assay in a very narrow range is still a challenge.Herein,a novel dual-functional ratiometric luminescent sensor,i.e.,Eu_(2.2)Tb_(97.8)-TCA,was successfully fabricated based on lanthanide metal-organic frameworks.This sensor showed a very fast(less than 20 s)and relatively ultrasensitive(limit of detection 0.016%v/v)response to trace water in ethanol,achieving the sensitive visual determination of water in ethanol with multiple readouts.Intriguingly,visual and quantitative determination of water with a detection limit of 0.035%v/v was achieved based on the ratio of green(G)to red(R)values combined with a smartphone color picker application(APP).
