We report herein a new fluorescent probe for the selective recognition and determination of dodine among 20 different pesticides.This fluorescent probe was assembled through host-guest complexation between cucurbit[10...We report herein a new fluorescent probe for the selective recognition and determination of dodine among 20 different pesticides.This fluorescent probe was assembled through host-guest complexation between cucurbit[10]uril(Q[10]) and aminopropyl-1-pyrenebutanamide(PBA) and is designated as PBA@Q[10].Addition of dodine to PBA@Q[10] results in a dramatic enhancement of fluorescence intensity at 390 nm,accompanied by fluorescence quenching at 488 nm.On this basis,the detection limit is 6.78 × 10^(-7) mol/L.The response mechanism is a competitive interaction:dodine occupies the cavity of Q[10] and forces PBA to leave.展开更多
基金the National Natural Science Foundation of China(No.21861011)the Major Program for Creative Research Groups ofGuizhou Provincial Education Department(No.2017-028)+1 种基金the Innovation Program for High-level Talents of Guizhou Province(No.2016-5657)the Science and Technology Fund of Guizhou Province(Nos.2016-1030,2018-5781)are gratefully acknowledged for financial support。
文摘We report herein a new fluorescent probe for the selective recognition and determination of dodine among 20 different pesticides.This fluorescent probe was assembled through host-guest complexation between cucurbit[10]uril(Q[10]) and aminopropyl-1-pyrenebutanamide(PBA) and is designated as PBA@Q[10].Addition of dodine to PBA@Q[10] results in a dramatic enhancement of fluorescence intensity at 390 nm,accompanied by fluorescence quenching at 488 nm.On this basis,the detection limit is 6.78 × 10^(-7) mol/L.The response mechanism is a competitive interaction:dodine occupies the cavity of Q[10] and forces PBA to leave.
