摘要
设计合成了2种以香豆素为荧光团、酰腙为识别基团的双香豆素双酰腙类荧光探针,并对其进行了结构表征及光谱性能研究。结果表明,探针对Cu^2+具有高选择性和高灵敏度,表现出明显的荧光猝灭效应,探针与Cu^2+以1∶2的结合比相互作用,对Cu^2+检测限为10^-9mol/L。
Two fluorescent probes,(N1′,E,N3′,E)-N1′,N3′-bis((7-N,N-diethylaminocoumarin-3-yl)methylene)malonohydrazide and(N1′E,N4′E)-N1′,N4′-bis((7-N,N-diethylaminocoumarin-3-yl)methylene)succinohydrazide,bearing acylhydrazone group as binding site and coumarin group as the fluorescence signal group were synthesized and characterized by conventional techniques.These probes showed notable fluorescence turn-off response for Cu^2+over other metals ions.The probes and Cu^2+formed 1∶2 coordination complexes according to spectroscopy data and Job’s plots.Further study demonstrated that the detection limit of Cu^2+for the probes was as low as 10^-9mol/L.
作者
王海娜
张慧
俞天智
赵玉玲
Wang Haina;Zhang Hui;Yu Tianzhi;Zhao Yuling(Key Laboratory of Opto-Electronic Technology and Intelligent Control(Ministry of Education),Lanzhou Jiaotong University,Lanzhou,730070;School of Chemical and Biological Engineering,Lanzhou Jiaotong University,Lanzhou,730070)
出处
《化学通报》
CAS
CSCD
北大核心
2020年第3期240-245,252,193,共8页
Chemistry
基金
国家自然科学基金项目(51563014)
甘肃省自然基金项目(1606RJZA018)资助。
