G-quadruplex facilitated turn-off fluorescent chemosensor for selective detection of cupric ion.
A simple turn-off fluorescent method was utilized to quantitatively detect Cu(II) which can selectively quench fluorescent dye molecules. Addition of DNA G-quadruplex into the solution significantly magnifies the discrimination, lowers the limit of detection and broadens the linear response range.
Qin
Haixia
H
State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin, 130022, China.
Ren
Jiangtao
J
Wang
Jiahai
J
Wang
Erkang
E
D003300:Copper / Q000032:analysis*; D005456:Fluorescent Dyes / Q000737:chemistry*; D054856:G-Quadruplexes; D013050:Spectrometry, Fluorescence
D005456:Fluorescent Dyes; D003300:Copper