Carbon nanotube-DNA hybrid fluorescent sensor for sensitive and selective detection of mercury(II) ion.
Mercury ion (Hg(2+)) is able to specifically bind to the thymine-thymine (T-T) base pair in a DNA duplex and single-walled carbon nanotubes (SWNTs) can effectively quench fluorescence of the dye tethered to the DNA, which enables fluorescent detection of Hg(2+) in aqueous solution with high selectivity and sensitivity.
Zhang
Libing
L
State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, Jilin, P. R. China.
Li
Tao
T
Li
Bingling
B
Li
Jing
J
Wang
Erkang
E
D020029:Base Pairing; D004247:DNA / Q000737:chemistry*; D004277:DNA, Single-Stranded / Q000737:chemistry; D008628:Mercury / Q000032:analysis / Q000737:chemistry*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013941:Thymine / Q000737:chemistry
D004277:DNA, Single-Stranded; D037742:Nanotubes, Carbon; D004247:DNA; D008628:Mercury; D013941:Thymine