Ontology highlight
ABSTRACT:
SUBMITTER: He Y
PROVIDER: S-EPMC3220944 | biostudies-literature | 2011 Jul
REPOSITORIES: biostudies-literature
He Yuqing Y Zhang Xibao X Zeng Kang K Zhang Sanquan S Baloda Meenu M Gurung Anant S AS Liu Guodong G
Biosensors & bioelectronics 20110511 11
We report a sensitive method for visual detection of mercury ions (II) (Hg²⁺) in aqueous solution by using gold nanoparticles (Au-NPs) and thymine (T)-rich hairpin DNA probes. The thiolated hairpin DNA probe was immobilized on the Au-NP surface through a self-assembling method. Another thymine-rich, digoxin-labeled DNA probe was introduced to form DNA duplexes on the Au-NP surface with thymine-Hg²⁺-thymine (T-Hg²⁺-T) coordination in the presence of Hg²⁺. The Au-NPs associated with the formed dup ...[more]