Premium
Gating of Redox Currents at Gold Nanoelectrodes via DNA Hybridization
Author(s) -
Liu Gang,
Sun Chunfeng,
Li Di,
Song Shiping,
Mao Bingwei,
Fan Chunhai,
Tian Zhongqun
Publication year - 2010
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200903590
Subject(s) - ferricyanide , materials science , nanotechnology , redox , electrochemistry , gating , ion , electrode , inorganic chemistry , biophysics , chemistry , metallurgy , biology , organic chemistry
DNA immobilized at the surface of cone‐shaped gold nanoelectrodes provides a favorable platform for artificial ion channels that can gate the redox reaction of ferricyanide. This effect arises from the nanometer‐scale curvature and the enhanced mass transfer at nanoelectrodes. The label‐free feature based on this ion‐channel effect provides a means to develop label‐free electrochemical DNA sensors.