Journal
ADVANCED MATERIALS
Volume 22, Issue 19, Pages 2148-+Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.200903590
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Funding
- National Natural Science Foundation [20725516, 20873175, 20805055, 90913014]
- National Basic Research Program of China [2006CB933000, 2007CB936000, 2007CB935603]
- Ministry of Health [2009ZX10004-301, 2009ZX10004-302]
- Shanghai Municipal Commission for Science and Technology [0952nm04600]
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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.
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