Journal article
Simple and Rapid Colorimetric Biosensors Based on DNA Aptamer and Noncrosslinking Gold Nanoparticle Aggregation
Abstract
The color purple. Upon binding of the target +, negatively charged DNA aptamers (shown in purple) dissociate from a gold nanoparticle surface; this results in nanoparticle aggregation and a color change at a chosen salt concentration.
Authors
Zhao W; Chiuman W; Brook MA; Li Y
Journal
ChemBioChem, Vol. 8, No. 7, pp. 727–731
Publisher
Wiley
Publication Date
May 7, 2007
DOI
10.1002/cbic.200700014
ISSN
1439-4227