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Programmed Colorimetric Logic Devices Based on DNA-Gold Nanoparticle Interactions

✍ Scribed by Jiang, Qiao; Wang, Zhen-Gang; Ding, Baoquan


Book ID
118264194
Publisher
John Wiley and Sons
Year
2013
Tongue
English
Weight
944 KB
Volume
9
Category
Article
ISSN
1613-6810

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The pH-dependent self-assembling of gold nanoparticles is described. Oligonucleotides containing four or six consecutive dC residues are immobilized on 15-nm gold nanoparticles. Their assembly is based on the formation of a DNA i-motif as determined by the color change from red to blue between pH 5.