Photoelectrochemistry with Controlled DNA-Cross-Linked CdS Nanoparticle Arrays

Abstract

Photochemical detection of a nucleic acid was achieved by means of a DNA-cross-linked CdS nanoparticle array attached to an electrode (see schematic diagram). The array was constructed from the target DNA (blue) and CdS nanoparticles bearing oligonucleotides complementary to its 3′- (green) and 5′-ends (red). The photocurrent generated on irradiation of the array increases with increasing concentration of the target. Supporting information for this article is available on the WWW under http://www.angewandte.com or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.