4.7 Article

Ultrasensitive DNA detection based on Au nanoparticles and isothermal circular double-assisted electrochemiluminescence signal amplification

Journal

CHEMICAL COMMUNICATIONS
Volume 47, Issue 29, Pages 8358-8360

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c1cc12413g

Keywords

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Funding

  1. NSFC [21025522, 20975051, 20890021]
  2. NSFC for Creative Research Groups [20821063]
  3. 973 Program of China [2007CB936404]

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We report here an ultrasensitive DNA detection approach which combines Au NPs enhanced electrochemiluminescence (ECL) of the CdS nanocrystal (NC) film with isothermal circular amplification reaction of polymerase and nicking endonuclease (NEase). By the double-signal amplification, this approach could sensitively respond down to 5 aM DNA.

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