Efficient quenching of electrochemiluminescence from K-doped graphene–CdS:Eu NCs by G-quadruplex–hemin and target recycling-assisted amplification for ultrasensitive DNA biosensing

Hong Zhou; Yan-Yan Zhang; Jing Liu; Jing-Juan Xu; Hong-Yuan Chen

doi:10.1039/C3CC38990A

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Chemical Communications

Issue 22, 2013

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Efficient quenching of electrochemiluminescence from K-doped graphene–CdS:Eu NCs by G-quadruplex–hemin and target recycling-assisted amplification for ultrasensitive DNA biosensing

Hong Zhou,^a Yan-Yan Zhang,^a Jing Liu,^a Jing-Juan Xu*^a and Hong-Yuan Chen^a

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State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
E-mail: xujj@nju.edu.cn ;
Fax: +86-25-83597294 ;
Tel: +86-25-83597294

Chem. Commun., 2013,49, 2246-2248

DOI: 10.1039/C3CC38990A
Received 17 Dec 2012, Accepted 01 Feb 2013
First published online 01 Feb 2013

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Abstract
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Based on the K-doped graphene–CdS:Eu NC composites and the nicking endonuclease (NEase) assisted strand-scission cycle, we have developed an ultrasensitive and selective electrochemiluminescence (ECL) DNA biosensor using the G-quadruplex–hemin-based DNAzyme which acts as an electrocatalyst for the reduction of H₂O₂, the coreactant of CdS:Eu NCs ECL.

Abstract from Analytical Abstracts 2013

Based on the K-doped graphene-CdS:Eu NC composites and the nicking endonuclease (NEase) assisted strand-scission cycle, we have developed an ultrasensitive and selective electrochemiluminescence (ECL) DNA biosensor using the G-quadruplex-hemin-based DNAzyme which acts as an electrocatalyst for the reduction of H₂O₂, the coreactant of CdS:Eu NCs ECL.

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Hong Zhou
Yan-Yan Zhang
Jing Liu
Jing-Juan Xu
Hong-Yuan Chen

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Efficient quenching of electrochemiluminescence from K-doped graphene–CdS:Eu NCs by G-quadruplex–hemin and target recycling-assisted amplification for ultrasensitive DNA biosensing

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Efficient quenching of electrochemiluminescence from K-doped graphene–CdS:Eu NCs by G-quadruplex–hemin and target recycling-assisted amplification for ultrasensitive DNA biosensing

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