DNA biosensor based on the CdS modified glassy carbon electrode - Details

Author：

Xu, Laihui (Xu, Laihui.) | Lu, Liping (Lu, Liping.) (Scholars：鲁理平) | Gao, Zhao (Gao, Zhao.) | Kang, Tianfang (Kang, Tianfang.) (Scholars：康天放) | Cheng, Shuiyuan (Cheng, Shuiyuan.) (Scholars：程水源)

Indexed by：

EI Scopus

Abstract：

An　electrochemical　sensor　for　DNA　hybridization　detection　using　methylene　blue　(MB)　as　indicator　was　developed.　CdS　nanoparticals　were　electrodeposited　on　the　glassy　carbon　electrode　(GCE).　DNA　probe　and　the　CdS　was　linked　by　cysteine.　The　electrochemical　response　of　the　DNA　hybridization　was　measured　by　differential　pulse　voltammetry　(DPV).　The　difference　of　the　cathodic　peak　currents　of　MB　after　the　hybridization　of　the　DNA　probe　was　obvious.　In　addition,　the　morphology　of　the　modified　electrode　was　characterized　by　AFM.　©　2011　IEEE.

Keyword：

Amino acids Aromatic compounds II-VI semiconductors Cadmium sulfide Biomedical engineering Electrochemical sensors Carbon Glass membrane electrodes DNA Electrodeposition Glass Probes Voltammetry

Author Community：

[ 1 ] [Xu, Laihui]College of Enviromental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Lu, Liping]College of Enviromental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Gao, Zhao]College of Enviromental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Kang, Tianfang]College of Enviromental and Energy Engineering, Beijing University of Technology, Beijing 100124, China
[ 5 ] [Cheng, Shuiyuan]College of Enviromental and Energy Engineering, Beijing University of Technology, Beijing 100124, China