Citation: Xiang Qin LIN, Qian MIAO, Bao Kang JIN. DNA Immobilization on Nano-Gold Modified Glassy Carbon Electrode[J]. Chinese Chemical Letters, ;1999, 10(2): 157-160. shu

DNA Immobilization on Nano-Gold Modified Glassy Carbon Electrode

a Department of Chemistry, University of Science and Technology of China, Hefei 230026;
b Department of Chemistry, AnHui University, Hefei 230039

Received Date: 10 September 1998

Fund Project: The financial support from the CAS Key Project is greatly acknowledged.

CT-DNA were electrochemically immobilized on the surfaces of both nano-gold modified glassy carbon electrode and bare glassy carbon electrode. The cyclic voltammetrie behavior of Co (phen)₃³⁺ adsorbed on the immobilized DNA was studied. Increase in the peak current of Co (phen)₃³⁺ redox reaction was obtained on nano-gold modified glassy carbon electrode. The result suggests that more DNA molecules were immobilized on this electrode and nano-gold modification can enhance the heterogeneous electron transfer rate constant of the Co (phen)₃³⁺.
- DNA,
- nano-gold,
- glassy carbon,
- cyclic voltammetry
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