Electrochemical behavior of gold electrodes modified with photosensitizer-tethered DNA | Zendy

Akimitsu Okamoto | Zendy

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Electrochemical behavior of gold electrodes modified with photosensitizer-tethered DNA

Author(s) -

Akimitsu Okamoto

Publication year - 2004

Publication title -

nucleic acids symposium series

Language(s) - English

Resource type - Journals

eISSN - 1746-8272

pISSN - 0261-3166

DOI - 10.1093/nass/48.1.70

Subject(s) - photocurrent , electrode , photosensitizer , electrochemistry , amperometry , anthraquinone , chemistry , dna , materials science , colloidal gold , photochemistry , nanotechnology , optoelectronics , nanoparticle , organic chemistry , biochemistry

We investigated electrochemical characteristics of gold electrodes modified with photosensitizer-tethered DNA. We synthesized 3'-thiol-modified DNA strands (ODN-SH) and 3'-anthraquinone-modified DNA strands (AQ-ODN). We prepared an AQ-ODN/ODN-SH duplex-modified electrode through hybridization of AQ-ODN with ODN-SH on the gold electrode. We used an amperometric technique for its photocurrent measurement. The large photocurrent was observed by irradiation of a DNA modified electrode at 365 nm. We also measured photocurrent with different DNA sequences on gold electrodes.

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