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- Title
Sequence-Dependent Photocurrent Generation through Long-Distance Excess-Electron Transfer in DNA.
- Authors
Lin, Shih ‐ Hsun; Fujitsuka, Mamoru; Majima, Tetsuro
- Abstract
Given its well-ordered continuous π stacking of nucleobases, DNA has been considered as a biomaterial for charge transfer in biosensors. For cathodic photocurrent generation resulting from hole transfer in DNA, sensitivity to DNA structure and base-pair stacking has been confirmed. However, such information has not been provided for anodic photocurrent generation resulting from excess-electron transfer in DNA. In the present study, we measured the anodic photocurrent of a DNA-modified Au electrode. Our results demonstrate long-distance excess-electron transfer in DNA, which is dominated by a hopping mechanism, and the photocurrent generation is sequence dependent.
- Subjects
PHOTOCURRENTS; BASE pairs; CHARGE transfer; CHARGE exchange; PHOTOCHEMISTRY; DNA structure; GOLD electrodes
- Publication
Angewandte Chemie, 2016, Vol 128, Issue 30, p8857
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201602850