Controlling electron rebound within four-base π-stacks in Z-DNA by changing the sugar moiety from deoxy- to
Yuta Sannohe1, Seiichiro Kizaki, Shuhei Kanesato
1Department of Chemistry, Kyoto University, Kitashirakawa-Oiwake-cho, Sakyo-ku, Kyoto-shi, Kyoto, 606-8502 (Japan), Fax: (+81) 75-753-3670.
Abstract:
Charge transfer through DNA is of great interest because of the potential of DNA to be a building block for nanoelectronic sensors and devices. The photochemical reaction of 5-halouracil has been used for probing charge-transfer processes along DNA. We previously reported on unique charge transfer following photochemical reaction of 5-bromouracil within four-base π-stacks in Z-DNA. In this study, we incorporated a guanosine instead of a deoxyguanosine into Z-DNA, and found that electron transfer occurs in a different mechanism through four-base π-stacks.
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