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Updated: Jun 20, 2026

Free Radicals in Chemical Biology: from Chemical Behavior to Biomarker Development
Published on: April 15, 2013
Photo-switching of vinylpyrene-substituted 2'-deoxyguanosine and its application
Yoshio Saito1, Yoshiki Takeuchi, Katsuhiko Matsumoto
1Department of Materials Chemistry and Engineering and NEWCAT Institute, School of Engineering, Nihon University, Koriyama, Fukushima 963-8642, Japan. saito@chem.ce.nihon-u.ac.jp
Abstract:
We synthesized C8-vinylpyrene-substituted 2'-deoxyguanosine (VPy)G and studied the photoinduced reversible E-Z isomerization. When E-isomer was irradiated with visible light (>420 nm), E- to Z-isomerization took place very rapidly, while upon irradiation with UV-light ( approximately 365 nm), Z-isomer was converted to E-isomer. When Z-isomer was illuminated with 365- 400 nm light, no fluorescence was observed, while E-isomer showed a very strong fluorescence emission, indicating that (VPy)G could be a useful fluorescence switching molecule.

