基于三重态-三重态湮灭的光子上转换加速可见光照射下鸟嘌呤氧化。

Nucleic acids symposium series (2004) Pub Date : 2009-01-01 DOI:10.1093/nass/nrp092

Kazuo Tanaka, Narufumi Kitamura, Kenichi Inafuku, Yoshiki Chujo

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引用次数: 1

摘要

本文报道了在水介质中激发波长为520nm，激发波长为380nm的荧光聚合物配合物。这种基于三重态湮灭的光子上转换可以通过Ru配合物(敏化剂)和蒽分子(发射器)之间的分子间能量传递有效地发生，并被捕获到水溶性网络聚合物中。在可见光照射下，核黄素在聚合物配合物存在下对2′-脱氧鸟苷进行了氧化反应。结果表明，基于三重态-三重态湮灭的上转换产生的紫外光可以加速氧化分解。

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Acceleration of guanine oxidation under visible light irradiation by photon upconversion based on triplet-triplet annihilation.

We report the fluorescent polymer complex which can show fluorescence emission at 380 nm with the excitation of 520 nm in aqueous media. This photon upconversion based on triplet-triplet annihilation can efficiently take place via inter-molecular energy transfers between the Ru complex as a sensitizer and anthracene molecules as an emitter captured into the water-soluble network polymers. We performed the oxidation reaction of 2'-deoxyguanosine by riboflavin in the presence of the polymer complex with the visible light irradiation. It was clearly indicated that oxidative decomposition can be accelerated by UV light generation via upconversion based on triplet-triplet annihilation.

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Nucleic acids symposium series (2004)

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