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Ru(II) polypyridyl complexes possessing long wavelength absorption and an efficient DNA photocleavage activity exhibit a potential application in photodynamic therapy (PDT). In this article, we reported a Ru(II) polypyridyl complex, [Ru(bpy)2(dpb)]2+ (bpy = 2,2′-bipyridine, dpb = 2,3-bis(2-pyridyl)benzoquinoxaline), that exhibits a very long wavelength 1MLCT absorption, with a maximum at 550 nm, and DNA photocleavage activity in anaerobic conditions in the presence of suitable oxidative quenchers, showing a promising potential application in the PDT of hypoxic tumors.
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Zhou et al. (2009) studied this question.
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