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Issue 14, 2010
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Efficient DNA photocleavage by [Ru(bpy)2(dppn)]2+ with visible light

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The population and reactivity of two low-lying excited states in [Ru(bpy)2(dppn)]2+ (bpy = 2,2′-bipyridine, dppn = benzo[i]dipyrido[3,2-a:2′,3′-c]phenazine), a weakly emissive 3MLCT state and a long-lived ligand-centered 3ππ* state, lead to efficient photoinduced DNA damage. Irradiation with visible light results in nearly complete DNA cleavage within 30 s (λirr ≥ 455 nm), likely from the combined action of guanineoxidation and the production of reactive oxygen species derived from 1O2.

Graphical abstract: Efficient DNA photocleavage by [Ru(bpy)2(dppn)]2+ with visible light

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Article information

07 Dec 2009
12 Jan 2010
First published
27 Jan 2010

Chem. Commun., 2010,46, 2426-2428
Article type

Efficient DNA photocleavage by [Ru(bpy)2(dppn)]2+ with visible light

Y. Sun, L. E. Joyce, N. M. Dickson and C. Turro, Chem. Commun., 2010, 46, 2426
DOI: 10.1039/B925574E

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