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. Author manuscript; available in PMC: 2013 Oct 28.
Published in final edited form as: Phys Chem Chem Phys. 2012 Jul 31;14(40):13754–13771. doi: 10.1039/c2cp41602f

Fig. 2.

Fig. 2

Binding modes of donors and acceptors influence their participation in DNA CT. Δ-[Rh(phi)2(phen)]3+ (top left), intercalates between the DNA bases and is thus well coupled to the DNA π-stack and can participate in DNA CT. In contrast, [Ru(NH3)6]3+ (center right) which electrostatically binds the negatively charged phosphate backbone and Λ-[Ru(phen)3]2+ (bottom right) which binds within the major groove, are not well coupled and do not participate in DNA CT.