Abstract
Ru(ii)-complexes with polyazaaromatic ligands can undergo direct electron transfer with guanine nucleobases on blue light excitation that results in DNA lesions with phototherapeutic potential. Here we use single molecule approaches to demonstrate DNA binding mode heterogeneity and evaluate how multivalent binding governs the photochemistry of [Ru(TAP)3]2+ (TAP = 1,4,5,8-tetraazaphenanthrene).
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