A new type of DNA “light-switch”: a dual photochemical sensor and metalating agent for duplex and G-quadruplex DNA†
Abstract
Ru(bpy)2dppz, a well studied “light-switch” metal complex, transforms into a photochemical “light-switch” and DNA damaging agent by incorporating structural strain. This distorted compound is photoreactive and ejects a ligand upon binding duplex and G-quadruplex DNA, producing a reactive metal center that metalates the DNA.