Photoreactions of DNA with a bimetallic ruthenium(II) polypyridyl complex bridged by an organic chromophore

A new dipyrromethene and its bis-ruthenium(II) and N-methylated analogs have been synthesized and characterized by optical and electrochemical methods. The ruthenium complex shows a greater ability to photo-react with plasmid DNA than its N-methylated congener.52