The free radicals, 1,5-diisopropyl-3-(4-dimethylaminophenyl)-6-oxoverdazyl and its vinylog 1,5-diisopropyl-3-(4-dimethylaminophenylethenyl)-6-oxoverdazyl  were synthesized using standard techniques. Both molecules feature  electron rich aryl rings along with electron poor verdazyl acceptors.  This results in low energy charge transfer transitions which also result  in a change in the spin distribution of the radical. We report a  detailed characterization of both molecules including electronic  spectroscopy and electrochemistry. Light induced changes in spin  distribution may have important application in the design of advanced  materials.

Donor-Acceptor verdazyl radicals

243rd National Meeting (2012)

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