Core-Modified Naphthalenediimides Generate Persistent Radical Anion and Cation: New Panchromatic NIR Probes
journal contributionposted on 21.09.2012, 00:00 by M. R. Ajayakumar, Deepak Asthana, Pritam Mukhopadhyay
The generation of the first persistent radical cation of naphthalenediimide with Cu2+/Fe3+ under ambient conditions is reported. An alternate anionic trigger generates a persistent radical anion within the same motif. Steric protection and H-bonding enhances the half-life of radical cation by 290-fold. The radical anion and cation have orthogonal spin density, panchromatic and NIR optical bands, which can be applied as attractive multichannel probes.