title: Core-modified naphthalenediimides generate persistent radical anion and cation: new panchromatic NIR probes.
abstract: The generation of the first persistent radical cation of naphthalenediimide with Cu(2+)/Fe(3+) 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.
authors.affiliation: Supramolecular and Material Chemistry Lab, School of Physical Sciences, Jawaharlal Nehru University, New Delhi 110 067, India.
authors.forename: M R
authors.initials: MR
authors.lastname: Ajayakumar
authors.forename: Deepak
authors.initials: D
authors.lastname: Asthana
authors.forename: Pritam
authors.initials: P
authors.lastname: Mukhopadhyay