title: Radical Cation of an Oligoarylamine Having a Nitroxide Radical Substituent: A Coexistent Molecular System of Localized and Delocalized Spins.
abstract: A trimer derivative of oligotriarylamine bearing a nitroxide radical substituent as a localized spin center {N,N-bis[4-(di-4-anisylamino)phenyl]-N-[3-tert-butyl-5-(N-tert-butyl-N-oxylamino)phenyl]amine (1)} was characterized by electrochemical, spectroelectrochemical, and electron paramagnetic resonance spectroscopic measurements. The first and second oxidations of 1 occurred from the triamine moiety, leaving the nitroxide radical moiety intact. The delocalized polaronic state in the triamine moiety was generated by one-electron oxidation of 1, indicating the coexistence of localized and delocalized spins on 1+, where an intramolecular antiferromagnetic interaction was detected.
authors: Department of Molecular Engineering, Graduate School of Engineering, Kyoto University , Nishikyo-ku, Kyoto 615-8510, Japan.
authors: Akihiro
authors: A
authors: Ito
authors: Department of Molecular Engineering, Graduate School of Engineering, Kyoto University , Nishikyo-ku, Kyoto 615-8510, Japan.
authors: Ryohei
authors: R
authors: Kurata
authors: Department of Molecular Engineering, Graduate School of Engineering, Kyoto University , Nishikyo-ku, Kyoto 615-8510, Japan.
authors: Yusuke
authors: Y
authors: Noma
authors: Department of Molecular Engineering, Graduate School of Engineering, Kyoto University , Nishikyo-ku, Kyoto 615-8510, Japan.
authors: Yasukazu
authors: Y
authors: Hirao
authors: Department of Molecular Engineering, Graduate School of Engineering, Kyoto University , Nishikyo-ku, Kyoto 615-8510, Japan.
authors: Kazuyoshi
authors: K
authors: Tanaka