Amine-based organic high-spin systems: Synthesis,electrochemical and spectroscopic studies of polyalkylated one-dimensional oligoaryl triamines |
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| Affiliation: | 1. Unit of Chemistry, Faculty of Engineering, Kansai University, Suita-shi, Osaka 564-8680, Japan;2. Division of Research Initiatives, International Innovation Center, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8520, Japan;3. Department of Chemistry, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan |
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| Abstract: | A polyalkylated triamine, 2,2′,4,4′-tetrabromo-4″-methyl-5,5′-bis(di(3,4-di-methylphenyl)amino)triphenylamine, was designed and successfully synthesized as a model precursor for purely organic cationic high-spin systems. Cyclic voltammetry measurement revealed that the triamine gives stable mono- and dicationic states and fairly unstable tricationic state. Novel electron transfer stopped-flow (ETSF) methods were invoked for characterizing the absorption spectra of the corresponding mono- and oligo-cationic states. The triplet state of the dication was confirmed by ESR spectroscopy. |
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