Synthesis and intramolecular magnetic interaction of triphenylamine derivatives with nitronyl nitroxide radicals |
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| Institution: | 1. Division of Materials Science, Faculty of pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan;2. Tsukuba Research Center for Interdisciplinary Materials Science (TIMS), Faculty of pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8573, Japan;3. Center for Integrated Research in Fundamental Science and Technology (CiRfSE), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan;1. Research Reactor Institute, Kyoto University, Osaka 590-0494, Japan;2. Faculty of Science, Yamagata University, Yamagata 990-8560, Japan;3. Institute for Regional Innovation, Yamagata University, Yamagata 990-8560, Japan;4. Faculty of Education, Art and Science, Yamagata University, Yamagata 990-8560, Japan;5. Japan Synchrotron Radiation Research Institute, Hyogo 679-5198, Japan |
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| Abstract: | Two triphenylamine derivatives bearing nitronyl nitroxide radicals, tris4-(1-oxyl-3-oxide-4,4,5,5-tetramethylimidazolin-2-yl)phenyl]amine (1) and N,N-bis4-(1-oxyl-3-oxide-4,4,5,5-tetramethylimidazolin-2-yl)phenyl]-4-methoxyphenylamine (2) were synthesized. Variable-temperature magnetic susceptibility measurements showed the weak antiferromagnetic interactions in the powder samples of 1 and 2. The electrochemical and ESR measurements revealed that the first oxidation process of 1 and 2 corresponds to the oxidation of nitronyl nitroxide moieties. |
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