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Synthesis and magnetic properties of polydiphenylamine derivative bearing stable radical groups |
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| Authors: | Hiromasa Goto Tamotsu Koyano Hiroshi Ikeda Ryozo Yoshizaki Kazuo Akagi |
| Affiliation: | a Tsukuba Research Center for Interdisciplinary Materials Science (TIMS), University of Tsukuba, Ibaraki, 305-8573 Tsukuba, Japan b Institute of Materials Science, University of Tsukuba, Ibaraki, 305-8573 Tsukuba, Japan c Center for Tsukuba Advanced Research Alliance (TARA), University of Tsukuba, Ibaraki, 305-8577 Tsukuba, Japan d Cryogenic Center, University of Tsukuba, Ibaraki, 305-8577 Tsukuba, Japan |
| Abstract: | Poly[4,4′-diphenylamine (3,5-di-tert-butyl-4-hydroxy)benzylidene] was synthesized with a dehydrative polycondensation by using H2SO4 as a catalyst. After treatment with DDQ, the polymer was oxidized with PbO2 to generate a stable radical group in the polymer. The colour of the polymer changed from green to dark red upon the oxidation. ESR spectra showed not only a signal with a g value of 2.004, but also a so-called ‘half-field’ signal with a g value of 4.288. |
| Keywords: | Polymer Absorption Interaction |
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