Polycationic High-Spin States of One- And Two-Dimensional (Diarylamino)Benzenes as Studied By Pulsed Esr/Electron Spin Transient Nutation (Estn) Spectroscopy

Kazunobu Sato Department of Chemistry Faculty of Science, Osaka City University, Sumiyoshi-ku, Osaka, 558, Japan

Mutsuo Furuichi Department of Chemistry Faculty of Science, Osaka City University, Sumiyoshi-ku, Osaka, 558, Japan

Masafumi Yano Department of Chemistry Faculty of Science, Osaka City University, Sumiyoshi-ku, Osaka, 558, Japan

Daisuke Shiomi Department of Material Science, Faculty of Science, Osaka City University, Sumiyoshi-ku, Osaka, 558, Japan

Kyo Abe Department of Chemistry Faculty of Science, Osaka City University, Sumiyoshi-ku, Osaka, 558, Japan

Takeji Takui Department of Chemistry Faculty of Science, Osaka City University, Sumiyoshi-ku, Osaka, 558, Japan

Koichi Itoh Department of Material Science, Faculty of Science, Osaka City University, Sumiyoshi-ku, Osaka, 558, Japan

Akiji Higuchi Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka, 565, Japan

Katsuhmo Katsuma Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka, 565, Japan

Yasuhiko Shirota Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka, 565, Japan

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Abstract

Polycationic high-spin states of star-burst molecules based on (diarylamino)benzenes have been studied by cw and pulsed ESR spectroscopy. An electron spin transient nutation (ESTN) method based on pulsed ESR spectroscopy was applied to the dicationic and tricationic high-spin states of N,N,n',n'-tetra(4-anisyl)-2,4-dimethyl-1,5-phenylenediamine and N,N,n′,n′,N″,N″-hexa(4-anisyl)-1,3,5-triaminobenzene, respectively, in order to identify the spin multiplicity of the polycationic states. The observed 2D nutation spectra of the dicationic and tricationic states unequivocally showed that the dicationic and tricationic states are ground-state triplet and quartet, respectively.

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Polycationic High-Spin States of One- And Two-Dimensional (Diarylamino)Benzenes as Studied By Pulsed Esr/Electron Spin Transient Nutation (Estn) Spectroscopy

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Polycationic High-Spin States of One- And Two-Dimensional (Diarylamino)Benzenes as Studied By Pulsed Esr/Electron Spin Transient Nutation (Estn) Spectroscopy

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