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Dielectric Relaxation of Powdered Molecular Gyrotops Having a Thiophene Dioxide-diyl as a Dipolar Rotor

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journal contribution
posted on 22.10.2018, 13:48 by Miyako Tsurunaga, Yusuke Inagaki, Hiroyuki Momma, Eunsang Kwon, Kentaro Yamaguchi, Kenji Yoza, Wataru Setaka
The dielectric properties of powdered molecular gyrotops with a thiophenedioxide-diyl are reported. Crystals without a solvent molecule show usual dielectric relaxation spectra due to orientation polarization of the dipolar rotor, while a crystal having ethanol as the crystalline solvent molecule showed novel temperature-dependent dielectric relaxation switching by crystal-to-crystal phase transition, which is induced by hydrogen-bonding interactions between thiophene dioxide and ethanol.