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Updated: Feb 3, 2026

Fluorescence Lifetime Imaging of Molecular Rotors in Living Cells
Published on: February 9, 2012
Dielectric Relaxation of Powdered Molecular Gyrotops Having a Thiophene Dioxide-diyl as a Dipolar Rotor
Miyako Tsurunaga1, Yusuke Inagaki1, Hiroyuki Momma2
1Division of Applied Chemistry , Faculty of Urban Environmental Sciences, Tokyo Metropolitan University , 1-1 minami-Osawa , Hachioji, Tokyo 192-0397 , Japan.
Abstract:
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.
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