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ABSTRACT
We have synthesized a racemic and enantiomerically enriched all-organic paramagnetic nitroxide radical (NR) liquid crystalline (LC) compound, which contains a chiral NR unit in the mesogen core and a methyl di(ethylene glycol) chain as one of their terminal units. These new compounds showed remarkable substituent effects of the methyl di(ethylene glycol) chain on the phase transition behaviors and hydrophilic properties in contrast to structural analogs of the previous reported NR-LC compounds containing alkoxy chains.
Acknowledgments
The authors thank Professor Hiroshi Umakoshi and Dr. Keishi Suga, Osaka University, for supports of measurements of CD spectra. The authors extend appreciation to Professor Tsuyoshi Kimura, Osaka University, for experimental support, including measurement of magnetic susceptibility. This work was supported in part by the Japan Science and Technology Agency (JST) “Precursory Research for Embryonic Science and Technology (PRESTO)” for a project of “Molecular technology and creation of new function,” by The Naito Foundation Natural Science Scholarship, and by Hitachi Metals. Materials Science Foundation.
