ABSTRACT
A new chiral liquid crystalline nitroxide radical with a terminal trifluoromethoxy group exhibits not only chiral nematic and chiral smectic A phases but also a twist grain boundary phase in the cooling process. The layer order induced by the trifluoromethoxy group seems frustrated with the helical order.
Acknowledgments
The authors thank Professor Rui Tamura, Kyoto University, for experimental support, including X-ray diffraction measurements.
Disclosure statement
No potential conflict of interest was reported by the authors.