| 초록 |
A light-responsive chiral liquid crystal (abbreviated as AZ4ICD) is newly designed, precisely synthesized. The AZ4ICD molecule itself basically forms layer structures: one is a low-ordered chiral smectic A LC phase (SmA*) at high temperatures, and two highly ordered smectic crystal (SmCr1 and SmCr2) phases are subsequently formed at lower temperatures. The helical superstructures of chiral nematic LC phase (N*) can be spontaneously constructed by doping AZ4ICD chiral agents into the achiral nematic molecules. Due to the bent conformational geometry of AZ4ICD, the thermal window of blue LC phase (BP) is expanded by stabilizing the double twisted cylindrical building blocks. Remote-controllable phase transformations are demonstrated by tuning the wavelength of light. This work was mainly supported by Mid-Career Researcher Program (2016R1A2B2011041), BK21 Plus program, Korea, and BRL (2015042417) of Korea.. |
