| 초록 |
To develop color-changeable molecules with respect to multi-stimuli like chameleon, we newly synthesized a photochromic chiral molecule with chiral naphthyl-based azobenzene mesogens (abbreviated as CMNA). Chiral nematic (N*) LC phase with helical superstructures was induced by introducing the CMNA molecule into an achiral nematic liquid crystal (LC) medium. By controlling the helical pitch length of N*-LC responding to various external stimuli such as temperature, light and electric field, the reflection colors of N*-LC films were precisely tuned. The newly developed chameleon molecule can be a stepping-stone in the fabrication of reversible modulating devices including remote-controllable photo-responsive devices covering the whole visible region. This work was mainly supported by BRL (2015042417), Mid-Career Researcher Program (2016R1A2B2011041), and BK21 Plus program, Korea. |
