| 초록 |
For the fabrication of remote-controllable optical devices, we synthesized a photo-functionalized surfactant (abbreviated as CHAn). CHAn molecules contain both carbohydrate and azobenzene groups for the vertical alignment (VA) layer of nematic (N) liquid crystal (LC). It also contains the cellobiosyl polar head group for inducing the automatic 2D monolayer on the solid substrates. In case of CHA1, it creates sufficient space in the self-assembled monolayer structure. The N-LC molecules can crawl into the space of the surfactant and form a VA layer. Because the CHA3 molecules make a more dense monolayer structure on the substrates, the N-LC form the planar alignment (PA) layer. The N-LC alignments can be reversibly transformed between VA and PA by UV-Vis light. This work was supported by the MOTIE/KDRC 10051334, BK21 Plus program, and Mid-Career Researcher Program (2016R1A2B2011041). |
