| 초록 |
Light-responsive amphiphilic surfactants containing carbohydrate polar head group and photochromic azobenzene mesogen (abbreviated as RLAS) were newly designed and synthesized for the automatic vertical alignment of nematic liquid crystal. Utilizing the copper(I)-catalyzed [3+2] cycloaddition, the azobenzene mesogen are click-coupled with a carbohydrate compound. The RLAS gradually diffused onto the top of the substrates and self-assembled to the expanded monolayer structure, which can provide enough empty spaces for the nematic liquid crystal molecules to partly penetrate into the expanded structure for the construction of vertical alignment. This work was mainly supported by BRL (2015042417), MOTIE-KDRC (10051334), MOTIE (10047806), and BK21 Plus program, Korea. D.-Y.K. appreciates the support from Global Ph.D. Fellowship Program. |
