[21a-PA2-1~28] 12.1 Fabrications and Structure Controls

[21a-PA2-24] Two-Dimensional Molecular Ordering Generated by Photopolymerization with Unpolarized Light

〇Megumi Ota¹, Miho Aizawa¹, Kyohei Hisano^1,2, Norihisa Akamatsu¹, Atsushi Shishido¹ (1.Lab. for Chem. & Life Sci., Tokyo Tech., 2.Ritsumeikan Univ.)

Keywords:Photopolymerization, Molecular Alignment, Photoalignment

The control of molecular alignment and structural pattern in soft material is essential for developing high-performance optical materials. Photoalignment process is known as the practical method to induce molecular alignment. However, this process requires the irradiation with polarized light and photoresponsive dye molecules, and has a limit for the resolution of alignment patterns. Recently, we have proposed a novel method to align liquid crystals induced by photopolymerization with the spatial gradient of light intensity. In this study, we directly generated two-dimensional molecular alignment pattern in polymer films by dye-free photopolymerization process with unpolarized light.