PAa05 全反射減衰法によるアゾ色素を含む交互吸着膜上液晶分子の光配向特性評価

抄録

Photo-induced in-plane alignments of the nematic liquid crystal (LC) molecule, 5CB, have been investigated in the cell with alternate layer-by-layer films of polyelectrolyte and low-molecular weight dyes on the gold electrodes using the attenuated total reflection (ATR) measurement method. Direct red 80 (DR80), azo dye, was employed as an anion; poly(diallyldimethylammonium chloride) (PDADMAC) was used as a polycation. The surface plasmon polaritoh (SPP) was observed in the ATR curves of the LC cells. The properties were sensitively changed by re-orientations of the LC molecules by means of the irradiation of the linearly polarized visible light to the LC cell. In-plane alignments of the LC molecules adjacent to the aligning layer were evaluated by fitting the theoretical ATR curves to the experimental ones.