Nanoscale engineering of photo aligning Cibacron Brilliant Yellow

Abstract

Photoalignment properties on commercially available textile dye Cibacron Brilliant Yellow exhibit excellent alignment quality. Thin layer of solid films (about 20–100 nm in thickness) shows high thermal and photo stability. Excellent surface energy values (both azimuthal and polar) were achieved. The distinguished alignment properties of this dye extend the field of the sulfuric azo dyes effective for photoalignment. An attractive feature of this dye is its low curing temperature, which is essential for plastic substrates to use it as flexible devices.

Photo tuning of thiophene-2,5-dicarbohydrazide derivatives for their photoalignment ability-molecular modelling studies

“…Although in a very limited scale, this alignment method is already employed in the LCD industry. [1][2][3][4][5][6] Many materials capable to align liquid crystals (LC) have been discovered lately and used for preparation of alignment layers in LCDs. 7,8 However, the lack of proper materials for photoalignment layers in LCDs is still a serious obstacle for application of this technique in the LCD industry in a broader scale.…”