Molecular alignment control of pentacene molecules deposited on a photocrosslinkable liquid-crystalline polymer film with various thicknesses

Molecular alignment behavior of pentacene molecules sublimed on photoreactive liquid-crystalline polymer (PLCP) layer that are work as a photoalignment layer were explored. Pentacene molecule aligned perpendicular to the director of PLCP with edge-on to the substrate while pentacene on surface region of the bilayer forms the same structure as pentacene-alone substrate that covered the anisotropic edge-on pentacene structure on PLCP surface.