LAUSR

Abstract Molecularly oriented thin films of non-peripherally pentyl-substituted phthalocyanine (C5PcH2), which exhibits α-type and β-type crystal polymorphs, were fabricated by the bar-coating method. By setting an α-type or β-type seed crystal around the initial position of the coating bar on a substrate, oriented thin films with either an α-type or β-type crystal structure were selectively fabricated, respectively. This was confirmed by grazing-incidence wide-angle X-ray scattering studies of the thin films. Without the seed crystal in the same bar-coating condition, an unidentified crystal polymorph of C5PcH2 appeared in the film state, which was discussed by taking the peak intensities in the X-ray diffraction pattern into consideration.