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We report on the impact on the equatorial and meridional orientation in hairy-rod poly[9,9-bis(2-ethylhexyl)-fluorene-2,7-diyl] thin films when blended with tris-cyclometalated oligo-fluorenylpyridine iridium(III) complex. The presence of this transition-metal complex does not alter the underlying helical motif of the polymer chain or the hexagonal unit-cell intermolecular packing. However, systematic changes in the resulting texture patterning of the crystallites are observed. Crystallites with two preferred $a\text{\ensuremath{-}}b$ orientations, so called type I and II and differing by $30\phantom{\rule{0.3em}{0ex}}\text{degrees}$, are superimposed on an isotropic background that is designated as type III. The extent of meridional alignment for all three is found to be similar.

Influence of star-like iridium complexes in the graphoepitaxy of polyfluorene thin films