Fig 1 (a) Chemical structures of PM6 and Y6; (b) Schematic molecular packing of i-PM6, ani-PM6, i-Y6, and ani-Y6 films; Polarized UV-Vis absorption spectra of (c) i-PM6, (d) ani-PM6, (e) i-Y6, and (f) ani-Y6 films; TEM images of (g) i-PM6, (h) ani-PM6, (i) i-Y6, and (j) ani-Y6 films.