Fig. 2: Aggregation behavior of the dimers in solution and film.

Normalized UV-vis absorption spectra of the TSMAs and Y6 a in solution and b film. c The UV-vis absorption profiles of TDY-α in chloroform with various concentrations. d DSC thermograms of the TSMAs and Y6 with a heating rate of 10 °C min–1 under a nitrogen atmosphere. The 2D GIWAXS diffraction patterns of the as-cast films of e Y6, f TDY-α and g TDY-β. h Line cuts of the GIWAXS images.