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Keywords:

  • directed crystallization;
  • spherulite;
  • solvent-vapor annealing;
  • organic thin films
Thumbnail image of graphical abstract

The growth rate of spherulites in solution-processed, triethylsilylethynyl anthra-dithiophene thin films can vary by a factor of three depending on the surface energy of the underlying substrate. By selectively patterning the underlying substrate to have regions of different surface energies, Y.-L. Loo and co-workers show on page 2692 how they are able to guide crystallization along pre-specified, nonlinear patterns over large areas in the plane of the film.