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Keywords:

  • Organic nanotubes;
  • heterojunctions;
  • organic photonics;
  • exciton;
  • Förster resonant energy transfer (FRET)
Thumbnail image of graphical abstract

Organic photonic heterostructures are constructed through a template-free self-assembly method. The host-guest intermolecular interactions play an essential role in the formation of various block orange-blue-orange and blue/green microtubes. The spatial distribution of excitons is engineered to investigate the excitonic behaviors in light propagation along the axial heterostructures. These results offer a new route to the integration of organic photonic building blocks for optical processing applications.