Multi-mode waveguides from ultra-long self-assembled hexagonal faceted microtubules of a benzothiadiazole molecule.

Length controlled (μm–mm–cm) self-assembly of hexagonal faceted microtubules has been achieved using a phase-transfer solution processing approach from 1. The self-assembled structures exhibit both polarized light emission and multi-mode waveguide properties over large length scales. The multi-mode waveguide characteristics are analyzed using a combination of experiment and finite-difference-time-domain calculations.