Controlling the optoelectronic properties of narrow bandgap organic chromophores upon isoelectronic bridgehead substitution

Abstract Two types of narrow bandgap organic molecules were synthesized by changing two bridgehead atoms to examine the effect on the optoelectronic properties. Notably, it was found that the bridgehead atoms mostly affected their crystallinity and that the intermolecular forces and their optoelectronic properties were controllable upon manipulating the forces by processing additives.