Tailoring the substituted position for high-efficiency charge transport ability and strong blue solid-state emission in naphthalene derivative

Herein, a novel organic material with high-efficiency charge transport ability and strong blue solid-state emission, referred to as 1,5-di(anthracen-2-yl)naphthalene (1,5-DAN), was designed and synthesized. Different from the common 2,6-position substituted molecules with high-efficiency charge-transport ability and strong blue emission, the 1,5-DAN displays a blue emission caused by the large torsion angle between the substituents and core. Moreover, the single-crystal mobility of 1,5-DAN is as high as 8.41 cm2 V−1 s−1 with a photoluminescence quantum yield up to 20.54%, which is one of the best records in this kind of emerging photoelectric organic semiconductor and shows the great potential in next-generation smart optoelectronics devices.