A Cocrystal Strategy to Tune the Luminescent Properties of Stilbene-Type Organic Solid-State Materials

摘要

Organic solid-state chromophores have received much attention recently due to their promising optoelectronic applications in the fields of light-emitting diodes, lasers, sensors, and two-photon fluorescent materials. In terms of fundamental studies and practical applications, the ability to tune and control the luminescent color of an organic material is important to achieve multi-color displays and to meet the need of next generation light-emitting materials. To obtain light-emission of an appropriate wavelength remains, however, a challenge. Recent advances in organic fluorescent crystals have indicated that the intermolecular interactions or molecular stacking modes in the solid state play a key role in the observed bulk luminescent characteristics. However, an effective strategy for tuning the luminescence of an organic solid by designing and controlling the orientation, interaction and stacking modes of molecules in a crystal structure remains a long-standing problem.