Development of D-π-A-type Fluorinated Tolanes Showing Blue, Yellow, and Red Fluorescence in Solid-State by Precise Molecular Design and Their Application to White Fluorescent Materials

Abstract

Recently, solid-state luminescent materials have become indispensable functional materials for our daily lives as OLED displays and lighting devices. Therefore, developing solid-state fluorescent molecules has attracted much attention. The authors found that the appropriate introduction of fluoro-substituents into non-fluorescent tolane leads to blue, yellow, and red-fluorescent molecules that fluoresce in the solid state via controlling their electronic and aggregated structures. Here, we outline the solid-state fluorescence properties of various fluorinated tolanes and their correlation with molecular structures, as well as their application to white fluorescent materials utilizing the additive nature of blue and yellow fluorescence.