A novel star-shaped Schiff base compound (3) was designed, synthesized and characterized. The thermal stability of 3 was measured. The photophysical properties and solvent effects of 3 were investigated and further analyzed by density functional theory (DFT). The LEDs of 3 were made, and white light was obtained. The results indicate that as-synthesized compound 3 has high thermal stability, favorable fluorescence emission in both solution and the solid states (i.e. dual-state luminescence), in addition, the solid of 3 may be used for white light-emitting diodes (w-LEDs) due to its favorable fluorescence emission and high thermal stability.