Dithieno-annulated benzo[g]coumarins: Synthesis via oxidative photocyclization and study of their photophysical properties

Synthesis and luminescence properties of functionalized V-shaped bis-coumarin derivatives

Three new functionalized V-shaped bis-coumarin derivatives were synthesized for OLED applications.

Coronene-embedded 'super' coumarins

A non-planar π-enlarged coronene-embedded coumarin achieved via pyranone annulation and its cyanated derivative possess bright orange to red emission in both solution and solid states, with scope for bioimaging applications. The multiple redox states, frontier molecular orbital energy levels and strong cofacial π-stacking ability point towards applications in organic optoelectronics.