Role of hydrogen in ground and excited state studies of 2-aryl-3-hydroxychromenones in different solvents

Radical scavenging activity (%SC) of three 2-heteroaryl 3-hydroxy chromenones (3-HCs) relative to 3-hydroxy flavones (3-HF) has been determined, using 2,2-diphenyl-1-picrylhydrazyl (DPPH) as a radi...