Photophysical and electrochemical properties of sterically crowded polyarylated boron-dipyrromethenes

► Aryl substituents at pyrrole carbons of BODIPY alters the electronic properties. ► Large bathochromic shifts in absorption and emission bands. ► Large Stokes shifts, good quantum yields and singlet state lifetimes. ► Stable under redox conditions. ► Aryl substituents prevent aggregation in solid state and result in strong fluorescence.