Ionic iridium complex coordinated with tetrathiafulvalene-fused phenanthroline ligand: Synthesis, photophysical, electrochemical and electrochemiluminescence properties

A new cationic iridium(III) complex salt, [Ir(ppy)2(L)]PF6 (ppy = 2-phenylpyridine) (1), was synthesized by using tetrathiafulvalene fused 4′,5′-dimethyldithiotetrathiafulvenyl[4,5-f][1,10]phenanthroline (L) as NˆN ancillary ligand. The photophysical, electrochemical and electrochemiluminescence (ECL) behavior of the complex are investigated. Complex 1 is found to be emissive at room temperature with the λmax value at 607 nm. It is expected that this new luminescent complex 1 would be further explored for promising applications in functional emitting material.