Highly electrochemiluminescent Ru(II) complexes containing 1,3-dihydro-1,1,3,3-tetramethyl-7,8-diazacyclopenta[1]phenanthren-2-one ligand

Electrogenerated chemiluminescence from newly synthesized α-diimine-ligated heteroleptic iridium(III) complexes

“…Yield: 50%, 1 [Ir(2-(2,4-difluorophenyl)pyridine) 2 (L)](PF 6 ) derivatives were synthesized by modification to a previously reported method [33][34][35][36][37][38][39][40][41][42]. A solution of [Ir(dfppy) 2 (Cl)] 2 (122.4 mg, 0.2 mmol) and L (0.4 mmol) dissolved in a mixture of dichloromethane and ethanol (v/v = 3:1, 10 mL) was refluxed for 5 h. The reaction was monitored by TLC.…”

“…In recent years, we have developed efficient ECL materials, which are mostly ruthenium(II)-based complexes with various α-diimine ligands including multinuclear Ru(II) complexes assembled with polyamine dendrimers [33][34][35][36][37][38][39][40][41][42]. Owing to the success of α-diimine ligands to ruthenium(II) complexes in our previous studies, we became specially interested in the possibility of utilizing these ligands to iridium(III) to extend the study on ECL materials.…”