Synthesis, characterization, photophysics and electrochemical study of luminescent iridium(iii) complexes with isocyanoborate ligands.

A new series of cyclometalated iridium(III) complexes with isocyanoborate ligands [Ir(R(2)ppy)(2)(L)(CNBR'(3))] (R = H or F; L = CNC6H4Cl-4 or PPh3; R' = Ph, C6F5 or C6H4Cl-4), [Ir(biqb)(ppy)(CNBR "(3))] (R " = C6F5 or C6H4Cl-4) and {Ir(ppy)(2)(CN)(n)[CNB(C6F5)(3)](2-n)}(-) (n = 0 or 1) have been synthesized and characterized. Three of these complexes have also been structurally characterized by X-ray crystallography. The photophysical and electrochemical properties of these complexes have been investigated. The effects of isocyanoborate ligands on the luminescence properties of these iridium(III) complexes are also described.