Synthesis, crystal structure and photophysical properties of a series of new neutral iridium(III) complexes with 2-phenylpyridine

A series of new neutral iridium(Ill) complexes containing strong-field ancillary ligands, [Ir(ppy)(2)(PPh3)L] (ppy = 2-phenylpyridine, PPh3 = triphenylphosphine, L = NCS-, 1; N-3(-), 2; NCO-, 3), have been synthesized and fully characterized by H-1 NMR, IR, ESI mass spectral and elemental analysis. The crystal structure of I has been determined by X-ray analysis. The photoluminescence (PL) spectra of 1-3 show emission maxima at 477, 489 and 485 rim, respectively, corresponding to blue light-emitting of I and blue-green light-emitting of 2 and 3. PL quantum yields (PLQYs) of 1-3 are 0.39, 0.13 and 0.43. respectively. (C) 2009 Elsevier B.V. All rights reserved.