Four new cyclometalated phenylisoquinoline-based Ir(III) complexes: Syntheses, structures, properties and DFT calculations
摘要:
Four new cyclometalated phenylisoquinoline-based iridium(III) complexes [Ir(C boolean AND N)(2)( bipy)]PF6(5a-5d) (bipy = 2,2'-bipyridine) have been synthesized and fully characterized, where the C<^>N ligands are 1-(4-(trifluoromethyl) phenyl)isoquinoline, 4-(isoquinolin-1-yl)benzaldehyde, 4-(isoquinolin-1-yl)benzonitrile and 1-(3-fluoro-4-methylphenyl)isoquinoline, respectively. The crystal structures of 5a and 5c have been determined. The photophysical and electrochemical properties of these new complexes 5a-5d have been studied. All Kill) complexes exhibit orange phosphorescence in dichloromethane solution at room temperature with a maximum at 593-618 nm, quantum yield of 0.046-0.16. The frontier molecular orbital diagrams and the lowest-energy electronic transitions of 5a-5d have been calculated with density functional theory (DFT) and time-dependent OFT (TD-DFT). (C) 2014 Elsevier B.V. All rights reserved.
Four new cyclometalated phenylisoquinoline-based Ir(III) complexes: Syntheses, structures, properties and DFT calculations
摘要:
Four new cyclometalated phenylisoquinoline-based iridium(III) complexes [Ir(C boolean AND N)(2)( bipy)]PF6(5a-5d) (bipy = 2,2'-bipyridine) have been synthesized and fully characterized, where the C<^>N ligands are 1-(4-(trifluoromethyl) phenyl)isoquinoline, 4-(isoquinolin-1-yl)benzaldehyde, 4-(isoquinolin-1-yl)benzonitrile and 1-(3-fluoro-4-methylphenyl)isoquinoline, respectively. The crystal structures of 5a and 5c have been determined. The photophysical and electrochemical properties of these new complexes 5a-5d have been studied. All Kill) complexes exhibit orange phosphorescence in dichloromethane solution at room temperature with a maximum at 593-618 nm, quantum yield of 0.046-0.16. The frontier molecular orbital diagrams and the lowest-energy electronic transitions of 5a-5d have been calculated with density functional theory (DFT) and time-dependent OFT (TD-DFT). (C) 2014 Elsevier B.V. All rights reserved.