Synthesis and photophysical characterization of phosphorescent platinum(II) bis-(trimethylsilyl)ethynyl-phenanthroline organometallic complexes with bis-arylethynyl derivatives
作者:Michito Shiotsuka、Taiki Asano、Yoshihiro Kurono、Rikuo Ono、Ryuta Kawabe
DOI:10.1016/j.jorganchem.2017.09.009
日期:2017.11
Phosphorescent platinum(II) phenanthroline organometallics, Pt(3,8-Phen≡TMS)(≡Ph-R)2, of respective arylethynyl ligands with different substituents (R = H (1), 4-Me (2), 4-t-Bu (3), 4-F (4), 3-F (5), 2-F (6), 3,5-di-t-Bu (7), 4-CF3 (8), 3,5-di-CF3 (9), 4-COOMe (10), 4-NO2 (11)) were synthesized by transmetalation with copper(I) ion. The visible luminescence of these organometallics in deoxygenated
各自具有不同取代基的芳基乙炔基配体的磷光铂(II)菲咯啉有机金属化合物Pt(3,8-Phen≡TMS)(≡Ph-R)2(R = H(1),4-Me(2),4- t- Bu(3),4-F(4),3-F(5),2-F(6),3,5-di- t - Bu(7),4-CF 3(8),3通过铜(I)离子的重金属化合成了(5-di-CF 3(9),4-COOMe(10),4-NO 2(11))。这些有机金属在脱氧CH中的可见光2 Cl 2被指定为磷光,11种有机金属的DFT计算清楚地支持了3 MLCT / 3 LLCT的混合跃迁(LLCT =配体到配体的电荷转移)的磷光分配。在观测到的磷光发射能量值与最低激发三重态与基态单重态之间的差值(通过DFT或TD-DFT计算)之间具有良好的线性相关性,该相关性反映了这些配合物的相关MO在光激发三重态下,MLCT和LLCT中都包含了它们。