自主体发光的蓝绿色磷光 Ir（Ⅲ）配合物的合成及光电特性

摘要

A kind of self-host blue-green phosphorescent Ir ( Ⅲ) complexes [( CzPhBI) 2 Ir ( tfmptz), (CzPhBI) 2 Ir(tfmpptz) and (CzPhBI) 2 Ir( fpptz)] was designed and synthesized. CzPhBI, tfmptz, tfmpptz and fpptz were 9-[6-(2-phenyl-1-benzimidazolyl) hexyl]-9-carbazole, 2-(5-trifluoromethyl-1,2,4-triazolyl) pyridine, 2-[ 5-( 4-trifluoromethyl) phenyl-1, 2, 4-triazolyl] pyridine and 2-[ 5-( 4-fluoro) phenyl-1, 2, 4-triazolyl]pyridine, respectively. The structures were confirmed by nuclear magnetic resonance( 1 H NMR and 19 F NMR) and elemental analysis. Photophysical properties were investigated. Electroluminescent performance of Ir(Ⅲ) complexes were characterized by fabricating the non-doped devices with the configura-tion of indium tin oxid(ITO)|N,N'-bis-(1-naphthalenyl)-N,N'-bis-phenyl-(1,1'-biphenyl)-4,4'-diamine (NPB)(30 nm)|4,4'-Bis(9-carbazolyl)-1,1'-biphenyl(CBP)(15 nm)|Ir complexes(30 nm)|1,3,5-tris (1-phenyl-1H-benzo[d]imidazol-2-yl)benzene(TBPI) (30 nm)|LiF(1 nm)|Al(100 nm). The maximum luminance of ( CzPhBI) 2 Ir ( tfmpptz) complexes was 6913 cd / m2 and the maximum luminous efficiency achieved 13. 9 cd / A.%合成了一类自主体蓝绿色磷光铱(Ⅲ)配合物( CzPhBI)2 Ir ( tfmptz),( CzPhBI)2 Ir ( tfmpptz)和(CzPhBI)2 Ir(fpptz)[其中 CzPhBI, tfmptz, tfmpptz 和 fpptz 分别为9-[6-(2-苯基-1-苯并咪唑基)己基]-9-咔唑、2-(5-三氟甲基-1,2,4-三唑基)吡啶、2-(5-[4-(三氟甲基)苯基]-1,2,3-三唑)吡啶和2-[5-(4-氟苯基)-1,2,3-三唑]吡啶].通过核磁共振氢谱和氟谱及元素分析确定其分子结构,并对其光物理性能进行了研究.利用该类配合物作为单发光层制备了器件结构为氧化铟锡(ITO)|N,N＇-二苯基-N,N＇-二(1-萘基)-1,1＇-联苯-4,4＇-二胺(NPB)(30 nm)|4,4＇-N,N＇-二咔唑基联苯(CBP)(15 nm)|Ir 配合物(30 nm)|1,3,5-三(1-苯基-1H-苯并咪唑-2-基)苯(TBPI)(30 nm)|LiF(1 nm)|Al(100 nm)的电致发光器件,其最大亮度为6913 cd/ m2,最大发光效率达13.9 cd/ A.