Benavent Llorenç, Boudreault Pierre-Luc T, Esteruelas Miguel A, López Ana M, Oñate Enrique, Tsai Jui-Yi
Departamento de Quı́mica Inorgánica, Instituto de Sı́ntesis Quı́mica y Catálisis Homogénea (ISQCH), Centro de Innovación en Quı́mica Avanzada (ORFEO-CINQA), Universidad de Zaragoza-CSIC, 50009 Zaragoza, Spain.
Universal Display Corporation, Ewing, New Jersey 08618, United States.
Inorg Chem. 2020 Sep 8;59(17):12286-12294. doi: 10.1021/acs.inorgchem.0c01377. Epub 2020 Aug 28.
To prepare new phosphorescent iridium(III) emitters, 2-phenyl-6-(1-phenyl-1-(pyridin-2-yl)ethyl)pyridine (HL) has been designed and its reactions with [Ir(μ-Cl)(η-COD)] (, COD = 1,5-cyclooctadiene) have been studied. The products obtained depend on the refluxing temperature of the solvent. Thus, complexes Ir(κ-'-L)Cl(CO) (), [Ir(η-COD)(κ-HL)][IrCl(η-COD)] (), and [Ir(μ-Cl)(κL)] () have been formed in 2-ethoxyethanol, propan-2-ol, and 1-phenylethanol, respectively. Complex reacts with K(acac) to give the acetylacetonate derivative Ir(κL)(acac) (). Complexes and are efficient blue-green and green emitters of classes [6tt+1m+2m] and [6tt+3b], respectively. They display lifetimes in the range of 1.1-4.5 μs and high quantum yields (0.54-0.87) in both PMMA films and 2-MeTHF at room temperature.
为了制备新型磷光铱（III）发光体，设计了2-苯基-6-（1-苯基-1-（吡啶-2-基）乙基）吡啶（HL），并研究了其与[Ir（μ-Cl）（η-COD）]（COD = 1,5-环辛二烯）的反应。所得产物取决于溶剂的回流温度。因此，分别在2-乙氧基乙醇、异丙醇和苯乙醇中形成了配合物Ir（κ-'-L）Cl（CO）（）、[Ir（η-COD）（κ-HL）][IrCl（η-COD）]（）和[Ir（μ-Cl）（κL）]（）。配合物与K（acac）反应生成乙酰丙酮衍生物Ir（κL）（acac）（）。配合物和分别是[6tt + 1m + 2m]类和[6tt + 3b]类高效的蓝绿色和绿色发光体。它们在室温下的聚甲基丙烯酸甲酯薄膜和2-甲基四氢呋喃中均表现出1.1 - 4.5 μs的寿命和高量子产率（0.54 - 0.87）。
