Tuning iridium(III) complexes containing 2-benzo[b]thiophen-2-yl-pyridine based ligands in the red region
摘要:
Synthesis and characterization of four iridium(III) complexes containing 2-benzo[b]thiophen-2-yl-pyridine based ligands are reported. The absorption, emission, electrochemistry, and thermostability of the complexes were systematically investigated. The (btmp)(2)Ir(acac) (btmp = 2-benzo[b]thiophen-2-yl-4-methyl-pyridyl, acac = acetyl acetone) was characterized using X-ray crystallography. Calculation on the electronic ground state for (btmp)(2)Ir(acac) was carried out using B3LYP density functional theory, HOMO levels are a mixture of Ir and btmp ligand orbitals, while the LUMO is predominantly btmp ligand based. Introduction of substituents (CH3, CF3) into pyridyl ring in a typical red emitter (btp)(2)Ir(acac) leads to a marked decrease in the sublimation temperature, which is more suitable for OLEDs process. Electrochemical studies showed that (btmp)(2)Ir(acac) has a slightly lower oxidation potential, but (btfmp)(2)Ir(acac), (btfmp)(2)Ir(dbm), and (btfmp)(2)Ir(pic) (btfmp = 2-benzo[b]thiophen-2-yl-5-trifluoromethyl-pyridine, dbm = dibenzoylmethane, pic = 2-picolinic acid) containing CF3 group are much difficult to oxidate than (btp)(2)Ir(acac). The emission characteristics of these complexes can be tuned by either changing the substituents and their position on 2-benzo[b]thiophen-2-yl-pyridine or using different monoanionic ligands, showing emission lambda(max) values from 604 to 638 nm in CH2Cl2 solution at room temperature. (c) 2007 Elsevier B.V. All rights reserved.
A series of novel monocyclometalated [Ir(tpy)(btp)Cl]+ complexes (Ir2–Ir5) were synthesized using 2,2′:6′,2″-terpyridine (tpy) and 2-(2-pyridyl)benzo[b]thiophene (btp) ligands, as well as their derivatives bearing electron-donating tert-butyl (t-Bu) and electron-withdrawing trifluoromethyl (CF3) groups. Ir2–Ir5 exhibited visible-light absorption stronger than that of the known complex [Ir(tpy)(ppy)Cl]+
Luminescence device, display apparatus and metal coordination compound
申请人:CANON KABUSHIKI KAISHA
公开号:EP1191612A2
公开(公告)日:2002-03-27
A luminescence device is principally constituted by a pair of electrodes and an organic compound layer disposed therebetween. The layer contains a metal coordination compound represented by the following formula (1):
wherein M denotes Ir, Rh or Pd; n is 2 or 3; CyN denotes a substituted or unsubstituted cyclic group containing a nitrogen atom connected to M and capable of containing another nitrogen atom and/or a sulfur atom; and CyC denotes a substituted or unsubstituted cyclic group containing a carbon atom connected to M and capable of containing a nitrogen atom and/or a sulfur atom, CyN and CyC being connected to each other via a covalent bond, and each of substituents for CyN and CyC being selected from the group consisting of a halogen atom; nitro group; a trialkylsilyl group containing three linear or branched alkyl groups each independently having 1 - 8 carbon atoms; and a linear or branched alkyl group having 1 - 20 carbon atoms capable of including one or at least two non-neighboring methylene groups which can be replaced with -O-, -S-, -CO-, -CO-O-, -O-CO-, -CH=CH- or -C≡C- and capable of including a hydrogen atom which can be replaced with a fluorine atom; with the proviso that a sum of nitrogen atom and sulfur atom present in ring structures of CyN and CyC is at least 2.
发光器件主要由一对电极和置于其间的有机化合物层构成。该层含有下式(1)所代表的金属配位化合物:
其中 M 表示 Ir、Rh 或 Pd;n 为 2 或 3;CyN 表示含有一个与 M 相连的氮原子并能含有另一个氮原子和/或一个硫原子的取代或未取代的环状基团;CyC 表示含有一个与 M 相连的碳原子并能含有一个氮原子和/或一个硫原子的取代或未取代的环状基团,CyN 和 CyC 通过共价键相互连接,CyN 和 CyC 的每个取代基均选自由卤素原子、硝基、三烷基、四烷基、五烷基、六烷基、七烷基、八烷基和九烷基组成的组;硝基; 三烷基硅烷基,包含三个各自独立具有 1 - 8 个碳原子的直链或支链烷基;具有 1-20 个碳原子的直链或支链烷基,该烷基可包括一个或至少两个非相邻的亚甲基,该亚甲基可被-O-、-S-、-CO-、-CO-O-、-O-CO-、-CH=CH-或-C≡C-取代,并可包括一个氢原子,该氢原子可被一个氟原子取代;但在 CyN 和 CyC 的环结构中存在的氮原子和硫原子之和至少为 2。
Limuninescence device, display apparatus and metal coordination compound
申请人:——
公开号:US20020063516A1
公开(公告)日:2002-05-30
A luminescence device is principally constituted by a pair of electrodes and an organic compound layer disposed therebetween. The layer contains a metal coordination compound represented by the following formula (1):
1
wherein M denotes Ir, Rh or Pd; n is 2 or 3; CyN denotes a substituted or unsubstituted cyclic group containing a nitrogen atom connected to M and capable of containing another nitrogen atom and/or a sulfur atom; and CyC denotes a substituted or unsubstituted cyclic group containing a carbon atom connected to M and capable of containing a nitrogen atom and/or a sulfur atom, CyN and CyC being connected to each other via a covalent bond, and each of substituents for CyN and CyC being selected from the group consisting of a halogen atom; nitro group; a trialkylsilyl group containing three linear or branched alkyl groups each independently having 1-8 carbon atoms; and a linear or branched alkyl group having 1-20 carbon atoms capable of including one or at least two non-neighboring methylene groups which can be replaced with —O—, —S—, —CO—, —CO—O—, —O—CO—, —CH═CH— or —C≡C— and capable of including a hydrogen atom which can be replaced with a fluorine atom; with the proviso that a sum of nitrogen atom and sulfur atom present in ring structures of CyN and CyC is at least 2.
发光器件主要由一对电极和置于其间的有机化合物层构成。该层含有下式(1)所代表的金属配位化合物:
1
其中 M 表示 Ir、Rh 或 Pd;n 为 2 或 3;CyN 表示取代或未取代的环状基团,该基团含有一个与 M 相连的氮原子,并可含有另一个氮原子和/或硫原子;以及 CyC 表示取代或未取代的环状基团,该基团含有一个与 M 相连的氮原子,并可含有另一个氮原子和/或硫原子;CyC 表示一个取代或未取代的环状基团,其中含有一个与 M 相连的碳原子,并可含有一个氮原子和/或一个硫原子,CyN 和 CyC 通过共价键相互连接,CyN 和 CyC 的每个取代基均选自由卤素原子、硝基组成的组;含有三个各自独立具有 1-8 个碳原子的直链或支链烷基的三烷基硅烷基;以及具有 1-20 个碳原子的直链或支链烷基,该烷基可包括一个或至少两个非相邻亚甲基,这些亚甲基可用-O-、-S-、-CO-、-CO-O-、-O-CO-、-CH═CH-或-C≡C-,并能包括一个可被氟原子取代的氢原子;但在 CyN 和 CyC 的环结构中存在的氮原子和硫原子之和至少为 2。
Phosphorescent and luminescent conjugated polymers and their use in electroluminescent assemblies
申请人:Marsitzky Dirk
公开号:US20060093852A1
公开(公告)日:2006-05-04
The invention relates to phosphorescent or luminescent conjugated polymers, whose emission is based on the phosphorescence of covalently bonded metal complexes, optionally combined with the fluorescence of the polymer chain. The invention also relates to a method for producing said polymers and to their use in electroluminescent assemblies.