- Transition metal complexes comprising carbene ligands serving as emitters for organic light-emitting diodes (OLED's)
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Use of transition metal complexes of the formula (I) in organic light-emitting diodes where: M1 is a metal atom; carbene is a carbene ligand; L is a monoanionic or dianionic ligand; K is an uncharged monodentate or bidentate ligand selected from the group consisting of phosphines; CO; pyridines; nitriles and conjugated dienes which form a π complex with M1; n is the number of carbene ligands and is at least 1; m is the number of ligands L, where m can be 0 or ≥1; o is the number of ligands K, where o can be 0 or ≥1; where the sum n+m+o is dependent on the oxidation state and coordination number of the metal atom and on the denticity of the ligands carbene, L and K and also on the charge on the ligands carbene and L, with the proviso that n is at least 1, and also an OLED comprising these transition metal complexes, a light-emitting layer comprising these transition metal complexes, OLEDs comprising this light-emitting layer, devices comprising an OLED according to the present invention, and specific transition metal complexes comprising at least two carbene ligands.
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Page/Page column 34; 35; 36
(2020/03/14)
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- Diversity of the quaternary ammonium salt of the imidazole aryl and and its preparation method and application
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The present invention discloses a diverse arylimidazole quaternary ammonium salt, a preparation method and an application thereof. The diverse arylimidazole quaternary ammonium salt is a compound represented by a formula (L-n'). The diverse arylimidazole quaternary ammonium salt has the following beneficial effects that: the diverse arylimidazole quaternary ammonium salt can be prepared through the one-pot method and is not prepared in a glove box, the raw material (aliphatic or aromatic imine) is subjected to the reaction, the yield is 78-94%, and the target product with high optical purity dr of more than 98:2 is obtained. According to the present invention, operations can be simplified, the yield can be increased, importantly an application range of the compound is expanded, and wide versatility is provided.
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Paragraph 0136; 0137; 0138; 0139; 0140
(2016/11/24)
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- ELECTROLUMINESCENT IMIDAZO-QUINOXALINE CARBENE METAL COMPLEXES
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Metal carbene complexes comprising at least one imidazo-quinoxaline ligand, organic electronic devices, especially OLEDs (Organic Light- Emitting Diodes) which comprise such complexes, a light-emitting layer comprising at least one inventive metal carbene complex, an apparatus selected from the group consisting of illuminating elements, stationary visual display units and mobile visual display units comprising such an OLED, the use of such a metal carbene complex for electrophotographic photoreceptors, photoelectric converters, organic solar cells (organic photovoltaics), switching elements, organic light emitting field effect transistors (OLEFETs), image sensors, dye lasers and electroluminescent devices and a process for preparing such metal carbene complexes.
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Page/Page column 211; 212
(2016/04/04)
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- Enlarging the π system of phosphorescent (C^C*) cyclometalated platinum(II) NHC complexes
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Cyclometalated (C^C*) platinum(II) N-heterocyclic carbene (NHC) complexes are emerging as a new class of phosphorescent emitters for the application in organic light-emitting devices (OLEDs). We present the synthesis of six new complexes of this class to
- Tronnier, Alexander,Poethig, Alexander,Metz, Stefan,Wagenblast, Gerhard,Muenster, Ingo,Strassner, Thomas
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p. 6346 - 6356
(2014/07/07)
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- Facial and practical synthesis of benzimidazole-based N-heterocyclic carbenes
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An efficient synthesis of benzimidazole-based N-heterocyclic carbenes has been developed. The key step in this synthetic methodology was a one-pot protocol for the synthesis of N,N′-diarylaryldiamines starting from aryldiamine and aryl halides.
- Wang, Han,Xia, Yuyu,Lv, Shang,Xu, Jingli,Sun, Zhihua
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supporting information
p. 2124 - 2127
(2013/05/08)
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