Carbazole bridged binuclear metal platinum complex as well as preparation method and application thereof

A technology of binuclear metal and platinum complexes, applied in platinum group organic compounds, platinum organic compounds, chemical instruments and methods, etc.

Active Publication Date: 2021-07-06
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above analysis, the present invention aims to provide a novel carbazole-bridged binuclear metal platinum complex and its preparation method to solve the problem of efficient red and deep red luminescent metal platinum complex aggregation quenching

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  • Carbazole bridged binuclear metal platinum complex as well as preparation method and application thereof
  • Carbazole bridged binuclear metal platinum complex as well as preparation method and application thereof
  • Carbazole bridged binuclear metal platinum complex as well as preparation method and application thereof

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preparation example Construction

[0088] The embodiment of the present invention also provides a preparation method of a carbazole-bridged binuclear metal platinum complex, comprising:

[0089] Step 1, under nitrogen protection, 9-R group-1,3,6,8-tetrakis(pyridin-2-yl)-9H-carbazole and K 2 PtCl 4 Reflux reaction in acetic acid solution to obtain the first complex, the first complex is R 1 and R 2 It is a neutral carbazole bridged dinuclear metal platinum chloride complex (complex I-1 or complex I-2) with Cl and n being 0. After the reaction is completed, the reaction liquid is cooled, and suction filtered; the substance obtained by the suction filtration is washed.

[0090] Step 2. In KPF 6 In the presence of R 1 and R 2At least one of them is 2-isonitrile-1,3-xylene, and the other is an ionic carbazole-bridged binuclear metal platinum complex of Cl or 2-isonitrile-1,3-xylene. After the reaction is completed, the reaction solution is sequentially extracted, dried, filtered, separated and purified to obt...

Embodiment 1

[0114] The synthesis of 9-butyl-1,3,6,8-tetrakis(pyridin-2-yl)-9H-carbazole refers to Wang L, Yang W-W, ZhongY-W, Yao J.Enhancing the Electronic Coupling in Cyclometalated BisrutheniumComplex by Using the 1,3,6,8-Tetra-(pyridin-2-yl)carbazole Bridge[J].DaltonTrans.,2013,42,5611-5614. The prepared compound 9-butyl-1,3,6,8-tetrakis(pyridin-2-yl)-9H-carbazole (54mg, 0.1mol), K 2 PtCl 4 (91mg, 0.22mol) was added to a 50mL two-necked flask containing 7mL of acetic acid under nitrogen protection, heated to 120°C, and reacted for three days. After the reaction was completed, cool to room temperature, precipitated solid, and suction filtered. The obtained solid was washed successively with water (50 mL), methanol (20 mL), and ether (50 mL) to remove some impurities. Then, wash with about 100 mL of dichloromethane solvent until the filtrate is light yellow-green, collect the obtained organic filtrate, and concentrate to dryness to obtain a pure orange-red solid, yield: 53%.

[0115]...

Embodiment 2

[0119] The synthesis of 9-dodecyl-1,3,6,8-tetrakis(pyridin-2-yl)-9H-carbazole refers to Wang L, Yang W-W, Zhong Y-W, Yao J. Enhancing the Electronic Coupling in Cyclometalated Bisruthenium Complex by Using the 1,3,6,8-Tetra-(pyridin-2-yl)carbazoleBridge [J]. Dalton Trans., 2013, 42, 5611-5614. The prepared compound 9-dodecyl-1,3,6,8-tetrakis(pyridin-2-yl)-9H-carbazole (64mg, 0.1mol), K 2 PtCl 4 (91mg, 0.22mol) was added into a 50mL two-necked flask containing 9mL of acetic acid under nitrogen protection, heated to 120°C, and reacted for three days. After the reaction was completed, cool to room temperature, precipitated solids, and suction-filtered. The obtained solids were washed with water (50 mL), methanol (20 mL), and ether (50 mL) in sequence to remove some impurities. Then, it was washed with about 100 mL of dichloromethane solvent until the filtrate was light yellow-green, and the obtained organic filtrate was collected and concentrated to dryness to obtain a pure ora...

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Abstract

The invention relates to a carbazole bridged binuclear metal platinum complex and a preparation method and application thereof, which relate to the field of aggregation luminescent materials, and are used for solving the problem of aggregation quenching of efficient red and dark red luminescent metal platinum complexes. The carbazole bridged binuclear metal platinum complex is shown as a formula I, wherein R is C4H9 or C12H25; at least one of R1 and R2 is 2-isonitrile-1, 3-xylene, and the other one of R1 and R2 is Cl or 2-isonitrile-1, 3-xylene; and n is 1 or 2. The carbazole bridged binuclear metal platinum complex provided by the invention has good phosphorescence emission performance, and can be applied to the fields of luminescence and display devices.

Description

technical field [0001] The invention relates to the field of aggregation luminescent materials, in particular to a carbazole-bridged binuclear metal platinum complex and a preparation method and application thereof. Background technique [0002] Metal-platinum complexes have been widely used in organic light-emitting diodes (OLEDs), molecular probes, and supramolecular assembly due to their good photophysical and photochemical properties. In the past ten years, the design and synthesis of metal platinum complexes with good red and deep red light emission have received extensive attention. [0003] At present, more studies are based on mononuclear metal platinum complexes based on supramolecular assembly. This type of molecular material can form π-π stacking or / and Pt···Pt metal interactions between molecules, effectively changing the lowest energy excited state, and presenting Red and deep red excimers or metal-metal to ligand charge transfer ( 3 MMLCT) state phosphorescen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F15/00C09K11/06
CPCC07F15/0086C09K11/06C09K2211/185C09K2211/1029
Inventor 钟羽武龚忠亮
Owner INST OF CHEM CHINESE ACAD OF SCI
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