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Organic light-emitting element with low operating voltage and High efficiency
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A technology of organic light-emitting elements and light-emitting layers, which is applied in electrical components, light-emitting materials, and electric solid-state devices to achieve high-efficiency effects.
Active Publication Date: 2016-08-31
SFC CO LTD
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[0008] However, even with the existing technologies including the above-mentioned prior documents, the current status is that there is a continuous demand for the development of organic light-emitting elements that can realize low-voltage driving and exhibit high efficiency.
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[0131] [Reaction Formula 1-1] Synthesis of [Intermediate 1-a]
[0132]
[0133] Bromobenzene (8.0g, 0.050mol), 2,6-dimethylaniline (6.2g, 0.050mol), palladium acetate (0.22g, 1mmol), 2,2'-bis(biphenylphosphino)-1 - 1'-binaphthalene (1.3g, 2mmol) and sodium tert-butanol (12.2g, 0.120mol) were put into 100ml of toluene, and the flow was changed for 12 hours. After cooling to room temperature, it extracted with ethyl acetate and separated by column chromatography to obtain 7.3 g of [Intermediate 1-a] (yield 73%).
[0136] 1,6-Dibromopyrene (4g, 0.011mol), [Intermediate 1-a] (5.0g, 0.025mol) synthesized in the [Reaction Formula 1-1], sodium tert-butanol (5.3g, 0.055mol), palladium acetate (0.1g, 0.44mmol), and tri-tert-butylphosphine (0.36g, 1.7mmol) were put into 50mL of toluene, and the flow was changed for 12 hours. After cooling to...
[0138] [Reaction Formula 2-1] Synthesis of [Intermediate 2-a]
[0139]
[0140]
[0141] In the [reaction formula 1-1], use 2,6-diethylaniline instead of 2,6-dimethylaniline, and use the same method to obtain [intermediate 2-a] (yield 75 %).
[0142] [Reaction Formula 2-2] Synthesis of [Chemical Formula 2]
[0143]
[0144] In said [reaction formula 1-2], use [intermediate 2-1] synthesized in [reaction formula 2-1] instead of intermediate [1-a], and use the same method to obtain [chemical formula 2 ] (yield 63%).
Synthetic example 3
[0145] Synthesis Example 3: Synthesis of [Chemical Formula 3]
[0146] [Reaction Formula 3-1] Synthesis of [Intermediate 3-a]
[0147]
[0148] In the [reaction formula 1-1], use 2,6-diphenylamineisopropyl ester instead of 2,6-dimethylaniline and use the same method to obtain [intermediate 3-a] (yield 75%).
[0149] [Reaction Formula 3-2] Synthesis of [Chemical Formula 3]
[0150]
[0151] In the [reaction formula 1-2], use the [intermediate 3-a] synthesized in the [reaction formula 3-1] instead of [intermediate 1-a], and obtain [ Chemical formula 3] (yield 56%).
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Abstract
The invention relates to an organic light-emitting element with low operating voltage and high efficiency, and particularly to an organic light-emitting element which comprises the components of a first electrode, a second electrode which faces the first electrode; and a light emitting layer which is arranged between the first electrode and the second electrode, wherein the light emitting layer comprises compounds which are represented by a chemical formula A and a chemical formula D. The structures of the formula A and the formula D are same with contents which are detailed in the description.
Description
technical field [0001] The present invention relates to an organic light-emitting element that can be driven by low voltage and has high efficiency, and particularly relates to an organic light-emitting element that contains a host material and a dopant material of a specific structure used as a light-emitting layer in the organic light-emitting element. Background technique [0002] Organic light emitting diode (OLED) is a display that utilizes self-luminescence, and has a large viewing angle; it can become thinner and shorter than liquid crystal displays; and it has high response speed, so it is used as a full-color (full-color) display. ) display or lighting applications are attracting attention. [0003] According to the function of the material used as the organic layer, the organic light-emitting element can be divided into: light-emitting materials and charge transport materials, such as hole injection materials, hole transport materials, electron transport materials,...
Claims
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