Oxidized thioxanthone derivatives, preparation method and application thereof
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A technology for oxidizing thioxanthone and thioxanthone, which is applied in the fields of chemical instruments and methods, organic chemistry, semiconductor/solid-state device manufacturing, etc., and can solve the problem that there is no host material for the light-emitting layer
Active Publication Date: 2016-06-29
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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However, there are still very few phosphorescent devices in the true sense, especially blue phosphorescent devices. The fundamental reason is that there is no suitable host material for the light-emitting layer.
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Embodiment 1
[0079] Synthesis of Oxythioxanthone Derivatives Comp-1
[0080]
[0081] Dissolve 2,7-diphenylthioxanthone and 1M nitrate solution in acetonitrile at a molar ratio of 1:4, stir at room temperature for 4 hours, add a large amount of water to precipitate, filter and recrystallize with ethanol to obtain Oxidized thioxanthone derivative Comp-1, the yield is about 70%; m / z: 380.09 (100.0%), 381.09 (28.0%), 382.08 (4.6%), 381.08 (4.2%), 382.09 (1.7 %). m / z is the mass-to-charge ratio of the target molecule in a low-resolution mass spectrum.
Embodiment 2
[0083] Synthesis of oxidized thioxanthone derivatives Comp-2:
[0084]
[0085] As in Example 1, 2,7-bis(2'-biphenyl)thioxanthone was used instead of 2,7-diphenylthioxanthone to obtain oxidized thioxanthone derivatives Comp-2, which produced The rate is about 70%; m / z: 532.15 (100.0%), 533.15 (40.8%), 534.16 (8.0%), 533.14 (4.8%).
Embodiment 3
[0087] Synthesis of oxidized thioxanthone derivatives Comp-3:
[0088]
[0089] As in Example 1, 2,7-bis(3',5'-terphenyl)thioxanthone was used instead of 2,7-diphenylthioxanthone to obtain oxidized thioxanthone derivatives Comp- 3. The yield is about 70%. m / z: 684.21 (100.0%), 685.22 (53.3%), 686.23 (14.6%), 685.21 (3.2%), 686.22 (1.9%).
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Abstract
The invention discloses an oxidized thioxanthone derivative. Its structural formula is as follows: In formula (1) and formula (2), R1, R2, R3, R4, R5, R6, R7, R8 are respectively selected from hydrogen atom, alkoxy group, alkylthio group, alkylamino group, arylamino group, aryloxy group, arylthio group, aryl group, aromatic heterocyclic group, and R1, R2, R3, R4, R5, At least one of R6, R7 and R8 is an aromatic group. The invention also discloses the preparation method and application of the oxidized thioxanthone derivative, and the oxidized thioxanthone derivative can be used as an organic light-emitting layer of an organic electroluminescent device.
Description
technical field [0001] The invention relates to oxidized thioxanthone derivatives and a preparation method thereof, as well as the application of the oxidized thioxanthone derivatives in organic electroluminescent devices. Background technique [0002] Since 1987, C.W.Tang et al. of Kodak Corporation of the United States first used the vacuum evaporation method to prepare a small molecule thin film sandwich device (C.W.Tang, S.A.Vanslyke, Applied Physics Letters, 1987, 51, 913), and the research on organic electroluminescent materials has been stepping forward. Entered a new era. An organic electroluminescent device is mainly composed of a positive electrode, a negative electrode, and an active layer. Wherein, the active layer is a light-emitting layer, which is sandwiched between the positive and negative electrode layers to form a sandwich structure similar to a sandwich. In order to improve the injection and transport of carriers and improve the working efficiency of de...
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