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Polymer containing thiophene sulfone and preparation method thereof, and organic electroluminescent device

A polymer, thiophene sulfone technology, applied in the field of organic electroluminescent devices, can solve problems such as poor thermal stability, poor luminous efficiency, and short component life, achieve novel structure, solve low efficiency problems, and film formation. Excellent performance

Inactive Publication Date: 2014-07-02
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The carrier mobility of traditional electron transport materials is one-thousandth of that of hole transport materials, and the thermal stability is not good. Therefore, it often leads to problems such as poor luminous efficiency or short service life of components. Therefore, the development of a High-carrier electron-transport materials are the focus of the development of organic electroluminescent device materials

Method used

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  • Polymer containing thiophene sulfone and preparation method thereof, and organic electroluminescent device
  • Polymer containing thiophene sulfone and preparation method thereof, and organic electroluminescent device
  • Polymer containing thiophene sulfone and preparation method thereof, and organic electroluminescent device

Examples

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preparation example Construction

[0037] The preparation method of the polymer containing thiophene sulfone of one embodiment, such as figure 1 shown, including the following steps:

[0038] Step S1, providing compound A and compound B.

[0039] The structural formula of compound A is: Among them, R 1 for C 1 ~C 20 of alkyl.

[0040] The structural formula of compound B is:

[0041] Step S2, preparing polymer P containing thiophene sulfone.

[0042] In an oxygen-free environment, add compound A and compound B at a molar ratio of 1:1 to 1:1.2 into an organic solvent containing a catalyst and an alkali solution, and perform a Suzuki coupling reaction at 70°C to 130°C for 12 hours to 96 hours , the catalyzer is the mixture of organic palladium or organic palladium and organic phosphorus ligand, obtains the polymer P containing thiophene sulfone represented by the following structural formula:

[0043]

[0044] Wherein, n is an integer of 10-100.

[0045] In this embodiment, the Suzuki coupling reac...

Embodiment 1

[0064] This example discloses poly{9,9-di-n-octylfluorene-2,7-diyl-co-thiophene sulfone-2,5-diyl} (polymer P1 containing thiophene sulfone) with the following structural formula:

[0065]

[0066] The preparation process of the above-mentioned polymer P1 containing thiophene sulfone is as follows:

[0067] Under argon protection, 9,9-di-n-octylfluorene-2,7-dipinacol borate (128 mg, 0.2 mmol), 2,5-dibromothiophene sulfone (54 mg, 0.2 mmol) were added In the flask filled with 10ml of toluene solvent, after fully dissolving, potassium carbonate (2mL, 2mol / L) solution was added into the flask, vacuumized to deoxygenate and filled with argon, then added bistriphenylphosphine palladium dichloride ( 5.6mg, 0.008mmol); the flask was heated to 100°C for Suzuki coupling reaction for 48h. Subsequently, the polymerization reaction was stopped after cooling down, and 50 ml of methanol was added dropwise to the flask for sedimentation; after filtering through a Soxhlet extractor, the mi...

Embodiment 2

[0075] This example discloses poly{9,9-dimethylfluorene-2,7-diyl-co-thiophene sulfone-2,5-diyl} (polymer P2 containing thiophene sulfone) with the following structural formula:

[0076]

[0077] The preparation process of the above-mentioned polymer P2 containing thiophene sulfone is as follows:

[0078] Under the protection of mixed gas of nitrogen and argon, 9,9-dimethylfluorene-2,7-dipinacol borate (89mg, 0.3mmol), 2,5-dibromothiophene sulfone (82mg, 0.3mmol ) and 15mL tetrahydrofuran into a 50mL two-necked bottle, fully dissolved, and then a mixed gas of nitrogen and argon was introduced to exhaust the air for about 20 minutes, then tetrakistriphenylphosphine palladium (4mg, 0.003mmol) was added into it, and after fully dissolving Then add sodium bicarbonate (3mL, 2mol / L) solution, and then fully ventilate the mixed gas of nitrogen and argon to exhaust the air for about 10min, then heat the two-necked flask to 70°C for Suzuki coupling reaction for 60h. Subsequently, th...

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Abstract

The invention provides a polymer containing a thiophene sulfone. The polymer has a structural formula as described in the specification. In the structural formula, R1 is a C1-20 alkyl group, and n is an integer in a range of 10 to 100. The polymer containing thiophene sulfone has high electron mobility and excellent film forming performance and morphology stability, is applicable as an electron transport layer to an organic electroluminescent device and can improve luminous efficiency of the organic electroluminescent device. The polymer has electron mobility of about 10<-5> cm2 / Vs, so the problem of low efficiency of an organic semiconductor luminescent device is overcome. The invention further provides a preparation method for the polymer containing thiophene sulfone and an organic electroluminescent device using the polymer containing thiophene sulfone.

Description

【Technical field】 [0001] The invention relates to the field of optoelectronics, in particular to a polymer containing thiophene sulfone, a preparation method thereof and an organic electroluminescent device using the polymer containing thiophene sulfone. 【Background technique】 [0002] Organic electroluminescent devices have excellent characteristics such as lightness, thinness, self-luminescence, low power consumption, no need for light source, no viewing angle limitation, high reaction rate and can be fabricated on flexible substrates. Tomorrow's star. The carrier mobility of traditional electron transport materials is one-thousandth of that of hole transport materials, and the thermal stability is not good. Therefore, it often leads to problems such as poor luminous efficiency or short service life of components. Therefore, the development of a High-carrier electron-transport materials are the focus of the development of organic electroluminescent device materials. 【Co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/12H01L51/54
Inventor 周明杰王平张振华张娟娟
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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