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Polysiloxane compound and preparation method and application thereof

A technology of polysiloxane and compound, which is applied in the field of polysiloxane compound and its preparation and application, and can solve the problems of high resistivity of vinyl carbazole polymers

Inactive Publication Date: 2020-06-12
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN105601813A discloses an adamantane-modified polyvinylcarbazole polymer luminescent material. Although its thermal decomposition temperature is as high as 410°C, the resistivity of the vinylcarbazole polymer is relatively high, resulting in a high turn-on voltage

Method used

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  • Polysiloxane compound and preparation method and application thereof
  • Polysiloxane compound and preparation method and application thereof
  • Polysiloxane compound and preparation method and application thereof

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preparation example Construction

[0114] The preparation method of polysiloxane compound of the present invention comprises the steps:

[0115]

[0116] Among them, R 49 , R 50 and R 51 are independently selected from halogen or hydroxyl. Preferably, R 49 , R 50 and R 51 for halogen. More preferably, R 49 , R 50 is a bromine atom, R 51 for the chlorine atom. The structures of Elec and Hole are as described above.

[0117] The preparation method of polysiloxane compound of the present invention specifically comprises the steps:

[0118] (1) Condensing compound A and compound B;

[0119] (2) adding compound D to the reaction product of step (1) to obtain compound E;

[0120] (3) Compound E is hydrolyzed under acidic conditions to obtain Compound F;

[0121] (4) Compound F is self-assembled to form a self-assembled sample, then frozen, vacuumized after freezing, and the solvent is removed to make the self-assembled sample solid; the solid-state self-assembled sample is subjected to in-situ solid-...

Embodiment 1

[0146] Synthesize LPCzSiPO as shown below:

[0147]

[0148] a. Synthesis of the hole transport unit 9-(4-bromophenyl)carbazole

[0149]

[0150] Add 8.49g (30mmol) p-bromoiodobenzene in two-necked flask, 5.5g (33mmol) carbazole, 0.4g (2mmol) CuI, 1g (3.75mmol) 18-crown-6, 6.2g anhydrous potassium carbonate, A magnet. Put it into the extraction device and extract it for 3 times, and fill it with argon gas for protection. Then injected 100mL of anhydrous DMF with a syringe, heated to 155°C, and refluxed with a condenser tube for 24h. After the reaction is completed, first use filter paper to filter out excess potassium carbonate and copper salts generated after the reaction, then extract with dichloromethane, wash with water, and then use anhydrous MgSO 4 After drying, the dried product was filtered and then the solvent was rotated to remove the solvent, and the obtained product was separated and purified through a chromatographic column.

[0151] 1 H NMR (400MHz, CD...

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Abstract

The invention discloses a polysiloxane compound and a preparation method and application thereof. The polysiloxane compound has a hole transport group and an electron transport group so as to have bipolar properties.

Description

technical field [0001] The invention relates to a polysiloxane compound and its preparation method and use. Background technique [0002] Traditional lighting (such as tungsten bulbs, fluorescent lamps, etc.) is not environmentally friendly, has a short service life, and has relatively low luminous efficiency. OLED has the advantages of self-illumination, environmental friendliness, energy saving, etc., and can solve the problems existing in traditional lighting. Electrophosphorescent polymer-based organic light-emitting devices that emit red and green light have made considerable progress in the past decade. Due to the lack of suitable host materials, the development of blue electrophosphorescent polymer-based organic light-emitting devices is far behind that of red and green. [0003] Currently, low-molecular-weight host materials for blue electrophosphorescent OLEDs using FIrpic as a dopant have been widely used. For example, CN102439111A discloses a carbazole-based ph...

Claims

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Application Information

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IPC IPC(8): C08G77/30H01L51/50H01L51/54
CPCC08G77/30H10K85/10H10K50/11H10K2101/40
Inventor 任忠杰罗伟东闫寿科
Owner BEIJING UNIV OF CHEM TECH
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