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Monomer for use in preparation of a polymer to be used in optical devices

A technology for optical devices, polymers, applied in the field of new monomers for the preparation of polymers

Inactive Publication Date: 2006-07-12
CAMBRIDGE DISPLAY TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the prior art, there are deficiencies in monomers suitable for the preparation of polymers capable of emitting "deep red light" or of light emitting at other wavelengths, especially "red light"

Method used

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  • Monomer for use in preparation of a polymer to be used in optical devices
  • Monomer for use in preparation of a polymer to be used in optical devices
  • Monomer for use in preparation of a polymer to be used in optical devices

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0124] Preparation of pentamer monomers

[0125]

[0126] Pentamer

R1

R2

R3

R4

R5

R6

1

H

H

C 6

H

H

H

2

C 6

H

C 6

H

H

H

3

C 6

H

H

H

H

H

[0127] (A) Synthesis of Pentamer 1

[0128] Step 1 (Stille coupling)

[0129]

[0130] "Trimer 7" "Pentamer 1 parent material"

[0131] Terpolymer 7 was prepared as disclosed in WO 01 / 49768.

[0132]2-(Tributylstannyl)thiophene (22.34g, 59.9mmol), trimer 7 (15.00g, 23.9mmol) and tetrakis(triphenylphosphine)palladium(0) (0.55g, 2mol%) in toluene (200mL) to reflux. The reaction was monitored by thin layer chromatography (developed with hexane). After 18 h, the reaction mixture was cooled to room temperature, then filtered through silica. The filtrate was evaporated to dryness and recrystallized from hexane to give 10.7 g of product (70.7% ...

Embodiment 2

[0150] Polymer preparation

[0151] According to the method of WO 00 / 53656, in the presence of 10mol% bromothiophene (used to limit the molecular weight), through 9,9-dioctylfluorene-2,7-diethylene borate (1.9132g, 3.6 mmol) and pentamer 1 (2.8526 g, 3.6 mmol) in toluene (40 ml) prepared the polymer of the invention. The crude polymer was passed through a Celite column, eluting with toluene, and precipitated in methanol to give the final polymer (9,9-di-n-octylfluorene-pentamer 1). Last Mp ~ 23,000.

Embodiment 3

[0153] Electroluminescent device

[0154] A suitable device structure is shown in figure 1 . The positive electrode 2 is a layer of transparent indium-tin oxide (“ITO”) supported on a glass or plastic substrate 1 . The thickness of the two layers of the positive electrode is 1000 to 2000 Å, usually about 1500 Å. The negative electrode 5 is a Ca layer, which has a thickness of about 1500 Å. Between these two electrodes is a light-emitting layer 4 with a thickness of up to about 1000 Å. The light-emitting layer 4 contains 0.5-30 wt% of the polymer of the present invention, and the rest of the light-emitting layer consists of hole and / or electron transport substances and / or light-emitting materials. Advantageously, the device comprises a layer 3 of PEDOT hole transport substance with a thickness of about 1000 Å. Layer 6 is a sealant layer of suitable thickness.

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Abstract

A monomer having general Formula (I) which may be substituted or unsubstituted: where E and E are the same or different and are reactive groups capable of undergoing chain extension; X is O, S, NR5, R5C-CR6 or R5-CR6; Y is O, S, NR7, R7C-CR8 or R7C-CR8; R5, R6 R7 and R8 are the same or different and each is independently H or a substituent group; and each Ar is the same or different and is independently a substituted or unsubstituted aryl or heteroaryl group.

Description

field of invention [0001] The present invention relates to a new class of compounds, in particular a new monomer for the preparation of polymers. [0002] The polymers prepared from the monomers of the present invention are expected to be suitable for use in optical devices, for example, including electroluminescent devices or photovoltaic devices. Background technique [0003] Electroluminescent devices are structures that emit light when subjected to an applied electric field. In its simplest form, an electroluminescent device comprises a light emitting layer positioned between two electrodes. The negative electrode injects negative charge carriers (electrons) into the light-emitting layer, while the positive electrode injects positive charge carriers (holes) into the light-emitting layer. Luminescence occurs when electrons and holes combine in the light-emitting layer to generate light. As a Practical aspect, one of electrodes is usually transpar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D417/14C08G61/10C09K11/06H01L51/50C08G61/12C09D5/22C09D185/00H05B33/14H10K99/00
CPCC09K11/06Y10S428/917H01L51/4253C07D417/14H01L51/5012H01L51/0039C09K2211/1425C09K2211/1458C09K2211/1007H01L51/0036C09K2211/1051C09K2211/1416C08G61/10C09K2211/1092Y02E10/549C09K2211/1483C09K2211/1408H01L51/0043Y02P70/50H10K85/115H10K85/151H10K85/113H10K30/30H10K50/11H10K30/50
Inventor J·伯勒斯C·汤斯T·庞斯J·哈尔斯
Owner CAMBRIDGE DISPLAY TECH LTD