Polysilafluorene luminescent material with hole transmission groups, and preparation and application thereof

A technology of hole-transporting groups and light-emitting materials, which is applied in the field of polysilfluorene light-emitting materials and its preparation and application, can solve the problems of low efficiency of blue light-emitting materials, and achieve good hole injection and transport, good application prospects, The effect of high device efficiency

Inactive Publication Date: 2016-06-01
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Red, green and blue primary color materials are needed to make displays. At present, the performance of red and green materials has reached the practical requirements, but the efficiency of blue light-emitting materials is still low.

Method used

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  • Polysilafluorene luminescent material with hole transmission groups, and preparation and application thereof
  • Polysilafluorene luminescent material with hole transmission groups, and preparation and application thereof
  • Polysilafluorene luminescent material with hole transmission groups, and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Preparation of 2,2'-dinitro-4,4'-dibromobiphenyl

[0034] 140 grams of 2,5-dibromonitrobenzene, 120 grams of copper powder, and 500 ml of DMF were reacted at about 125 degrees for about 5 hours, cooled, and 400-500 ml of toluene was added, and the copper powder was filtered off. The filtrate was washed with copious amounts of water. Anhydrous magnesium sulfate was added to dry. Filter and spin off toluene. A yellow solid was obtained. Recrystallization from 100 ml of ethanol gave 75 g of a yellow powder with a yield of 75%. 1 HNMR (400MHz, CDCl 3 )δ7.18(2H,d,J=8.2),7.85(2H,dd,J=8.2,2.0),8.39(2H,d,J=2.0); 13 CNMR (100MHz, CDCl 3 ) δ122.9, 128.1, 131.9, 132.0, 136.6, 147.4.

[0035] (2) Preparation of 2,2'-diiodo-4,4'-dibromobiphenyl

[0036] Pre-frozen 10 / 20 g sodium nitrite / water solution and 100 / 240 g potassium iodide / water solution;

[0037] Place 20 grams of 2,2'-dinitro-4,4'-dibromobiphenyl obtained in step (1), 20 grams of iron powder, and about 600 mi...

Embodiment 2

[0046] (1) Synthesis of 4-(methoxydecyloxy-(4-bromobenzene))-triphenylamine

[0047] The synthetic route is shown below:

[0048]

[0049] The specific synthesis steps are: take a 250mL single-neck flask, add 4.94g (10mmol) 1-[4-[N-(diphenylamino)phenyl]methoxy]-10-bromodecane, 2g (11.56mmol) 4- Bromophenol, 2.76g (20mmol) potassium carbonate, 0.23g potassium iodide, DMSO 100mL. After changing nitrogen three times, it was heated to 132°C and the reaction was stirred overnight. The next day, extracted with toluene, washed with saturated brine, dried over magnesium sulfate, and purified by silica gel column chromatography. Colorless mucus, 76% yield. of the resulting product 1 H spectrum and 13 The C spectrum is as Figure 4 and Figure 5 shown. The identification data is as follows: 1 HNMR (400MHz, CDCl 3 ,ppm)7.256(d,2H,J=8.8),7.257~7.212(6H),7.10~7.05(6H),7.000(t,2H),6.770(d,2H,J=8.8),4.442(s, 2H), 3.910(t, 2H), 3.496(t, 2H), 1.765(m, 2H), 1.632(m, 2H), 1.40~1.2...

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Abstract

The invention belongs to the technical field of organic luminescent materials, and discloses a polysilafluorene luminescent material with hole transmission groups, and preparation and application thereof. The structural general formula of the luminescent material is disclosed as Formula (I), wherein the hole refers to a hole transmission group. The preparation method comprises the following steps: carrying out reaction on 2,2'-diiodo-4,4'-dibromobiphenyl, butyl lithium and silicon tetrachloride to obtain 9,9'-dichlorosilafluorene; carrying out reaction bromine-atom-containing carbazole or triarylamine and butyl lithium or metal magnesium to obtain corresponding organic lithium or a Grignard reagent, and adding the organic lithium or Grignard reagent into the 9,9'-dichlorosilafluorene solution to react, thereby obtaining a 2,7-dibromosilafluorene monomer of which the side group is provided with carbazole or triphenylamine; and finally, carrying out polymerization reaction on the monomer to obtain the polysilafluorene luminescent material with hole transmission groups. The luminescent material can be used in the fields of electroluminescence, photovoltaic batteries, nonlinear optics and transduction.

Description

technical field [0001] The invention belongs to the technical field of organic light-emitting materials, and particularly relates to a polysilicon fluorene light-emitting material with hole transport groups, preparation and application thereof. Background technique [0002] Since the Japanese scientist Hideki Shirakawa discovered that polyacetylene conducts electricity in 1977, this conductive polymer, known as the "fourth-generation polymer material", has attracted many scientists for its outstanding optoelectronic properties. Compared with inorganic materials with the same or similar uses, conductive polymers have the advantages of low density and easy processing. Due to the conjugation characteristics of this type of material structure, it can transport charges and excited light, which can or may be used in many electronic or optoelectronic devices, such as polymer light-emitting diodes, photovoltaic cells, field effect transistors, etc. The potential application prospec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C08G61/12H01L51/50H01L51/54
CPCC09K11/06C08G61/121C08G61/123C09K2211/1466C09K2211/1491H10K85/111H10K50/00Y02E10/549
Inventor 莫越奇
Owner SOUTH CHINA UNIV OF TECH
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