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Electron withdrawing end group modified fluorene-pyrene derivative blue-ray material

A technology of pyrene derivatives and blue light materials, which is applied in the direction of luminescent materials, organic chemistry, halogenated hydrocarbon preparation, etc., can solve the problem of difficult improvement of the chemical purity of polymer materials, changes in luminous intensity and color purity, and constraints on high-performance blue light polymerization In order to achieve the effect of enhancing the solid-state light emission performance, reducing the quenching effect, and increasing the three-dimensional steric hindrance effect

Inactive Publication Date: 2012-09-26
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One defect is that the 9-position of the fluorene structural unit is easily oxidized to produce fluorenone defects, resulting in significant changes in the luminous intensity and color purity of the material; at the same time, the linear fluorenyl polymer material has obvious intermolecular interactions and is easily affected by aggregation. ; In addition, the chemical purity of polymer materials is not easy to improve
These factors severely restrict the development and application of high-performance blue polymer materials and need to be overcome

Method used

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  • Electron withdrawing end group modified fluorene-pyrene derivative blue-ray material
  • Electron withdrawing end group modified fluorene-pyrene derivative blue-ray material
  • Electron withdrawing end group modified fluorene-pyrene derivative blue-ray material

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Embodiment 1

[0038]

[0039] Target compound H1

[0040] According to the reaction route 1, compound 1 is dissolved in the DMSO solvent, and the compound 2 is obtained after reacting with bromane under room temperature.Compounds 2 in toluene solvents, compound 2 and compound 4- (trifluorophyl) benzene boric acid, and the SUZUKI coupling reaction to the target compound 3 under the condition of catalyst at the condition of catalyst.Finally, compound 3 and compound 4 bromodine 4 bromodramine occurs under the condition that the SUZUKI coupling reaction is reacted to the target compound H1 under the condition of catalyst.

[0041] 【Reaction route 1】

[0042]

[0043]

[0044] (A) bromide, KOH (grinding), Ki, DMSO, room temperature; (B) PD (PPH 3 Cure 4 , 2 m k k 2 CO 3 / H 2 O, toluene;

[0045] (C) n-buli, -78 o C to rt, 12 h; (d) PD (PPH 3 Cure 4 , 2 m k k 2 CO 3 / H 2 O, toluene, microwave.

Embodiment 2

[0047]

[0048] Target compound H3

[0049] According to the reaction route 2, compound 13 is dissolved in the DMSO solvent. After reacting with bromane at room temperature, the compound 14 is obtained.Compounds 14 are dissolved in toluene solvents, and the SUZUKI puppet reaction is obtained under the condition of catalyst with compound 6 under the condition of catalysts in the tetrabenzenyl phosphorus. The compound 15 is obtained.Slowly dripping in a compound 15 add liquid bromine diluted with dichloromethane, which reacts to the compound 16.Compound 10 and compound 16 under the condition that the SUZUKI coupling reaction was obtained by the SUZUKI coupling reaction under the condition of a catalyst.Finally, compound 5 and compound 17 occur in the condition that the SUZUKI couplet reacts occurs under the condition of a catalyst in the catalytic agent of the tetrabenzen phenyl phosphorus.

[0023] figure 2 The MALDI-TOF mass spectrometry of the 芘-芴-芴 multi-arm structure materia...

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Abstract

The invention relates to a blue-ray material, in particular to an electron withdrawing end group modified fluorene-pyrene derivative blue-ray material which is a multi-branch fluorenyl derivative with pyrene serving as the core and electron withdrawing end group modified oligomer fluorene serving as branches. The structural general formula is shown in the formula I, wherein R is C1-C20 alkyl, X is an end group selected from one of the groups shown as follows, and n is the number of 9,9-dialkyl-substituted fluorene and is specifically 1, 2 and 3. The electron withdrawing end group modified fluorene-pyrene derivative blue-ray material shows excellent light emission performance, thermal stability, amorphous performance, film forming stability and spectrum thermal stability, and can be used as a luminescent material to be widely applied to organic luminescent devices, especially stable and efficient blue-ray organic electroluminescent devices.

Description

Technical field [0001] The present invention involves an organic luminous material, and more specifically involves a Blu -ray material. It is a multi -arm structure 芴 芴 derivative of the branched arm with 芘 芘 本 本 本 本 本 本 本 本 本 本 本 本.The field of material technology. [0002] technical background [0003] In the future, new information display technology is OLEDS technology, which has the advantages of high -quality, low energy consumption, large screen, foldable, light and thin, and low processing costs.In the mechanical and electrical light emitting display, to achieve a large area of full color display, there must be stable red, green and blue base colors, and high -performance blue electrode light emitting devices are essential for achieving large -screen full -color display.Due to the large gaps of Blu -ray material, Blu -ray can achieve green and red light through energy transfer.Therefore, one of the focus of the current research on mechanical and electrical lighting is to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C07C22/08C07C17/263
Inventor 赖文勇李喆黄维
Owner NANJING UNIV OF POSTS & TELECOMM
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