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Rear modified polyvinyl carbazole material and preparation method and uses thereof

A technology of polyvinyl carbazole and modifier, applied in the field of organic optoelectronic materials, can solve the problem that the design of π-stacked polymers and related applications have not received widespread attention, and the control strategies for band gap and carrier transport are not targeted design and other issues, to achieve the effect of mild conditions and simple synthesis steps

Inactive Publication Date: 2008-04-16
无锡方圆环球显示技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] So far, a large number of literatures and patents have reported the optoelectronic properties of π-conjugated polymers and their flat panel display applications, while the design and related applications of π-stacked polymers have not received extensive attention, especially their bandgap Control strategies related to carrier transport are still not targeted

Method used

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  • Rear modified polyvinyl carbazole material and preparation method and uses thereof
  • Rear modified polyvinyl carbazole material and preparation method and uses thereof
  • Rear modified polyvinyl carbazole material and preparation method and uses thereof

Examples

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Effect test

Embodiment 1

[0030] Example 1. Preparation of polyvinylcarbazole (PVK-PF) material post-modified with 9-phenyl-fluorene unit:

[0031] 9-Phenyl-fluoren-9-ol

[0032] 9-phenyl-9H-fluoren-9-ol

[0033] Take bromo-benzene (2.1mmol) and magnesium (0.502g, 2.1mmol) to react to generate Grignard reagent, and react with fluorenone (2.1mmol) dissolved in 16mL tetrahydrofuran at 60°C for 24 hours, a large amount of white precipitate is formed, and finally add saturated Color NHCl 4 Convert Grignard salts to alcohols. After the reaction was completed, extracted with ether, dried and rotary evaporated, and purified on a silica gel column with a mixed solvent of petroleum ether:dichloromethane (3:2) to obtain a slightly pale yellow solid tertiary alcohol (90% yield). GC-MS (EI-m / z): 258.1 (M + ). 1 H NMR (400MHz, CDCl 3 , ppm): δ7.691-7.672 (d, J=7.6Hz, 2H), 7.406-7.325 (m, 6H), 7.292-7.236 (m, 5H), 2.508 (s, 1H). 13 C NMR (CDCl 3 , ppm): δ150.658, 143.391, 139.82, 129.339, 128.698, 128.459, 1...

Embodiment 2

[0036] Example 2. Preparation of polyvinylcarbazole material post-modified with triple fluorene unit:

[0037] Take 2,7-bis(9,9-dioctylfluoren-2-yl)-9-phenylfluoren-9-alcohol (0.4g) and polyvinylcarbazole (PVK, Mn=42226; Mw / Mn =2.09, 0.248g) was dissolved in dichloromethane (100mL), and boron trifluoride-ether complex (0.6ml) was added dropwise at room temperature to react for 48 hours. After the reaction was complete, ethanol (50mL) and The reaction was quenched with water (150 mL), extracted with dichloromethane, dried and rotary evaporated, repeatedly reprecipitated by dropping into methanol, and finally obtained a white solid (0.45 g) with petroleum ether drawer. GPC: Mn = 72 591; Mw / Mn = 1.95.

Embodiment 3

[0038] Determination of the photoluminescence spectrum of the polyvinylcarbazole material (PVK-PF) modified after the embodiment 3, 9-phenyl-fluorene unit:

[0039]The product was made into a precise 1 μM dilute solution in chloroform and flushed with argon to remove oxygen. Shimadzu UV-3150 ultraviolet-visible spectrometer and RF-530XPC fluorescence spectrometer were used to measure the absorption spectrum and emission spectrum, and the photoluminescence spectrum was measured at the maximum absorption wavelength of ultraviolet absorption. The solid film was prepared by solution spin-coating film forming technology, and the film thickness was 300nm.

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Abstract

The present invention provides a modified polyvinyl alcohol carbazole material, a method and application thereof, and the invention to the field of the organic photovoltaic material, and specifically to a modified polyvinyl alcohol carbazole material, a preparation method thereof and the application in organic electronic field like the organic flash device and the organic active display. The material has the structure shown as the right formula, and has (1) simple synthesizing steps, mild synthesizing conditions; (2) special electronic structures and photoelectric property like the flash electronic bistable effect; and (3) the advantages of keeping a high thermal stability and glass temperature. Conceivably, the series of materials will be organic photovoltaic functional materials with a commercialization future.

Description

technical field [0001] The invention belongs to the technical field of organic photoelectric materials. It specifically relates to a post-modified polyvinyl carbazole material and a preparation method thereof, and relates to the application of these materials in the fields of organic electricity storage, organic electroluminescence, organic nonlinear optics, chemical and biological sensing, organic laser and the like. technical background [0002] Since 1987, the Tang Research Group of Kodak Company in the United States [Tang, C.W.; Van Slyke, S.A. Appl. Phys. Lett. Marks, R.N.; Mackay, K.; Friend, R.H.; Burn, P.L.; Holmes, A.B.Nature 1990, 347, 539.] published thin-film organic electroluminescent devices (Organic Light -emitting Diodes) and polymer light-emitting diodes (PolymericLight-emitting Diodes), organic flat panel display has become another generation of market-oriented display products after liquid crystal display. At the same time, other organic electronics and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F126/06C08F8/00C09K11/06H01L51/54
Inventor 黄维解令海凌启淡
Owner 无锡方圆环球显示技术股份有限公司
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