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PPV luminescence oligomer containing biphenyl center

An oligomer and biphenyl technology, which is applied in the field of PPV luminescent oligomers, can solve the problem of not obtaining luminous efficiency, etc., and achieve the effects of excellent emission efficiency, high color purity, and improved quantum efficiency.

Inactive Publication Date: 2009-05-27
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Some of them (such as C ( t BuSSB) 4 ) are also used to make devices, but the device does not obtain the luminous efficiency close to that of solid film

Method used

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  • PPV luminescence oligomer containing biphenyl center
  • PPV luminescence oligomer containing biphenyl center
  • PPV luminescence oligomer containing biphenyl center

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Example 1 The synthesis of the oligomer system centered on biphenyl, the synthetic route is as follows figure 2 .

[0048] Step 1, the structure and synthesis of the central monomer

[0049] Preparation of 2,5,2', 5'-tetramethylbiphenyl: triphenylphosphine (4.012g, 14.4mmol), 2,2'-bipyridine (0.316g, 2mmol), nickel dichloride (0.26 g, 2mmol) and zinc powder (0.0052g, 80mmol) were added to a 100mL round-bottomed flask, and 20mL of anhydrous N,N'-dimethylformamide was added under nitrogen protection, and reacted in an oil bath at 50°C until black After the brown catalyst, add 5.5mL (40mmol) of 2-bromo-1,4-dimethylbenzene, raise the reaction temperature to 80°C, and react for another 8 hours under the protection of nitrogen. After the reaction, filter to remove the residual Zinc powder and other solid substances, the filtrate is spin-dried under reduced pressure and purified by column chromatography to obtain 2,5,2',5'-tetramethylbiphenyl, and spin-dried under reduced pre...

Embodiment 2

[0064] Example 2 Preparation of blue-emitting PPV oligomer electroluminescent device

[0065] Such as Figure 5 Shown is a structural diagram of a multilayer organic light-emitting diode device (OLEDs), which includes sequentially compounded ITO layer, NPB layer, light-emitting layer, Alq 3 layer, LiF layer, Al layer. In this embodiment, the material of the light-emitting layer is tertiary styryl biphenyl TBVB of the oligomer (1) system. This device is treated with commercial ITO (glass coated with indium tin oxide) with plasma oxygen for 5 minutes, after NPB is evaporated, and then vacuum-evaporated thermally deposited oligomer TBVB, and for oligomers with relatively large molecular weight For materials, the light-emitting layer is attached to the ITO / NPB substrate by spin coating with a homogenizer, which is more conducive to large-scale industrial production, and finally vacuum-evaporated lithium fluoride and aluminum electrodes.

[0066] The properties of the above ligh...

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Abstract

A process for syntheszing PPV luminous polymer which contains symbenzene center includes such steps as 1. synthesizing center monomer by inducting multitude functional group structure center substance which contains two or many symbenzene or be similar to A, B, C, D, E, F; the compound is skewness conjugation ring; 2. Selecting and synthesizing side chain monomer; 3. synthesizing the polymer by taking reaction A, B, C, D, E, F with side chain monomer H separately to get polymers of styrene with two or many symbenzene center.

Description

technical field [0001] The invention relates to a PPV polymer, in particular to a PPV luminescent polymer containing a biphenyl center. Background technique [0002] π-conjugated organic polymers have aroused great interest among scientists due to their broad application prospects in electron conduction, nonlinear optics, electronics and optoelectronics. In particular, the application of light-emitting substances in organic light-emitting diodes has been deeply studied. As the basic materials of organic light-emitting diodes, they have the following advantages: relatively simple preparation method; adjustability of emission color. The oligomer, which is the model compound of the corresponding polymer, can not only provide us with the microstructure information of the corresponding polymer system, but also can be used as an active substance for various scientific researches. Benefiting from the certainty of the oligomer structure, its conjugation length has a single distrib...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C15/52C07C25/18C07C25/24C07C255/32H01L33/00H01L51/54
Inventor 马於光何凤张海全杨兵郑岩林栋唐诗
Owner JILIN UNIV
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