Molecule dispersion type white light polymer material and its preparation method

Abstract

The present invention belongs to a molecular dispersion type white light macromolecular material and its preparation technology field. It is characterized by that according to the principle of 'blue light orange light can be used to synthesize white light' said invention can simultaneously introduce wathet blue light doping agent unit and orange light doping agent unit into dark blue light macromolecular main body by utilizing mode of covalent bond so as to obtain the invented molecular dispersion type white light macromolecular material. It can be used in the field of electroluminescence device, plate display device, background power supply and illumination light source, etc.

Description

technical field

[0001] The invention belongs to molecular dispersion type white light macromolecule material and a preparation method thereof. technical background

[0002] White polymer luminescent materials and devices have very broad application prospects in background light source, lighting source, full-color display, etc., so they have been paid close attention to by people. Compared with other display and lighting technologies, white polymer luminescent materials and devices have outstanding advantages such as simple process, low cost, and easy realization of large-screen display and flexible display. Usually white polymer electroluminescent devices adopt a blend system, which mainly includes two or three kinds of organic small molecules / polymers or polymers / polymers to achieve physical blending. However, the white polymer obtained through the blend system Electroluminescent devices have practical problems such as color instability (emission color is obviously depende...

Examples

Embodiment 1

[0024] Example 1: Synthesis of 9-hexyl-9-(6-(4-amino-1,8-naphthalimide-4-)hexyl)-2,7-dibromofluorene

[0025] Under argon protection, add 2.12g (10mmol) 4-amino-1,8-naphthalimide and 60ml dimethyl sulfoxide to the reaction flask, heat to 120°C, add 0.56g (10mmol) ) Potassium hydroxide, after 10 minutes, add 5.72g (10mmol) 9-hexyl-9-(6-bromohexyl)-2,7-dibromofluorene to the reaction flask, and react for 10 hours. After the reaction, the reaction mixture was poured into water, extracted with dichloromethane, washed three times with water, dried over anhydrous sodium sulfate, concentrated, and the obtained crude product was separated by a silica gel column to obtain 4.97g 9-hexyl-9-(6-(4 -Amino-1,8-naphthoimide-4-)hexyl)-2,7-dibromofluorene, yellow solid, yield: 71%.

Embodiment 2

[0026]Example 2: Synthesis of 9-hexyl-9-(6-(4-dimethylamino-1,8-naphthalimide-4-)hexyl)-2,7-dibromofluorene

[0027] Under argon protection, add 1.41g (2.0mmol) 9-hexyl-9-(6-(4-amino-1,8-naphthalimide-4-)hexyl)-2,7- Dibromofluorene and 20ml dimethyl sulfoxide, add 0.24g (10mmol) 50% sodium hydride to the reaction flask at room temperature, after 10 minutes, add 1.52g (10mmol) methyl iodide to the reaction flask, and react for 5 hours. After the reaction, the reaction mixture was poured into water, extracted with dichloromethane, washed three times with water, dried over anhydrous sodium sulfate, concentrated, and the obtained crude product was separated by a silica gel column to obtain 1.33g 9-hexyl-9-(6-(4 -Dimethylamino-1,8-naphthoimide-4-)hexyl)-2,7-dibromofluorene, yellow solid, yield: 91%.

Embodiment 3

[0028] Example 3: Synthesis of 4-bromo-7-(4-(diphenylamino)phenyl)-2,1,3-benzothiadiazole

[0029] Under argon protection, 2.94g (10mmol) 4,7-dibromo-2,1,3-benzothiadiazole, 2.67g (5mmol) tributyl (4-(diphenyl Amino)phenyl)tin, 0.056g (0.05mmol) tetrakis(triphenylphosphine)palladium, 100ml toluene, react at 100°C for 24 hours. Then cooled to room temperature, the reaction mixture was washed three times with water, dried over anhydrous sodium sulfate, concentrated, and the obtained crude product was separated by silica gel column to obtain 1.74g 4-bromo-7-(4-(diphenylamino)phenyl)- 2,1,3-Benzothiadiazole, orange solid, yield: 76%.

technical field

[0001] The invention belongs to molecular dispersion type white light macromolecule material and a preparation method thereof. technical background

[0002] White polymer luminescent materials and devices have very broad application prospects in background light source, lighting source, full-color display, etc., so they have been paid close attention to by people. Compared with other display and lighting technologies, white polymer luminescent materials and devices have outstanding advantages such as simple process, low cost, and easy realization of large-screen display and flexible display. Usually white polymer electroluminescent devices adopt a blend system, which mainly includes two or three kinds of organic small molecules / polymers or polymers / polymers to achieve physical blending. However, the white polymer obtained through the blend system Electroluminescent devices have practical problems such as color instability (emission color is obviously depende...

Examples

Embodiment 1

[0024] Example 1: Synthesis of 9-hexyl-9-(6-(4-amino-1,8-naphthalimide-4-)hexyl)-2,7-dibromofluorene

[0025] Under argon protection, add 2.12g (10mmol) 4-amino-1,8-naphthalimide and 60ml dimethyl sulfoxide to the reaction flask, heat to 120°C, add 0.56g (10mmol) ) Potassium hydroxide, after 10 minutes, add 5.72g (10mmol) 9-hexyl-9-(6-bromohexyl)-2,7-dibromofluorene to the reaction flask, and react for 10 hours. After the reaction, the reaction mixture was poured into water, extracted with dichloromethane, washed three times with water, dried over anhydrous sodium sulfate, concentrated, and the obtained crude product was separated by a silica gel column to obtain 4.97g 9-hexyl-9-(6-(4 -Amino-1,8-naphthoimide-4-)hexyl)-2,7-dibromofluorene, yellow solid, yield: 71%.

Embodiment 2

[0026]Example 2: Synthesis of 9-hexyl-9-(6-(4-dimethylamino-1,8-naphthalimide-4-)hexyl)-2,7-dibromofluorene

[0027] Under argon protection, add 1.41g (2.0mmol) 9-hexyl-9-(6-(4-amino-1,8-naphthalimide-4-)hexyl)-2,7- Dibromofluorene and 20ml dimethyl sulfoxide, add 0.24g (10mmol) 50% sodium hydride to the reaction flask at room temperature, after 10 minutes, add 1.52g (10mmol) methyl iodide to the reaction flask, and react for 5 hours. After the reaction, the reaction mixture was poured into water, extracted with dichloromethane, washed three times with water, dried over anhydrous sodium sulfate, concentrated, and the obtained crude product was separated by a silica gel column to obtain 1.33g 9-hexyl-9-(6-(4 -Dimethylamino-1,8-naphthoimide-4-)hexyl)-2,7-dibromofluorene, yellow solid, yield: 91%.

Embodiment 3

[0028] Example 3: Synthesis of 4-bromo-7-(4-(diphenylamino)phenyl)-2,1,3-benzothiadiazole

[0029] Under argon protection, 2.94g (10mmol) 4,7-dibromo-2,1,3-benzothiadiazole, 2.67g (5mmol) tributyl (4-(diphenyl Amino)phenyl)tin, 0.056g (0.05mmol) tetrakis(triphenylphosphine)palladium, 100ml toluene, react at 100°C for 24 hours. Then cooled to room temperature, the reaction mixture was washed three times with water, dried over anhydrous sodium sulfate, concentrated, and the obtained crude product was separated by silica gel column to obtain 1.74g 4-bromo-7-(4-(diphenylamino)phenyl)- 2,1,3-Benzothiadiazole, orange solid, yield: 76%.

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