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White electroluminescent macromolecule material and method for making same
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A polymer material and luminescent technology, applied in luminescent materials, electroluminescent light sources, electric light sources, etc., can solve problems such as poor performance
Active Publication Date: 2008-01-30
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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Regarding the single polymer white lightsystem (Appl. Phys. Lett., 79, 308, 2001 and Macromolecules, 35, 6782, 2002), it is mainly based on the formation of radical excitation recombination of blue or blue-green light PPV polymers in the process of electroluminescence matter, resulting in broad-band luminescence, therefore, its white light polymer devices not only have obvious color voltage dependence, but also have poor performance
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Embodiment 1
[0046] Example 1: Synthesis of 4-bromo-9-(4-tert-butylphenyl)-1,8-naphthalimide
[0047] Under nitrogen protection, 4-bromo-1,8-naphthalene dianhydride (10.0 g, 36.2 mmol), p-tert-butylaniline (6.0 g, 40.1 mmol) and 120 mL of acetic acid were added to the reaction flask as solvent. The reaction was carried out at 130°C for 10 hours under magnetic stirring. Poured into water, filtered, washed with water for several times, and the product was separated by column chromatography to obtain 8.10 g of 4-bromo-9-(4-tert-butylphenyl)-1,8-naphthalimide, white solid, yield 55% .
Embodiment 2
[0048] Example 2: Synthesis of 4-N,N-diphenyl-9-(4-tert-butylphenyl)-1,8-naphthalimide
[0049] To 4-bromo-9-(4-tert-butylphenyl)-1,8-naphthalimide (4.48 g, 11.0 mmol), diphenylamine (1.69 g, 10.0 mmol), anhydrouscarbonic acid under nitrogen protection To a mixture of potassium (1.53 g, 11.0 mmol), cuprous iodide (0.096 g, 0.50 mmol), 18-crown-6 (0.13 g, 0.50 mmol) was added 3 mL of DMPU solvent. The reaction was carried out at 190°C for 20 hours under magnetic stirring. The product was extracted with dichloromethane, washed with acid, washed with ammonia, and washed with water for several times. The product was separated by column chromatography to obtain the product 4-N,N-phenyl-9-(4-tert-butylphenyl)-1,8-naphthoyl Imine 1.74g, orange-red solid, yield 35%.
Embodiment 3
[0050] Example 3: Synthesis of 4-N,N-bis(4-bromophenyl)-9-(4-tert-butylphenyl)-1,8-naphthalimide
[0051] 4-N,N-Diphenyl-9-(4-tert-butylphenyl)-1,8-naphthalimide (1.49 g, 3.0 mmol), tetrabutylamine tribromide (2.87 g, 6.6 mmol) was dissolved in 50 ml of dichloromethane, reacted at room temperature for 10 minutes, poured into water, the organic layer was washed several times with water, and the product was separated by column chromatography to obtain a pure intermediate product 4-N,N-(4-bromophenyl)-9 -(4-tert-butylphenyl)-1,8-naphthoylidene 1.91 g, orange-red solid, yield 97%.
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Abstract
The invention pertains to a white organic light-emitting polymer material and a preparation method thereof. A physical thought of white light emission can be realized by adjusting relative luminous intensity of blue emission and orange emission units in single polymer; poly (fluorene) and derivatives thereof are adopted as blue structure element and naphthalimide derivatives as orange structure element. The structural way that naphthalimide derivatives are grafted to side chains of poly (fluorene) and derivatives thereof by Yamamoto or Suzuki reaction is adopted and relative content of blue emission and orange emission elements is adjusted to realize independent luminescence of blue emission and orange emission elements in single polymer and construct molecular dispersive white organic light-emitting polymer materials.
Description
[0001] This application is a divisional application of an invention patent application with the application number "200410010770.0", the filing date "March 29, 2004", and the invention title "white electroluminescent polymer material and its preparation method". technical field [0002] The invention belongs to a white electroluminescent polymer material and a preparation method thereof. technical background [0003] Since the first report of the electroluminescence phenomenon of poly(p-phenylene vinylene) (PPV) by Burroughs et al. of the University of Cambridge, UK in 1990, polymer electroluminescence materials and devices are easy to realize large-screen display and flexible display due to their simple process. Such outstanding features have received extensive attention and competition from academia and industry. At present, polyphenylene (PPP), polyalkylfluorene (PAF), polystyrene (PPV), polythiophene (PAT) and other representative blue, green and red polymer light-emitti...
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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06H05B33/14
Inventor 王利祥屠国力曹建新刘俊马东阁景遐斌王佛松
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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