Method for synthetizing white light polymer

Abstract

The invention relates to a method for synthetizing a white light polymer. The method comprises the following steps of: firstly, synthesizing 2,7-dibromo-9,9-dioctyl fluorene, 2,7-dithienyl-9-fluorenone and 2,7-di-2'-(5'-bromine)-thiophene-9-fluorenone by using an organic material, an inorganic material and a solvent by a four-step synthesis method; and finally synthesizing 9,9-dioctyl fluorine and dithienyl fluorenone copolymer, wherein a product is yellow powder, has the number-average molecular weight of 10,102, the weight-average molecular weight of 17,198, high color purity and excellent light-emitting performance, emits white light and has the color coordinates that x is 0.3340 and y is 0.3447. The synthesis method is advanced in process; chemical substances are mixed reasonably; process parameters are accurate; and the synthesis method is a method for synthesizing the white light polymer by using the organic, inorganic and solvent substances and can be directly used for manufacturing organic white light light-emitting diodes.

Description

technical field [0001] The invention relates to a synthesis method of a white light polymer, which belongs to the technical field of preparation and application of organic white light luminescent materials. Background technique [0002] Incandescent lamps and fluorescent tubes are currently the most commonly used white light sources, but their energy utilization efficiency is not high: 90% of the energy of incandescent lamps is converted into heat energy, causing a lot of energy waste, while fluorescent tubes only use 70% of the energy. % of the energy is used for lighting; in order to save energy and improve energy utilization efficiency, it is necessary to develop a white light source; the advantage of OLED lighting is that it has high luminous efficiency, is suitable for large light-emitting surfaces, has soft materials, easy cutting, thin and light shape and drive Low voltage and other characteristics, it is regarded as a substitute for the next generation of lighting. ...

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Problems solved by technology

[0002] Incandescent lamps and fluorescent tubes are currently the most commonly used white light sources, but their energy utilization efficiency is not high: 90% of the energy of incandescent lamps is converted into heat energy, causing a lot of energy waste, while fluorescent tubes only use 70% of the energy. % of the energy is used for lighting; in order to save energy and improve energy utilization efficiency, it is necessary to develop a white light source; the advantage of OLED lighting is that it has high luminous efficiency, is suitable for large light-emitting surfaces, has soft materials, easy cutting, thin and light shape and drive Low voltage and other characteristics, it is regarded as a substitute for the next generation of lighting

[0003] At present, organic white light materials are based on the principle of color addition in chromaticity. White light can be formed by connecting the color coordinate points of red light + green light + blue light to form white light, or by adding two complementary colors orange / yellow light and blue light through the connection line through the white light area. These two methods control the energy transfer from short-wavelength light to long-wavelength light by precisely adjusting the content of each component, so that the light-emitting area of ​​the device covers the entire visible light area to obtain white light; the luminous chromaticity will vary due to the aging speed of the material. This kind of material is easy to produce phase separation under the action of light, heat and electricity during the operation of the device, which makes the spectral stability of the device poor, the driving voltage increases, and the service life is reduced. The material completely loses its luminous function

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