Preparation method of zero-dimensional and two-dimensional hybridized all-carbon white fluorescent powder
A phosphor, zero-dimensional technology, applied in chemical instruments and methods, luminescent materials, nanotechnology for materials and surface science, etc., can solve the problem of reducing the luminous intensity of carbon quantum dots, increasing the preparation steps and costs, and limiting carbon materials Optical development and other issues, to achieve the effect of preventing violent bumping, simple method and good dispersion
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Embodiment 1
[0034] A method for preparing a zero-dimensional and two-dimensional hybrid all-carbon white light phosphor, the specific steps are as follows:
[0035] 1) At 180°C, under the protection of nitrogen, stir and heat 1.5 g hexadecylamine and 15 ml octadecene in an oil bath. After the temperature is stable, slowly and evenly add 1.0 g of anhydrous citric acid, and stir for 3 hours. When the reaction is over, stop nitrogen Pass into, cool to room temperature, obtain the crude product of yellow fluorescent powder;
[0036] 2) Use a high-speed centrifuge device, at a speed of 8000r / min, centrifuge for 15 minutes to clean, and repeat the cleaning steps with acetone and absolute ethanol until the solution is milky white;
[0037] 3) Use a vacuum rotary evaporator with a rotary evaporation temperature of 65°C to evaporate acetone and absolute ethanol to obtain a white powder;
[0038] 4) Dissolving the white powder in chloroform, standing for 3 hours, distilling off the solvent chlorof...
Embodiment 2
[0052] A method for preparing a zero-dimensional and two-dimensional hybrid all-carbon white light phosphor, the specific steps are as follows:
[0053] 1) At 185°C, under the protection of nitrogen, stir and heat 1.4g tetradecylamine and 20ml octadecene oil bath. After the temperature is stable, add 1.2g anhydrous citric acid slowly and evenly, and stir for 3.5h. When the reaction is over, stop Nitrogen gas was introduced and cooled to room temperature to obtain the crude product of yellow fluorescent powder;
[0054] 2) Use a high-speed centrifuge device, at a speed of 9000r / min, centrifuge for 10 minutes to clean, and repeat the cleaning steps with acetone and absolute ethanol until the solution is milky white;
[0055] 3) Use a vacuum rotary evaporator with a rotary evaporation temperature of 60°C to evaporate acetone and absolute ethanol to obtain a white powder;
[0056] 4) Dissolving the white powder in chloroform, standing still for 5 hours, distilling off the solvent...
Embodiment 3
[0059] A method for preparing a zero-dimensional and two-dimensional hybrid all-carbon white light phosphor, the specific steps are as follows:
[0060] 1) At 175°C, under the protection of nitrogen, stir and heat 2.0 g of octadecylamine and 25 ml of octadecene in an oil bath. After the temperature is stable, slowly and evenly add 1.5 g of anhydrous citric acid, and stir for 5 hours. When the reaction is over, stop the nitrogen Pass into, cool to room temperature, obtain the crude product of yellow fluorescent powder;
[0061] 2) Use a high-speed centrifuge device, at a speed of 10000r / min, centrifuge for 20 minutes to clean, and repeat the cleaning steps with acetone and absolute ethanol until the solution is milky white;
[0062] 3) Use a vacuum rotary evaporator with a rotary evaporation temperature of 70°C to evaporate acetone and absolute ethanol to obtain a white powder;
[0063] 4) Dissolving the white powder in chloroform, standing still for 8 hours, distilling off th...
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