Full-color room-temperature phosphorescent carbon dots under visible light excitation and composition thereof
A room temperature phosphorescence and visible light technology, applied in luminescent materials, identification devices, instruments, etc., to achieve high application value, strong penetration, and the effect of promoting transformation
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[0037] Overall implementation:
[0038] A full-color room-temperature phosphorescent carbon dot under the excitation of visible light is compounded by a primary color carbon dot and a polyacrylamide, and the mass ratio of the primary color carbon dot to the polyacrylamide is 1:10-1500. The primary color carbon dots are used as the main body, polyacrylamide is used as the composite matrix, and the primary color carbon dots are uniformly dispersed in the polyacrylamide polymer matrix.
[0039] The primary color carbon dots are selected from one of blue carbon dots, green carbon dots, yellow carbon dots, and red carbon dots; the synthetic raw materials of the blue carbon dots are resorcinol and sodium hydroxide; the synthesis of the green carbon dots The raw materials are m-phenylenediamine and disodium EDTA; the synthetic raw materials of yellow carbon dots are m-phenylenediamine and glucose; the synthetic raw materials of red carbon dots are biomass pomegranate peel and potassi...
Example Embodiment
[0045] Example 1
[0046] This embodiment provides a method for preparing a blue phosphorescent material in a full-color room temperature phosphorescent carbon dot excited by visible light, which includes the following steps:
[0047] (1) Dissolve 0.05g of resorcinol in sodium hydroxide solution (7.5mL, 10mol / L) to obtain a mixed solution;
[0048] (2) placing the mixed solution obtained in step (1) in a 25 mL polytetrafluoroethylene autoclave, and heating at 140 ° C for 12 hours to obtain the initial solution of carbon dots;
[0049] (3) Add 10 mL of distilled water to the initial solution obtained in step (2), sonicate for 15 minutes, filter the solution to remove insoluble matter, spin the obtained solution at 3000 rpm, centrifuge for 15 minutes, wash with water 3 times, and take the upper layer solution, The upper layer solution was dialyzed for 24 hours and freeze-dried for 36 hours to obtain carbon dot powder;
[0050] (4) Dissolve 1 mg of the carbon dot powder obtaine...
Example Embodiment
[0052] Example 2
[0053] This embodiment provides a method for preparing a green phosphorescent material in a full-color room temperature phosphorescent carbon dot excited by visible light, which includes the following steps:
[0054] (1) Dissolve 0.05g m-phenylenediamine and 0.1g disodium EDTA in 7.5mL ultrapure water to obtain a mixed solution;
[0055] (2) placing the mixed solution obtained in step (1) in a 25 mL polytetrafluoroethylene autoclave, and heating at 140 ° C for 12 hours to obtain the initial solution of carbon dots;
[0056] (3) Add 10 mL of distilled water to the initial solution obtained in step (2), sonicate for 15 minutes, filter the solution to remove insoluble matter, spin the obtained solution at 3000 rpm, centrifuge for 15 minutes, wash with water 3 times, and take the upper layer solution, The upper layer solution was dialyzed for 24 hours and freeze-dried for 36 hours to obtain carbon dot powder;
[0057] (4) Dissolve 1 mg of the carbon dot powder...
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