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A kind of nitrogen-aluminum co-doped carbon dot film laser protection material and its preparation method and application

A laser protection and co-doping technology, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of unfavorable device processing and device work requirements, achieve good transparency and thermal stability, and enhance nonlinear optical performance , the effect of a large nonlinear absorption coefficient

Active Publication Date: 2022-04-01
SHANDONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are few studies on the use of the nonlinear optical properties of carbon dots under pulsed lasers to prepare nonlinear laser protection materials. At the same time, these studies are mainly concentrated in the solution region, which is not conducive to the processing requirements of the device and the working requirements of the device.

Method used

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  • A kind of nitrogen-aluminum co-doped carbon dot film laser protection material and its preparation method and application
  • A kind of nitrogen-aluminum co-doped carbon dot film laser protection material and its preparation method and application
  • A kind of nitrogen-aluminum co-doped carbon dot film laser protection material and its preparation method and application

Examples

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Effect test

Embodiment 1

[0043] A preparation method of nitrogen-aluminum co-doped carbon dot film laser protection material, the preparation route is as follows figure 1 As shown, the steps are as follows:

[0044] (1) Weigh 9.3 grams of dodecylamine and 6.2 grams of anhydrous aluminum trichloride into a 250 ml three-neck flask, then add 50 ml of o-dichlorobenzene, mix well, reflux at 140 ° C for 48 hours, and cool After reaching room temperature, the solvent was purified by n-hexane silica gel column, the raw materials and by-products were removed by ethanol silica gel column purification, the eluent was removed by rotary evaporation, and the hydrophobic carbon dots co-doped with nitrogen and aluminum were obtained after vacuum drying at 50°C for 5 days;

[0045] The solar photos and high-resolution transmission electron microscope of the obtained carbon dots are as follows: figure 2 It can be seen from the figure that the prepared nitrogen-aluminum co-doped hydrophobic carbon dots are in the form...

Embodiment 2

[0055] A preparation method of nitrogen-aluminum co-doped carbon dot film laser protection material, as described in Example 1, the difference is:

[0056] Change the ratio of dodecylamine to anhydrous aluminum chloride to 3:1 (that is, 9.3 grams of dodecylamine and 3.1 grams of anhydrous aluminum chloride); other steps and conditions are consistent with Example 1.

Embodiment 3

[0058] A preparation method of nitrogen-aluminum co-doped carbon dot film laser protection material, as described in Example 1, the difference is:

[0059] Change the ratio of dodecylamine to anhydrous aluminum chloride to 6:1 (that is, 9.3 grams of dodecylamine and 1.5 grams of anhydrous aluminum chloride); other steps and conditions are consistent with those of Example 1.

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Abstract

The invention provides a nitrogen-aluminum co-doped carbon dot film laser protection material, a preparation method and application thereof. In the present invention, mono-substituted alkylamine and anhydrous aluminum trichloride are first added to benzene solvents, fully dispersed and mixed uniformly, refluxed and pyrolyzed at 130-190°C; then cooled to room temperature, separated by silica gel column, and vacuum-dried Hydrophobic carbon dots co-doped with nitrogen and aluminum were obtained. Then dissolve polymethyl methacrylate in dichloromethane, add the dichloromethane dispersion of nitrogen-aluminum co-doped hydrophobic carbon dots, fully disperse and mix to obtain a mixed solution, and then form a film to obtain nitrogen-aluminum co-doped carbon The point film laser protection material; the preparation method of the laser protection material is simple, the dynamic light limiting threshold is low, the nonlinear optical performance is good, and the laser protection effect is good.

Description

technical field [0001] The invention relates to a nitrogen-aluminum co-doped carbon dot film laser protection material and a preparation method and application thereof, belonging to the field of new materials. Background technique [0002] As the application scenarios of laser technology in scientific research, life and industry continue to expand, the potential danger of laser is gradually recognized by people. Because the laser itself has the characteristics of good unidirectionality and high energy, it can cause damage to human eyes and optical sensitive devices in a short period of time, and improper use of high-energy lasers often causes personal injury. In view of the threats posed by lasers in national defense, civil, scientific research, etc., research on new laser protective materials can provide safety protection for workers, scientific researchers and optical sensitive components in expensive optical instruments under the risk of high-intensity laser exposure, ens...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/12C08K3/04C08J5/18C09K11/02C09K11/65
CPCC08J5/18C09K11/65C09K11/025C08J2333/12C08K3/04
Inventor 李洪光路丹丹刘伟刘晓东
Owner SHANDONG UNIV
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