Metal-free phthalocyanine-graphene nonlinear optical composite material as well as preparation method and application thereof

A technology of nonlinear optics and composite materials, applied in the field of metal-free phthalocyanine-graphene nonlinear optical composite materials and their preparation, can solve the problems of low damage threshold, long response time, poor third-order nonlinear optical performance, etc. Achieve the effects of stable performance, simple preparation method and good third-order nonlinear optical performance

Inactive Publication Date: 2020-12-15
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of this, the purpose of the present invention is to solve the problems of low linear transmittance of laser protection materials in the prior art, narrow protection band, poor solubility, low damage threshold, long response

Method used

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  • Metal-free phthalocyanine-graphene nonlinear optical composite material as well as preparation method and application thereof
  • Metal-free phthalocyanine-graphene nonlinear optical composite material as well as preparation method and application thereof
  • Metal-free phthalocyanine-graphene nonlinear optical composite material as well as preparation method and application thereof

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preparation example Construction

[0037] The present invention also provides a method for preparing the metal-free phthalocyanine-graphene nonlinear optical composite material, wherein phthalocyanine and graphene are non-covalently combined to obtain the metal-free phthalocyanine-graphene nonlinear optical composite material. Specifically, the following steps may be included:

[0038] Step 1, adding phthalocyanine, graphene and concentrated sulfuric acid into the reactor, stirring in a water bath at 40-80°C for 20-30 hours to obtain a liquid-solid mixture, the mass ratio of phthalocyanine and graphene is 1:1;

[0039] Step 2. After cooling the liquid-solid mixture obtained in Step 1 to room temperature, add dropwise to ice water, stir at room temperature for 0.5-1.5 h to quench, and obtain a crude product;

[0040] Step 3: filter the crude product under reduced pressure, wash with deionized water until neutral, then wash with ethanol, and dry to obtain a metal-free phthalocyanine-graphene nonlinear optical compo...

Embodiment 1

[0049] Step 1: Add 200 mg of phthalocyanine, 200 mg of physical double-layer graphene (PGN2) and 30 ml of concentrated sulfuric acid into the reactor, and stir in a water bath at 60° C. for 24 hours to obtain a liquid-solid mixture.

[0050] Step 2. Cool the liquid-solid mixture prepared in Step 1 to room temperature, drop it into a beaker containing 50 ml of ice water at a rate of 1 drop per second, and stir at room temperature for 1 h to obtain a crude product.

[0051] Step 3: filter the crude product under reduced pressure, wash it with deionized water until neutral, then wash it with ethanol, and dry it in an oven at 50°C for 12 hours to obtain a metal-free phthalocyanine-graphene nonlinear optical composite material.

Embodiment 2

[0053] Step 1: Add 200 mg of phthalocyanine, 200 mg of physical four-layer graphene (PGN4) and 30 ml of concentrated sulfuric acid into the reactor, and stir in a water bath at 60° C. for 24 hours to obtain a liquid-solid mixture.

[0054] Step 2. Cool the liquid-solid mixture prepared in Step 1 to room temperature, drop it into a beaker containing 50 ml of ice water at a rate of 1 drop per second, and stir at room temperature for 1 h to obtain a crude product.

[0055] Step 3: filter the crude product under reduced pressure, wash it with deionized water until neutral, then wash it with ethanol, and dry it in an oven at 50°C for 12 hours to obtain a metal-free phthalocyanine-graphene nonlinear optical composite material.

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Abstract

The invention relates to a metal-free phthalocyanine graphene nonlinear optical composite material as well as a preparation method and application thereof, and belongs to the technical field of nonlinear optical composite materials. The problems that a laser protection material in the prior art is low in linear transmittance, narrow in protection band, poor in solubility, low in damage threshold,long in response time and the like, and the third-order nonlinear optical performance of a nonlinear optical material is poor are solved. The nonlinear optical composite material provided by the invention is prepared by non-covalent binding of phthalocyanine and graphene. The nonlinear optical composite material is stable in performance, has good three-order nonlinear optical performance, can be used as an optical amplitude limiting material, and is simple in preparation method and free of pollution.

Description

technical field [0001] The invention belongs to the technical field of nonlinear optical composite materials, in particular to a metal-free phthalocyanine-graphene nonlinear optical composite material and its preparation method and application. Background technique [0002] With the development of lasers, the laser radiation effect shows that various high-power or high-peak-power lasers can cause interference or damage to the detector, and can also cause a certain degree of dazzling or blinding effects on the human eye, which may threaten Optoelectronic equipment and human eye safety. For laser protection, the optical limiting material design based on the principle of nonlinear optics should be designed, and the most ideal design is a nonlinear optical composite material with multiple optical limiting mechanisms. [0003] Phthalocyanine is an organic compound with 18 highly delocalized π-electron conjugated structures, which exhibit unique nonlinear optical properties, with...

Claims

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Application Information

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IPC IPC(8): G02F1/35G02F1/355G02F1/361C01B32/184C07D487/22
CPCC07D487/22C01B32/184G02F1/3534G02F1/355G02F1/3612
Inventor 王挺峰汤伟孙涛
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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