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Functionalized graphene oxide-phthalocyanine nonlinear optical composite material as well as preparation method and application thereof

A nonlinear optics and composite material technology, which is applied in the field of functionalized graphene oxide-phthalocyanine nonlinear optical composite materials and its preparation, can solve the problems of easy aggregation, difficult separation and recovery, easy to dissolve in water, etc., and achieves the preparation method. simple effect

Inactive Publication Date: 2020-12-29
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

CN109529931A provides a graphene oxide covalently immobilized metal phthalocyanine catalyst and its preparation method and application in order to solve the defects of phthalocyanine and polyoxometalate as photocatalysts that are easy to aggregate, easily soluble in water, and difficult to separate and recycle. , broaden the photoresponse range and improve the photocatalytic activity
However, compared with metal-free phthalocyanine, the aggregation effect of graphene oxide in organic solvents is a greater difficulty

Method used

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  • Functionalized graphene oxide-phthalocyanine nonlinear optical composite material as well as preparation method and application thereof
  • Functionalized graphene oxide-phthalocyanine nonlinear optical composite material as well as preparation method and application thereof
  • Functionalized graphene oxide-phthalocyanine nonlinear optical composite material as well as preparation method and application thereof

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preparation example Construction

[0048] The preparation method of graphene oxide-phthalocyanine nonlinear optical composite material of the present invention comprises the following steps:

[0049] Step 1, dissolving phthalocyanine in concentrated sulfuric acid and stirring until uniformly dispersed to obtain a phthalocyanine solution;

[0050] Step 2. Add functionalized graphene oxide to the phthalocyanine solution and stir at 50-70°C for more than 8 hours, usually 24 hours. Add the obtained reaction solution to the ice-water mixture, continue to stir for 2-3 hours to quench, and obtain phthalocyanine- Functionalized graphene oxide sol;

[0051] Step 3: Suction-filter the phthalocyanine-functionalized graphene oxide sol, wash and filter with water several times, wash and filter with ethanol, and dry in a blast drying oven to obtain the functionalized graphene oxide-phthalocyanine nonlinear optical composite material.

[0052] In the above technical solution, in step 1, the stirring speed is 200-600 rpm, th...

Embodiment 1

[0060] Step 1. Weigh 400 mg of phthalocyanine, add 20 mL of concentrated sulfuric acid to dissolve, stir at 200 rpm for 10 min at room temperature, the black suspension gradually turns into a dark brown solution, and obtain a phthalocyanine solution.

[0061] Step 2: Add 400 mg of asymmetric functionalized graphene oxide with the structure of formula I into the phthalocyanine solution in three to five batches. After the addition, keep the reaction solution at 60°C and 500 rpm for 24 hours, and then divide the reaction solution into three to five batches. Five batches were added to a beaker filled with 50mL ice water, and stirred at 500rpm for 2h to obtain a phthalocyanine-functionalized graphene oxide sol;

[0062] Step 3: Suction-filter the phthalocyanine-functionalized graphene oxide sol, wash with water and ethanol for several times, and dry in a blast drying oven at 50°C to obtain a 165 mg black fluffy porous particle powder sample , that is, asymmetrically functionalized ...

Embodiment 2

[0064] The mass ratio of asymmetric functionalized graphene oxide to phthalocyanine in Example 1 was replaced by 1:2, and the others were the same as in Example 1.

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Abstract

The invention relates to a functionalized graphene oxide phthalocyanine nonlinear optical composite material as well as a preparation method and application thereof, belongs to the technical field ofnonlinear optical composite materials, overcomes the defects in the prior art, and obtains a functional material for effective optical limiting laser protection. The nonlinear optical composite material is formed by bonding phthalocyanine and functionalized graphene oxide, and the functionalized graphene oxide is one of asymmetric functionalized graphene oxide and symmetric functionalized grapheneoxide. The non-linear optical composite material forms an electron donor receptor system, is beneficial to rapid transfer of electrons, enables phthalocyanine and graphene oxide to have a synergisticeffect to show excellent three-order non-linear optical performance and stable performance, reduces the aggregation effect in an organic solvent, can be used as an optical limiting material, and is especially suitable for laser device protection.

Description

technical field [0001] The invention belongs to the technical field of nonlinear optical composite materials, and in particular relates to a functionalized graphene oxide-phthalocyanine nonlinear optical composite material and its preparation method and application. Background technique [0002] Human eyes and photoelectric sensors are vulnerable to temporary or permanent damage caused by laser beams, so it is necessary to develop effective laser protection devices. Designing nonlinear optical composite materials with multiple optical limiting mechanisms can maximize strengths and circumvent weaknesses, and solve the problem of singleness. [0003] Graphene-based materials are among the most promising in catalysis, electronics, solar energy conversion and nonlinear optics. Graphene oxide has strong nonlinear absorption and strong light confinement properties due to the π-π stacking effect; oxygen-containing functional groups and defect structures improve its hydrophilicity,...

Claims

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Application Information

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IPC IPC(8): C07D303/46C07D487/22G02F1/355G02F1/361
CPCC07D303/46C07D487/22G02F1/3612G02F1/3611G02F1/355C07B2200/11
Inventor 王挺峰汤伟孙涛
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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