阅读说明：本技术 浸润性可调的石墨烯光子晶体薄膜的制备方法 (Preparation method of wettability-adjustable graphene photonic crystal film ) 是由 陈亮 刘慈慧 齐珊珊 于 2020-04-28 设计创作，主要内容包括：本发明公开了一种浸润性可调的石墨烯光子晶体薄膜的制备方法,包括以下步骤：S1：使用单分散性纳米粒子制备蛋白石型光子晶体薄膜；S2：将含有石墨烯的聚合物前驱体溶液均匀的渗入所述蛋白石型光子晶体薄膜的孔隙中,聚合后,除去其中的蛋白石型光子晶体结构,得到有序的反蛋白石型石墨烯光子晶体薄膜；S3：向所述反蛋白石型石墨烯光子晶体薄膜的表面滴加浸润液体使其完全浸润,形成液体涂层,得浸润性可调的石墨烯光子晶体薄膜。向该石墨烯光子晶体薄膜施加电响应,该薄膜的浸润性即可以人为调控。(The invention discloses a preparation method of a graphene photonic crystal film with adjustable wettability, which comprises the following steps: s1: preparing an opal type photonic crystal film using the monodisperse nanoparticles; s2: uniformly permeating a polymer precursor solution containing graphene into the pores of the opal type photonic crystal film, and removing the opal type photonic crystal structure after polymerization to obtain an ordered inverse opal type graphene photonic crystal film; s3: and dripping infiltration liquid on the surface of the inverse opal type graphene photonic crystal film to enable the surface to be completely infiltrated to form a liquid coating, so as to obtain the graphene photonic crystal film with adjustable infiltration. And applying an electric response to the graphene photonic crystal film, wherein the wettability of the film can be artificially regulated and controlled.)

1. A preparation method of a graphene photonic crystal film with adjustable wettability is characterized by comprising the following steps:

s1: preparing an opal type photonic crystal film using the monodisperse nanoparticles;

s2: uniformly permeating a polymer precursor solution containing graphene into the pores of the opal type photonic crystal film, and removing the opal type photonic crystal structure after polymerization to obtain an ordered inverse opal type graphene photonic crystal film;

s3: and dripping infiltration liquid on the surface of the inverse opal type graphene photonic crystal film to enable the surface to be completely infiltrated to form a liquid coating, so as to obtain the graphene photonic crystal film with adjustable infiltration.

2. The method for preparing the graphene photonic crystal film with the adjustable wettability according to claim 1, wherein the concentration of the polymer precursor solution containing graphene is 0.9-3 mg/ml.

3. The method of claim 1, wherein in step S1, the opal-type photonic crystal film is prepared by a vertical deposition method, a doctor blading method, a spin coating method, a czochralski method, a vapor deposition method, or an electrodeposition method.

4. The method for preparing the graphene photonic crystal film with adjustable wettability according to claim 1, wherein in the step S1, the monodisperse nanoparticles are any one or a combination of the following:

metal oxides, inorganic salts, polyelectrolytes, block polymers, copolymers, liquid crystal materials, mesoporous nanoparticles, gold or silver.

5. The method for preparing the wettability-adjustable graphene photonic crystal film according to any one of claims 1 to 3, wherein the diameter of the monodisperse nanoparticles is 200 nm to 400nm, and the concentration of the monodisperse nanoparticles is 0.1g/ml to 0.3 g/ml.

6. The method for preparing the graphene photonic crystal film with the adjustable wettability according to any one of claims 1 to 3, wherein the thickness of the opal type photonic crystal film is 400nm to 400 μm.

7. The method for preparing the graphene photonic crystal film with the adjustable wettability according to any one of claims 1 to 6, wherein the polymer precursor solution may be methyl methacrylate, polyhydroxyethyl methacrylate, cellulose acetate butyrate, siloxane methacrylate, fluorosilicone methacrylate, perfluoroether, N-vinyl pyrrolidone, polyvinyl alcohol, glycidyl methacrylate, ethylene glycol dimethacrylate, polydimethylsiloxane and polyurethane.

8. The method for preparing the graphene photonic crystal film with the adjustable wettability of any one of claims 1 to 6, wherein in the step S2, the polymerization method is thermal polymerization or ultraviolet polymerization.

9. The method for preparing the wettability-adjustable graphene photonic crystal film according to any one of claims 1 to 6, wherein in the step S2, the opal type photonic crystal structure is removed by an acid etching method, an alkali etching method or a thermal burning-out method.

10. The method for preparing the graphene photonic crystal film with the adjustable wettability according to any one of claims 1 to 6, wherein in the step S3, the wetting liquid is fluorinated silicone oil, ethanol or ultrapure water.

Technical Field

The invention relates to the technical field of photonic crystal preparation, in particular to a preparation method of a graphene photonic crystal film with adjustable wettability.

Background

The life in nature has the history of hundreds of millions of years of evolution, the perpetual subject of new material development is to natural learning, the integration of microcosmic and macroscopic is inspired from organisms, one aspect of specific functions of organisms is simulated, the design and preparation of new materials are realized, and the new concept of natural learning is realized. For example, the agility can be obtained from the plant in nature, namely the pitcher plant, and the pitcher plant has the characteristics that the pitcher plant has the capability of continuously carrying objects, and the objects are enabled to be wet and slippery and cannot slide off. The peculiar directional liquid conveying phenomenon is due to the unique micro-nano structure of the surface.

The three-dimensional inverse opal type graphene photonic crystal film is composed of a layered ordered hexagonal structure and is prepared by copying an opal type graphene photonic crystal template. Such a three-dimensional inverse opal type photonic crystal structure exists in nature, however, the work of manually preparing an inverse opal type graphene photonic crystal structure rarely involves a layer of adjusting wettability by applying an electrical response, and the work of manually adjusting wettability of a graphene photonic crystal film by applying an electrical response is still blank.

Disclosure of Invention

The purpose of the invention is as follows: aiming at the problems in the prior art, the invention provides a preparation method of a graphene photonic crystal film with adjustable wettability,

the technical scheme is as follows: the invention provides a preparation method of a graphene photonic crystal film with adjustable wettability, which is characterized by comprising the following steps: s1: preparing an opal type photonic crystal film using the monodisperse nanoparticles; s2: uniformly permeating a polymer precursor solution containing graphene into the pores of the opal type photonic crystal film, and removing the opal type photonic crystal structure after polymerization to obtain an ordered inverse opal type graphene photonic crystal film; s3: and dripping infiltration liquid on the surface of the inverse opal type graphene photonic crystal film to enable the surface to be completely infiltrated to form a liquid coating, so as to obtain the graphene photonic crystal film with adjustable infiltration.

Preferably, the concentration of the polymer precursor solution containing graphene is 0.9-3 mg/ml.

Preferably, in S1, the opal-type photonic crystal thin film is prepared by a vertical deposition method, a doctor blade method, a spin coating method, a czochralski method, a vapor deposition method, or an electrodeposition method.

Preferably, in the S1, the monodisperse nanoparticles are any one or a combination of the following: metal oxides, inorganic salts, polyelectrolytes, block polymers, copolymers, liquid crystal materials, mesoporous nanoparticles, gold or silver.

Preferably, the diameter of the monodisperse nano particle is 200 nm-400 nm, and the concentration is 0.1 g/ml-0.3 g/ml.

Preferably, the thickness of the opal type photonic crystal thin film is 400 nm-400 mu m.

Preferably, the polymer precursor solution may be methyl methacrylate, polyhydroxyethyl methacrylate, cellulose acetate butyrate, silicone methacrylate, fluorosilicone methacrylate, perfluoroether, N-vinyl pyrrolidone, polyvinyl alcohol, glycidyl methacrylate, ethylene glycol dimethacrylate, polydimethylsiloxane and polyurethane.

Preferably, in S2, the polymerization method is thermal polymerization or ultraviolet polymerization.

Preferably, in the S2, the opal-type photonic crystal structure is removed by acid etching, alkali etching, or thermal burning-out.

Preferably, in S3, the immersion liquid is silicone oil, ethanol or ultrapure water.

Has the advantages that: the preparation method comprises the steps of firstly preparing a three-dimensional opal type photonic crystal film by using monodisperse nanoparticles, then uniformly permeating a polymer precursor solution containing graphene into pores of the opal type photonic crystal film, removing an opal type photonic crystal structure by a sacrificial template method after polymerization to obtain an ordered inverse opal type graphene photonic crystal film, infiltrating the film by using a proper infiltration liquid, and forming a liquid coating on the surface of the film to obtain the graphene photonic crystal film with adjustable infiltration.

The graphene photonic crystal film with adjustable wettability prepared by the invention is a novel wet and smooth film with adjustable wettability based on shape memory graphene sponge. The conductivity of the graphene photonic crystal film enables the graphene photonic crystal film to have the characteristic of rapidly recovering shape memory, and when the shape memory graphene film is formed, liquid drops can be pinned and rebound due to electrical response, so that exposure of a rough surface is caused. When the graphene photonic crystal film is subjected to electric response, nano holes of a photonic crystal structure in the graphene photonic crystal film become large or small, and the surface of the film becomes rough or smooth, so that the continuous liquid level deforms, the wettability of the graphene photonic crystal film can be controlled rapidly and perfectly, and good mechanical properties are realized. The electric heating effect changes the charge density and the electrostatic force between the water and the surface of the film, thereby ensuring that the film has wettability.

Drawings

Fig. 1 is a schematic structural diagram of a graphene photonic crystal film with adjustable wettability according to the present invention.

Detailed Description

The present invention will be described in detail with reference to the following embodiments.