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Two-dimensional polymer film and preparation method thereof

A technology for polymer films and substances, applied in the field of two-dimensional polymer films and their preparation, can solve the problems that the size and properties are difficult to meet the practical application, and the transfer of two-dimensional materials is difficult, and the preparation method is simple and economical, and has good solvent resistance. The effect of sex, easy transfer

Active Publication Date: 2022-07-01
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method often requires some harsh conditions, such as high temperature, ultra-high vacuum environment, etc., to promote the reaction.
In addition, the two-dimensional materials obtained by this method have the problem of difficult transfer
Whether it is a "top-down" or "bottom-up" two-dimensional material, it is difficult to meet the needs of practical applications in terms of size and properties.

Method used

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  • Two-dimensional polymer film and preparation method thereof
  • Two-dimensional polymer film and preparation method thereof
  • Two-dimensional polymer film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] A preparation method of a two-dimensional polymer film, comprising the following steps:

[0068] Arrange the aromatic polyamine mixed solution in a weighing bottle with a diameter of 7cm, add the aromatic polyaldehyde mixed solution dropwise to the liquid surface of the aromatic polyamine mixed solution, close the lid of the weighing bottle, and place the lid and the weighing bottle between the A 0.5cm wide filter paper strip is placed between the bottles (the filter paper strip is used to leave some gaps to allow the aromatic organic solvent B to volatilize), and place it in the aromatic polyaldehyde mixed solution at room temperature of 20-25°C After volatilization of the aromatic organic solvent B (the standing time is 24 hours), a two-dimensional polymer film with a thickness of 20 nm is obtained on the liquid surface, wherein,

[0069] The ratio of the amount of the aromatic polyaldehyde in the aromatic polyaldehyde mixed solution to the aromatic polyamine in the a...

Embodiment 2

[0077] A preparation method of a two-dimensional polymer film, comprising the following steps:

[0078] Arrange the aromatic polyamine mixed solution in a weighing bottle with a diameter of 7cm, add the aromatic polyaldehyde mixed solution dropwise to the liquid surface of the aromatic polyamine mixed solution, close the lid of the weighing bottle, and place the lid and the weighing bottle between the A 0.5cm wide filter paper strip is placed between the bottles, and placed at room temperature of 20-25°C until the aromatic organic solvent B in the aromatic polyaldehyde mixed solution has evaporated (the placement time is 36 hours). A two-dimensional polymer film with a thickness of 50 nm was obtained, wherein,

[0079] The ratio of the amount of the aromatic polyaldehyde in the aromatic polyaldehyde mixed solution to the aromatic polyamine in the aromatic polyamine mixed solution is 0.00333:0.01389;

[0080] The configuration method of the aromatic polyamine mixed solution is...

Embodiment 3

[0087] A preparation method of a two-dimensional polymer film, comprising the following steps:

[0088] Arrange the aromatic polyamine mixed solution in a weighing bottle with a diameter of 7cm, add the aromatic polyaldehyde mixed solution dropwise to the liquid surface of the aromatic polyamine mixed solution, close the lid of the weighing bottle, and place the lid and the weighing bottle between the A 0.5cm wide filter paper strip is sandwiched between the bottles, and placed at room temperature of 20-25°C until the aromatic organic solvent B in the aromatic polyaldehyde mixed solution has evaporated (the placement time is 48 hours), and the A two-dimensional polymer film with a thickness of 70 nm was obtained, wherein,

[0089] The ratio of the amount of the aromatic polyaldehyde in the aromatic polyaldehyde mixed solution to the aromatic polyamine in the aromatic polyamine mixed solution is 0.005:0.01389;

[0090] The configuration method of the aromatic polyamine mixed s...

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Abstract

The invention discloses a two-dimensional polymer film and a preparation method thereof, comprising the following steps: dripping an aromatic polyaldehyde mixed solution on the liquid surface of the aromatic polyamine mixed solution, and placing it at room temperature of 20-25 DEG C until the aromatic polyamide After the aromatic organic solvent B in the aldehyde mixed solution is volatilized, a two-dimensional polymer film is obtained on the liquid surface. The invention uses aromatic polyaldehydes and aromatic polyamines as reaction monomers to prepare covalent organic two-dimensional polymer films for the first time, and provides growth conditions for preparing covalent organic two-dimensional polymers. The preparation method is simple and economical, does not require high-end precision instruments, and can obtain a large-area uniform two-dimensional polymer film without providing high energy. actual production needs.

Description

technical field [0001] The invention belongs to the technical field of organic two-dimensional materials, in particular to a two-dimensional polymer film and a preparation method thereof. Background technique [0002] The lateral dimension of two-dimensional materials is larger than 100 nm, or even a few microns or even larger, but the thickness is only a single atom or a few atoms thick (usually less than 5 nanometers). It is a periodic structure with regional repeating units inside. of polymer materials. In 2D materials, electrons are confined to two dimensions, enabling unprecedented physical, electronic and chemical properties. The first two-dimensional material discovered was graphene exfoliated from graphite. As a two-dimensional material with a thickness of one atomic layer, graphene is composed of sp 2 It is composed of a hexagonal honeycomb lattice composed of hybrid carbon atoms, and the large π-conjugated system formed based on this structure has excellent elec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G12/08C08J5/18C08L61/22
CPCC08G12/08C08J5/18C08J2361/22
Inventor 雷圣宾刘洁
Owner TIANJIN UNIV