Preparation method of two-dimensional polymer core-shell structure nanowire network coating

Abstract

The invention belongs to the technical field of nano-materials, and particularly relates to a preparation method of a two-dimensional polymer core-shell structure nanowire network coating. The preparation method includes the steps: firstly, forming nanowires in protonated water and good solvent solution by amphiphilic block polymer poly (ethylene glycol)-b-poly (4-vinylpyridine) (or hydrophobic amine polymer) and DNA (deoxyribonucleic acid), performing centrifugal purification and dissolving the nanowires in methanol solution; dropwise adding the nanowire methanol solution to the surface of asubstrate, rapidly spreading the methanol solution to cover the surface, spreading the nanowires in the methanol solution along with the solution and then spinning and volatilizing redundant solutionto form the uniform nanowire network coating. The preparation method of the polymer nanowire network coating is simple and efficient, coatings can be formed on different surfaces, and a new prospect is provided for modification of different surfaces and preparation of composite two-dimensional materials.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a preparation method of a nanowire network coating with a two-dimensional polymer core-shell structure. Background technique [0002] In nature, the surface of organisms is very important to their survival, for example: chameleons change color according to the environment to adapt to the environment to protect themselves; the epidermis of plants protects their internal tissue structures, etc. Similarly, the surface performance of artificially processed materials is also very important, which affects the appearance and use of materials. For example: spraying paint on the surface of furniture can not only maintain the appearance, but also protect the internal materials of the furniture; the stealth of fighter jets comes from its stealth paint. The coating can weaken the reflection of radar, etc. Therefore, it is very important to modify the surface of the ma...

AI Technical Summary

Problems solved by technology

Inspired by the sticky protein structure in shells in nature, using the self-aggregation of dopamine molecules with similar structures, different surfaces can be soaked in dopamine solutions. Under alkaline conditions, different surfaces can be coated with a layer of polydopamine. The surface Can be: inert metals, oxides, polymers, semiconductor ceramics, etc. (Science, 2007, 318, 426-430), but this coating is a void-free polymer coating, and the density of polydopamine coating cannot be adjusted

By coating silver nanowires on the surface, conductive and transparent composite materials can be obtained, but the preparation of metal nanowires is relatively difficult, the flexibility is relatively poor, and the solubility is poor, which is not conducive to the preparation of single-layer coating, and the uniformity of coating Also poor (J. Am. Chem.Soc. 2017, 139, 9921-9926; small 2015, 11, 306–3)

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