Method for preparing nanomaterial layer on the surface of metal single crystal by toluene self-assembly

Abstract

The invention provides a method for preparing two-dimensional porous nanomaterials based on the self-assembly of tolanylene molecules. The purpose of the present invention is to prepare two-dimensional nanomaterials with a uniform pore structure on the surface of a single crystal by self-assembly of tolanylene molecules under ultra-high vacuum conditions. The method of the present invention: Step 1: Carry out argon ion sputtering on the metal single crystal substrate, then anneal, and repeat the process of sputtering and annealing; Step 2: Place the metal single crystal processed in Step 1 in an ultra-high vacuum preparation chamber , heated to 50°C-53°C, and then the tolan molecules are deposited on the surface of the metal single crystal at room temperature, the deposition time is 3s-5s, and the preparation of the two-dimensional porous nanomaterial is carried out. The method of the present invention has simple process, and Nanomaterials with uniform pore structure can be obtained. The pore size is 3.37nm-3.46nm, the thickness of the pore wall is 0.7nm-1.2nm, the height is 115pm-125pm, and the coverage can reach 18%-30%.

Description

Method for preparing nanomaterial layer on the surface of metal single crystal by self-assembly of diphenylacetylene technical field The present invention relates to the field of nanomaterials, specifically a kind of self-assembly based on diphenylacetylene molecules on a metal single crystal surface. A method for preparing two-dimensional porous nanomaterials. Background technique The construction of two-dimensional porous nanomaterial networks composed of organic molecules on solid surfaces has attracted extensive attention. Note, since its possible applications include gas storage, heterogeneous catalysis, information storage, and sensor devices. They can be molecularly Manufactured by an assembly mechanism, in which the molecule itself finds a specific location and self-assembles through intermolecular interactions to exist stably. Diphenylacetylene is widely used as a structural fragment in organic synthesis and as an organometallic chemistry However, due to...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the prior art cannot prepare two-dimensional porous nanomaterials in an ultra-high vacuum cavity using tolanylacetylene as a precursor molecule, and to provide a method based on the self-assembly of tolanylacetylene molecules on the surface of metal single crystals. A method for two-dimensional porous nanomaterials

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