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Method for constructing metal organic frame film on graphite base

A metal-organic framework, graphite-based technology, applied in electrical components, semiconductor/solid-state device manufacturing, circuits, etc., can solve the problems of difficulty in guarantee, complicated operation, difficult preparation, etc., and achieves low cost, uniform film formation, and acceptable crystal form. tuning effect

Inactive Publication Date: 2016-08-03
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These preparation methods generally require special instruments and equipment, complex operations, high energy consumption, difficulty in ensuring few defects, and difficulty in preparing monolayer films.

Method used

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  • Method for constructing metal organic frame film on graphite base
  • Method for constructing metal organic frame film on graphite base
  • Method for constructing metal organic frame film on graphite base

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Dissolve 0.72mg of 4,4’-tetracosyl-2,2’-bipyridine in 20mL of organic solvent-phenyloctane, ultrasonically vibrate for 5 minutes, and prepare a concentration of 1×10 -4 Mixed solution of M;

[0023] Take highly oriented pyrolysis graphite with a size of 5 mm × 5 mm, peel off the surface layer with scotch tape, drop 0.8 μL of the obtained mixed solution on the graphite substrate, and let it stand at room temperature for 5 minutes at 25 ° C until the self-assembly process is fully completed. A 4,4'-tetradecyl-2,2'-bipyridyl thin film with a single crystal structure I was obtained on a graphite substrate ( figure 1 ).

Embodiment 2

[0025] a. Dissolve 0.72mg of 4,4’-tetracosyl-2,2’-bipyridine in 20mL organic solvent-phenyloctane, oscillate ultrasonically for 5 minutes, and prepare a concentration of 1×10 -4 Mixed solution of M;

[0026] b. Dissolve 0.44mg of zinc acetate in 20mL of organic solvent ethanol, ultrasonically vibrate for 5 minutes, and prepare a concentration of 1×10 -4 M's zinc acetate ethanol solution;

[0027] c. Then take 10mL of zinc acetate ethanol solution and add it into 10mL of phenyloctane to prepare a concentration of 5×10 -5 M's zinc acetate solution;

[0028] d. Take highly oriented pyrolysis graphite with a size of 5mm×5mm, peel off the surface layer with scotch tape, drop 0.8 μL of the 4,4'-tetradecyl-2,2'-bipyridine solution in step a on the graphite 4,4'-tetradecyl-2,2'- bipyridyl film;

[0029] e. Add 0.8 μL of the zinc acetate solution prepared in step c dropwise on the 4,4'-tetradecyl-2,2'-bipyridine film in situ to obtain a single crystal structure on the graphite sub...

Embodiment 3

[0031] a. Dissolve 0.72mg of 4,4’-tetracosyl-2,2’-bipyridine in 20mL organic solvent-phenyloctane, oscillate ultrasonically for 5 minutes, and prepare a concentration of 1×10 -4 Mixed solution of M;

[0032] b. Dissolve 0.44mg of copper acetate in 20mL of organic solvent ethanol, ultrasonically vibrate for 5 minutes, and prepare a concentration of 1×10 -4 Mixed solution of M,

[0033] c. Take 10mL of copper acetate ethanol solution and add it to 10mL of phenyloctane to make a concentration of 5×10 -5 Copper acetate solution of M;

[0034] d. Take highly oriented pyrolysis graphite with a size of 5mm×5mm, peel off the surface layer with scotch tape, drop 0.8 μL of the 4,4'-tetradecyl-2,2'-bipyridine solution in step a on the graphite After the self-assembly process is fully completed, the 4,4'-tetradecyl-2,2'- bipyridyl film;

[0035] e. Drop 0.8 μL of the prepared copper acetate solution in step c on the 4,4'-tetradecyl-2,2'-bipyridine film in situ to obtain a single crysta...

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Abstract

The invention relates to a method for constructing a metal organic frame film on a graphite substrate. According to the method, 4,4'-tetracosyl-2,2'-bipyridine is adopted to form a self-assembly film of a crystal structure I on a graphite base through a molecule self-assembly method; and with a zinc acetate solution and a copper acetate solution adopted, a metal organic frame film of a crystal structure II or a metal organic frame film of a crystal structure III can be obtained through adopting an in-situ dropwise adding method. The concentration of the 4,4'-tetracosyl-2,2'-bipyridine solution is low; the highly-oriented pyrolytic graphite is formed by stacking graphene layers, and the surface of the highly-oriented pyrolytic graphite is flat; a transparent adhesive tape can be pressed on the surface layer of the highly-oriented pyrolytic graphite, and then the surface layer can be peeled off, so that a clean graphite surface can be obtained, and therefore, the film can be cleaned easily and can be repeatedly used; temperature condition is mild; and the crystal structure of the metal organic frame film can be adjusted according to demands. The graphite based metal organic frame film prepared by using the method has the advantages of uniform film formation, few defects and simple operation, and can be applied to fields such as photoelectric molecular sensors.

Description

technical field [0001] The invention belongs to the field of preparation of organic semiconductor thin films, and in particular relates to a method for constructing a metal organic framework thin film on a graphite substrate. Background technique [0002] Bipyridine-based metal-organic framework films have good thermal stability, solid fluorescence properties, and high photoconductivity, and can be widely used in photocatalysis, electronic fluorescent devices, electrochemical sensors, solar cells, and DNA repair and other fields. Large-sized bipyridine metal-organic framework crystals are difficult to construct, so the main research is focused on its thin film applications. A monolayer film with almost no defects and uniform film quality is particularly beneficial to improve the photoelectric performance of the film, and can effectively reduce the self-recombination of photogenerated carriers generated inside the film. The photogenerated carrier yield is also related to the...

Claims

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Application Information

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IPC IPC(8): H01L21/02
CPCH01L21/02112H01L21/02225
Inventor 王富王传义王熠
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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