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A method for improving the solubility of two-dimensional material black phosphorus

A two-dimensional material and solubility technology, applied in chemical instruments and methods, phosphorus, phosphorus compounds, etc., can solve the problems that restrict black phosphorus research and industrial application, difficult solution processing, low solubility, etc., to improve atmospheric stability , Improve solution processing performance, increase solubility

Active Publication Date: 2021-11-09
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, black phosphorus also has defects. The solubility of black phosphorus in common organic solvents is very low, and it is difficult to realize solution processing. Research and Industrial Application of Black Phosphorus

Method used

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  • A method for improving the solubility of two-dimensional material black phosphorus
  • A method for improving the solubility of two-dimensional material black phosphorus
  • A method for improving the solubility of two-dimensional material black phosphorus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In an inert gas glove box, 10 mg of black phosphorus and 25.9 mg of sodium methoxide (molar ratio 1:1.5) were added to 10 mL of DMF solvent, and the reaction was stirred at room temperature at 300 rpm / min for 48 h. Then centrifuge at 2000rpm for 30min to remove unreacted black phosphorus, then centrifuge at 12000rpm for 90min, pour off the supernatant, collect the solid precipitate in the lower layer, and dry under reduced pressure to obtain methoxy-modified blackphosphorus.

[0024] The UV-Vis absorption spectra of black phosphorus in methanol before and after modification are as follows: figure 1 As shown, compared with the reference black phosphorus solution, the absorption value of the modified black phosphorus in the solution has been significantly improved, indicating that the solubility of black phosphorus has increased.

[0025] Infrared spectra of black phosphorus before and after modification figure 2 As shown, it can be seen that 1066cm -1 It shows that th...

Embodiment 2

[0031] Different from Example 1, in an inert gas glove box, 10 mg of black phosphorus and 17.3 mg of sodium methylate (molar ratio of 1:1) were added to 10 mL of DMF solvent, and the reaction was stirred at a speed of 500 rpm / min for 36 h at room temperature .

[0032] Infrared spectra showed the generation of C-O-P bonds, indicating that the side chains of alkoxy groups were introduced on the surface of black phosphorus.

Embodiment 3

[0034] The difference from Example 1 is that in an inert gas glove box, 10 mg of black phosphorus and 34.6 mg of sodium methylate (1:2 in molar ratio) were added to 10 mL of DMF solvent, and the reaction was stirred at a speed of 200 rpm / min for 72 h at room temperature .

[0035] Infrared spectra showed the generation of C-O-P bonds, indicating that the side chains of alkoxy groups were introduced on the surface of black phosphorus.

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Abstract

The invention discloses a method for improving the solubility of black phosphorus, a two-dimensional material, through chemical reaction between sodium alkylate and black phosphorus to generate C-O-P bonds, and introducing soluble alkoxyl side chains on the surface or edge of black phosphorus , help black phosphorus dissolve in organic solvents, increase the solubility of black phosphorus in organic solvents, thereby improving the solution processing performance of two-dimensional black phosphorus materials. At the same time, the introduced group protects the edge and surface of the black phosphorus material, thereby improving the atmospheric stability of the material. The preparation method of the invention is simple, has strong operability, does not require extreme reaction conditions, and the solubility of the modified black phosphorus in organic solvents is increased, which is beneficial to further solution processing and application of the black phosphorus.

Description

technical field [0001] The invention relates to the technical field of preparation of functional materials, in particular to a method for improving the solubility of black phosphorus, a two-dimensional material. Background technique [0002] Black phosphorus is a new type of two-dimensional semiconductor material with an atomic layer thickness. Because of its unique dimensional characteristics, it has become a very cutting-edge research hotspot. The band gap of black phosphorus can be adjusted with the number of layers, and it has high electron mobility. This unique electrical and optical characteristic makes it have great application potential in the fields of optical communication, energy, and light detection. [0003] However, black phosphorus also has defects. The solubility of black phosphorus in common organic solvents is very low, and it is difficult to realize solution processing. This brings great difficulties to the preparation of functional devices such as optoele...

Claims

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Application Information

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IPC IPC(8): C01B25/00
CPCC01B25/003
Inventor 赵云姜研倪中海
Owner CHINA UNIV OF MINING & TECH
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