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W-S-Cu cluster-based metal organic framework crystal material as well as preparation method and application thereof

A technology of metal-organic frameworks and crystal materials, applied in nonlinear optics, optics, instruments, etc., can solve problems such as high optical damage threshold, large nonlinear optical coefficient, complex synthesis, etc.

Active Publication Date: 2021-04-20
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organic molecules and polymer nonlinear optical materials have attracted the attention of scientific researchers because of their large nonlinear optical coefficient, wide light transmission wavelength range, short intrinsic switching time, high optical damage threshold, and good processing performance. However, it has the disadvantages of poor thermal stability and complex synthesis.

Method used

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  • W-S-Cu cluster-based metal organic framework crystal material as well as preparation method and application thereof
  • W-S-Cu cluster-based metal organic framework crystal material as well as preparation method and application thereof
  • W-S-Cu cluster-based metal organic framework crystal material as well as preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Add 0.1mmol ammonium tetrathiotungstate, 0.3mmol cuprous cyanide and 0.3mmol ammonium thiocyanate to 3mL N,N-dimethylformamide solvent and stir to obtain an orange solution;

[0036] (2) Add 0.05mmol 3,5-bis(4-pyridyl)-pyridine into the prepared orange solution and fully stir and dissolve to obtain a reaction solution;

[0037] (3) Filter the prepared reaction solution into a crystallization tube, slowly add 0.2mL N,N-dimethylformamide as a buffer to the upper layer of the filtrate, then add 6ml of acetonitrile as a diffusion layer to the upper layer of the buffer layer and seal it. After crystallization, filtration, washing and drying, the metal-organic framework crystalline material was obtained with a yield of 32%.

[0038] Such as figure 1 Shown is the three-dimensional structure diagram of the metal organic framework crystal material prepared in the present invention. It can be seen from the crystal structure analysis that the pentanuclear cluster [WS 4 Cu ...

Embodiment 2

[0046] (1) Add 0.1mmol ammonium tetrathiotungstate, 0.35mmol cuprous cyanide and 0.35mmol ammonium thiocyanate to 3mL N,N-dimethylformamide solvent and stir to obtain an orange solution;

[0047] (2) Add 0.05mmol 3,5-bis(4-pyridyl)-pyridine into the prepared orange solution and fully stir and dissolve to obtain a reaction solution;

[0048] (3) Filter the prepared reaction solution into a crystallization tube, slowly add 0.2mL N,N-dimethylformamide as a buffer to the upper layer of the filtrate, then add 6ml of acetonitrile as a diffusion layer to the upper layer of the buffer layer and seal it. Crystallization, filtration, washing, and drying give metal-organic framework crystalline materials with a yield of 30%.

Embodiment 3

[0050] (1) Add 0.1mmol ammonium tetrathiotungstate, 0.3mmol cuprous cyanide and 0.3mmol ammonium thiocyanate to 3mL N,N-dimethylformamide solvent and stir to obtain an orange solution;

[0051] (2) Add 0.05mmol 3,5-bis(4-pyridyl)-pyridine into the prepared orange solution and fully stir and dissolve to obtain a reaction solution;

[0052] (3) Filter the prepared reaction solution into a crystallization tube, slowly add 0.5mL N,N-dimethylformamide as a buffer to the upper layer of the filtrate, then add 8ml of acetonitrile as a diffusion layer to the upper layer of the buffer layer and seal it. After crystallization, filtration, washing and drying, the metal-organic framework crystalline material was obtained with a yield of 31%.

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Abstract

The invention discloses a W-S-Cu cluster-based metal organic framework crystal material as well as a preparation method and application thereof. The chemical formula of the metal organic framework crystal material is {[NH4][WS4Cu4 (dpypy)Cu(CN)4].DMF}n, wherein dpypy is 3, 5-bis (4-pyridyl)-pyridine, and the DMF is N, N-dimethyl formamide. The invention also provides a preparation method of the metal organic framework crystal material, ammonium tetrathiotungstate is adopted as a tungsten source and a sulfur source, cuprous cyanide is adopted as a copper source, the tungsten source, the sulfur source, the copper source and 3, 5-bis (4-pyridyl)-pyridine react in an N, N-dimethylformamide solvent, and crystallization is performed to obtain the metal organic framework crystal material. The synthesis method disclosed by the invention is simple, the material yield is high, the purity is high, and the prepared metal organic framework crystal material has strong third-order nonlinear performance.

Description

technical field [0001] The invention belongs to the technical field of metal organic framework materials, and in particular relates to a W-S-Cu cluster-based metal organic framework crystal material, a preparation method and an application thereof. Background technique [0002] At present, nonlinear optical materials have been widely used in optical information processing, optical storage, optical computing, laser instruments, laser medical treatment and other fields. The development of nonlinear optical materials has always been aimed at high nonlinear optical coefficients, fast optical nonlinear response, and good material stability, and has been extensively developed in the fields of inorganic, organic, and inorganic-organic hybrid nonlinear optical materials. And in-depth research. [0003] Inorganic crystals are the earliest nonlinear optical materials studied and have been used in the development of devices. However, inorganic nonlinear optical materials have long res...

Claims

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Application Information

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IPC IPC(8): C08G83/00G02F1/355
Inventor 张金方相前邱晴霞
Owner JIANGNAN UNIV
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