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A kind of porphyrin covalently linked molybdenum disulfide nonlinear nano-hybrid material and its preparation and application

A nano-hybrid material, molybdenum disulfide technology, applied in the direction of nonlinear optics, organic chemistry, zinc organic compounds, etc., can solve the problems of small effect and poor stability, achieve enhanced dispersion and stability, and not easy to reproduce Gathering effect

Active Publication Date: 2022-05-17
TONGJI UNIV
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  • Application Information

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Problems solved by technology

[0010] However, in the above methods, the interaction between the physically doped doping system and molybdenum disulfide is relatively small, and the stability is not good; the sulfur vacancy filling and dithiolane ring opening methods are basically based on molybdenum disulfide Sulfur vacancies, edges of nanosheets and other highly reactive defects

Method used

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  • A kind of porphyrin covalently linked molybdenum disulfide nonlinear nano-hybrid material and its preparation and application
  • A kind of porphyrin covalently linked molybdenum disulfide nonlinear nano-hybrid material and its preparation and application
  • A kind of porphyrin covalently linked molybdenum disulfide nonlinear nano-hybrid material and its preparation and application

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Embodiment 1

[0044] see figure 1 and figure 2 As shown, this example provides a method for preparing a porphyrin covalently linked molybdenum disulfide nonlinear nano-hybrid material:

[0045] first step:

[0046] Add 1.3 g of dry MoS to a 50 mL schlenk bottle 2 , at N 2Add 10 mL of n-butyllithium at ambient. After sonicating for 2 h, stir for 2 days. After standing for 30 min, the supernatant was removed, and then 20 mL of ultrapure water was added to quench the residual n-butyllithium. Add an equal volume of ethanol and sonicate for 30 min. Centrifuge at 12,000 rpm for 20 min with a centrifuge to collect the precipitate. The resulting precipitate was redistributed into ethanol, and the above operation was repeated to wash away the organic matter. Then the precipitate was dispersed in ultrapure water and centrifuged at 4000rpm for 30min to remove unstripped MoS 2 . The supernatant was taken, centrifuged at a high speed of 12000rpm for 20min, and the precipitate was collected. ...

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Abstract

The invention relates to a porphyrin covalently linked molybdenum disulfide non-linear nano-hybrid material and its preparation and application. By coordinating zinc porphyrin axially to the surface of layered molybdenum disulfide, through the relationship between porphyrin and molybdenum disulfide Energy transfer between organic-inorganic hybrid materials enhances the nonlinear performance. In the present invention, molybdenum disulfide is first stripped into few layers by butyllithium, p-aminopyridine is covalently connected to the surface of layered molybdenum disulfide through diazonium salt reaction, and then the porphyrin with metal zinc coordinated in the center is passed through Axially coordinated to the p-aminopyridine-modified molybdenum disulfide surface to obtain a porphyrin-molybdenum disulfide hybrid material, the covalent linkage enhances the energy transfer between molybdenum disulfide and porphyrin, so the hybrid material Exhibits enhanced nonlinear optical properties at nanosecond 532nm.

Description

technical field [0001] The invention belongs to the technical field of organic-inorganic functional composite materials, and relates to a non-linear nano-hybrid material covalently linked by porphyrin to molybdenum disulfide and its preparation and application. Background technique [0002] Molybdenum disulfide, as a member of transition metal dichalcogenides, has an interlayer structure of S-Mo-S. Molybdenum disulfide layers are connected by strong chemical bonds, while the interlayers are only connected by van der Waals force, so it is possible to peel off bulk molybdenum disulfide into few layers or even a single layer. Due to the quantum confinement effect, as the number of molybdenum disulfide layers changes, its band gap also changes. Liquid phase exfoliation of molybdenum disulfide is a relatively convenient method, but the exfoliated molybdenum disulfide nanosheets are very easy to re-aggregate. Modification of molybdenum disulfide with organic molecules can greatl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F3/06G02F1/355G02F1/361
CPCC07F3/003G02F1/3619G02F1/355C07B2200/11Y02E10/549
Inventor 张弛李星希伏露露
Owner TONGJI UNIV
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