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Tetraphenylporphyrin covalently functionalized titanium disulfide nonlinear nano hybrid material and preparation thereof

A nano-hybrid material, tetraphenylporphyrin technology, applied in nonlinear optics, organic chemistry, organic chemistry methods, etc., to achieve the effect of expanding modifiability

Active Publication Date: 2021-12-03
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no examples of titanium disulfide modification using covalent chemistry have yet been seen.

Method used

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  • Tetraphenylporphyrin covalently functionalized titanium disulfide nonlinear nano hybrid material and preparation thereof
  • Tetraphenylporphyrin covalently functionalized titanium disulfide nonlinear nano hybrid material and preparation thereof
  • Tetraphenylporphyrin covalently functionalized titanium disulfide nonlinear nano hybrid material and preparation thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0042] refer to figure 1 As shown in the process flow, this embodiment provides a method for preparing tetraphenylporphyrin covalently functionalized titanium disulfide nonlinear nano-hybrid material:

[0043] first step:

[0044] Pyrrole (15ml, 218mmol), benzaldehyde (24ml, 218mmol) and solvent propionic acid (150ml) were added to a three-necked flask (500ml), and the reaction was stirred for 45 minutes at reflux temperature (ie 141°C). After the system dropped to room temperature, a purple-black solid precipitated out. Filter and wash the filter cake with hot water and methanol. Further recrystallization with dichloromethane / methanol gave a purple metallic powder, namely tetraphenylporphyrin TPP (20.08 g, yield 60.0%). Because the synthesis of tetraphenylporphyrin is a classic reaction (Adler, A.D.; Longo, F.R.; Finarelli, J.D.; Goldmacher, J.; Assour, J.; Korsakoff, L. (1967).A simplified synthesis for meso-tetraphenylporphine.J.Org.Chem.32(2),476-476.), so only H NMR s...

Embodiment 2

[0062] Compared with Example 1, most of them are the same, except that in this example, 5-(4-aminophenyl)-10,15,20-phenylporphyrin, tetrafluoroboric acid and isoamyl nitrite The molar ratio is 1:6:2.8.

Embodiment 3

[0064] Compared with Example 1, most of them are the same, except that in this example, 5-(4-aminophenyl)-10,15,20-phenylporphyrin, tetrafluoroboric acid and isoamyl nitrite The molar ratio is 1:7:3.2.

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Abstract

The invention relates to a tetraphenylporphyrin covalent functionalized titanium disulfide nonlinear nano hybrid material and preparation thereof, the hybrid material is obtained by a free radical addition reaction of tetraphenylporphyrin diazonium salt TPP-N2 + BF4-and sulfur atoms on the surface layer of a titanium disulfide nanosheet, and the hybrid material is a first example about the covalent functionalization of the titanium disulfide nanosheet at present. Compared with a hybrid material obtained by simply and physically mixing the two types of optical functional materials, the hybrid material obtained by bonding carbon-sulfur covalent bonds shows a remarkably enhanced saturated absorption phenomenon in a visible light range. According to the invention, chemical modification methods of titanium disulfide are enriched, and the obtained material has a wide application prospect in the photoelectric fields of nonlinear optical devices and the like.

Description

technical field [0001] The invention belongs to the technical field of third-order nonlinear optical materials, and relates to a tetraphenylporphyrin covalently functionalized titanium disulfide nonlinear nano-hybrid material and its preparation. Background technique [0002] Nonlinear optics is a branch of optics that studies the photoresponse of media under intense light. In recent years, materials with nonlinear optical response have been increasingly used in pulsed lasers, photodetectors, optical storage, and optical switches. Among many nonlinear optical phenomena, saturable absorption (SA) and reverse saturable absorption (RSA) are the two most important types. The former means that in the interaction between the incident light and the medium, as the intensity of the incident light increases, the light transmittance of the medium gradually increases. Therefore, the material with SA phenomenon can be used to realize the amplification of laser pulse signal. RSA, on th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D487/22G02F1/355G02F1/361
CPCC07D487/22G02F1/3619G02F1/355C07B2200/11Y02E10/549
Inventor 张弛方言伏露露
Owner TONGJI UNIV
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