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Method for in-situ synthesis of metal phthalocyanine/carbon nano-tube compound

A carbon nanotube and metal phthalocyanine technology, which is applied in the field of in-situ synthesis of metal phthalocyanine/carbon nanotube composites, can solve the problem of easy shedding, difficulty in controlling the uniform distribution of molecules, and the loose combination of phthalocyanine molecules and carbon nanotubes and other issues to achieve a solid combination

Inactive Publication Date: 2008-09-03
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] It has been reported in the literature that metal phthalocyanine / carbon nanotube composites are prepared by physical blending method. Although this method is relatively simple, the combination between phthalocyanine molecules and carbon nanotubes is not tight and easy to fall off, and it is difficult to control the molecules in carbon nanotubes. Uniform distribution on the tube surface

Method used

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  • Method for in-situ synthesis of metal phthalocyanine/carbon nano-tube compound
  • Method for in-situ synthesis of metal phthalocyanine/carbon nano-tube compound
  • Method for in-situ synthesis of metal phthalocyanine/carbon nano-tube compound

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Effect test

Embodiment 1

[0021] 1) Take 0.10 g of multi-walled carbon nanotubes with a diameter of 50-70 nm and a length of 20 μm, add them to 40 ml of nitrobenzene, oscillate and disperse under ultrasonic waves for 20 minutes, and obtain a suspension of carbon nanotubes;

[0022] 2) 0.76g o-dicyanobenzene, 0.18g 1,2,4,5-benzene tetracarbonitrile and 0.22g FeCl 2 4H 2 After O grinding and mixing, add to the carbon nanotube suspension in step 1), under the protection of nitrogen, stir and react at 200°C for 4h, after the product is filtered, it is rinsed with absolute ethanol until the filtrate is colorless, and the product is obtained at 80 ℃ vacuum drying for 24h to obtain the binuclear iron phthalocyanine / carbon nanotube composite, with figure 1 It is the electronic absorption spectrum of the dinuclear iron phthalocyanine / carbon nanotube composite in DMSO, and the Q band maximum absorption peak of the dinuclear iron phthalocyanine appears at 684nm.

Embodiment 2

[0024] 1) Take 0.20 g of multi-walled carbon nanotubes with a diameter of 50-70 nm and a length of 20 μm, add 40 ml of nitrobenzene, oscillate and disperse under ultrasonic waves for 20 minutes, and obtain a suspension of carbon nanotubes;

[0025] 2) 0.64g o-dicyanobenzene, 0.18g 1,2,4,5-benzene tetracarbonitrile and 0.22g FeCl 2 4H 2 After O grinding and mixing, add to the carbon nanotube suspension in step 1), under the protection of nitrogen, stir and react at 200°C for 4h, after the product is filtered, it is rinsed with absolute ethanol until the filtrate is colorless, and the product is obtained at 80 ℃ vacuum drying for 24h to obtain the binuclear iron phthalocyanine / carbon nanotube composite, from the attached figure 2 The transmission electron micrographs of the dinuclear iron phthalocyanine / carbon nanotube composites show that the dinuclear iron phthalocyanine is uniformly coated on the surface of the carbon nanotubes.

Embodiment 3

[0027] 1) Take 0.10 g of multi-walled carbon nanotubes with a diameter of 50-70 nm and a length of 20 μm, add 40 ml of nitrobenzene, oscillate and disperse under ultrasonic waves for 40 minutes, and obtain a suspension of carbon nanotubes;

[0028] 2) 0.50g o-dicyanobenzene, 0.18g 1,2,4,5-benzene tetracarbonitrile, 0.22g FeCl 2 4H 2 After O grinding and mixing, add to the carbon nanotube suspension in step 1), under the protection of nitrogen, stir and react at 200°C for 4h, after the product is filtered, it is rinsed with absolute ethanol until the filtrate is colorless, and the product is obtained at 80 ℃ vacuum drying for 24h to obtain the binuclear iron phthalocyanine / carbon nanotube composite, with image 3 It is a high-resolution transmission electron microscope photo of the dinuclear iron phthalocyanine / carbon nanotube composite, and obvious lattice fringes appear in the photo, indicating that the dinuclear iron phthalocyanine forms an ordered microcrystalline structur...

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Abstract

The invention relates to an in situ synthetic method of metalphthalein / carbon nanotube composite, which belongs to the field of the inorganic / organic nanometer composite material research. The invention solves the problems of metalphthalein / carbon nanotube composite prepared by physical blend method, including weak combination between phthalocyanine molecule and carbon nanotubes, and non-uniform distribution of the phthalocyanine molecule on the surface of the carbon nanotubes. The synthetic method includes adding the carbon nanotubes to the organic solvent, and ultrasonic dispersing for 10-40min to obtain the suspension; and mixing the precursor with metal-salt at a molar ratio of 3-8:1, adding to the suspension at a weight ratio of mixture to the carbon nanotubes of 3-11:1, stirring and reacting at 160-240 DEG C in the nitrogen protecting atmosphere for 1-6h, filtering the resultant, rinsing with he absolute ethanol until the filtrate is colorless, and vacuum drying at 50-100 DEG C for 5-30h to obtain the objective product. The phthalocyanine molecule and the carbon nanotubes are combined tightly, and the phthalocyanine molecule can uniformly grow on the external wall of the carbon nanotubes to form microcrystals.

Description

technical field [0001] The invention belongs to the research field of inorganic / organic nanocomposite materials, and specifically relates to a method based on in-situ synthesis of metal phthalocyanine / carbon nanotube composites. Background technique [0002] Carbon nanotube (CNT) is a quasi-one-dimensional quantum material in which carbon atoms are arranged in a hexagonal single-layer or multi-layer coaxial tube, the radial dimension is on the order of nanometers, and the axial dimension is on the order of micrometers. Therefore, it has very unique electrical and mechanical properties. In recent years, it has rapidly become a research hotspot in basic sciences such as physics, chemistry, materials and even biology. application scene. [0003] At present, carbon nanotubes with various specific properties are gradually attracting people's interest. The surface of carbon nanotubes is modified with organic, inorganic or biomolecules to significantly change the physical and chem...

Claims

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Application Information

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IPC IPC(8): C01B31/02
Inventor 胡晓明左霞夏定国
Owner BEIJING UNIV OF TECH
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