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Preparation method of nanogold-fullerene nano composite material

A nano-composite material and nano-gold technology, which is applied in the field of preparation of nano-gold-fullerene nano-composite materials, can solve complex and other problems, achieve the effect of convenient synthesis steps, simple synthesis process, avoiding chemical reactions and purification processes

Inactive Publication Date: 2011-02-02
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Based on the special properties of gold nanoparticles and fullerenes, researchers have been working on the hybridization and connection of gold nanoparticles and fullerenes, and generally based on the modification of fullerenes or metal nanoparticles, but that is a very complicated work

Method used

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  • Preparation method of nanogold-fullerene nano composite material
  • Preparation method of nanogold-fullerene nano composite material
  • Preparation method of nanogold-fullerene nano composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0032] Embodiment 1 prepares the gold nanometer of 4-aminobenzenethiol / n-hexanethiol protection

[0033] The thiol compounds 4-Aminobenzenethiol (4-Aminobenzenethiol) and n-hexanethiol (1-Hexanethiol) (purity>96.0%) used in the experiment were purchased from TCI, Japan.

[0034] (1) 0.9 mmol of chloroauric acid hydrate (AuCl 3 ·HCl·4H 2 O) be dissolved in the dehydrated alcohol of 200 milliliters, after the system is vigorously stirred for 10 minutes, add 0.9 mmol of 4-aminobenzenethiol / n-hexanethiol (the molar ratio of 4-aminobenzenethiol and n-hexanethiol is 1: 1).

[0035] (2) 30 mL of freshly prepared NaBH 4 Ethanol solution (0.40mol / L) was slowly added to the mixed solution, and the dropwise addition time was two to two hours. Once the GNPs are formed, the color of the system changes from yellow to dark brown.

[0036] (3) The dark brown solution was continuously stirred for 3 hours, and then the mixture was stored in a refrigerator at -18° C. for 6-12 hours to contr...

Embodiment 2

[0040] Embodiment 2 prepares nano-gold-fullerene nanocomposite material

[0041] (1) 20 micromoles of fullerene and 5 micromoles of dry gold nanoparticles were respectively dispersed in 50 milliliters of toluene (or carbon tetrachloride) and ultrasonicated for 10-20 minutes before the next step of reaction, and then the two solutions Mix and stir vigorously at room temperature for 60-84 hours.

[0042] Wherein, the molar ratio of fullerene to gold nanoparticles is greater than 1.

[0043] (2) The solution containing the fullerene-metal composite is concentrated to 20 ml in a rotary evaporator at 50-60°C.

[0044] (3) Methanol or acetone (three times the volume of toluene) was added to the toluene solution, and then the mixture was purified by centrifugation (10000 rpm, 10 min).

[0045] Among them, the solubility of the fullerene-metal composite material in methanol or acetone is lower than that of fullerene, and the purpose of separating the two is achieved by centrifugatio...

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Abstract

The invention provides a preparation method of a nanogold-fullerene nano composite material. The preparation method comprises the following steps of: preparing 4-aminobenzenethiol / n-hexanethiol protected nanogold, and connecting the nanogold with fullerene to prepare the nanogold-fullerene nano composite material. The connection comprises the following steps of: respectively dispersing the nanogold and the fullerene in a toluene or carbon tetrachloride solution, ultrasonically mixing the two solutions, and violently stirring at room temperature; removing a part of toluene or carbon tetrachloride by evaporation concentration; adding a methanol or acetone solution, and centrifuging; removing the supernatant, dissolving the precipitate in toluene, methylene dichloride or ethanol, and ultrasonically dispersing; and repeating the process of centrifuging, removing supernatant and resuspending until the ultraviolet absorption peak of the fullerene is eliminated in the supernatant, and centrifugally collecting to obtain the nanogold-fullerene nano composite material. The method does not relate to the complex chemical modification of fullerene, has mild reaction conditions and avoids a great many of complex chemical reactions and purification processes.

Description

technical field [0001] The invention relates to a method for preparing a nanocomposite material, in particular to a method for preparing a nanometer gold-fullerene nanocomposite material. Background technique [0002] Research interest in gold nanoparticles (GNPs) has been going on for many years. Moreover, the application research after the functionalization of GNPs has become more and more attractive, ranging from catalysis to biomedicine. In terms of biomedical research and applications: drug transport, intracellular gene regulation, DNA self-assembly, antioxidants, cell Imaging, X-ray imaging contrast agents or CT imaging have brought many surprises to the field of modern nanotechnology. [0003] Since Kroto et al discovered the preparation method of fullerene-C60 in 1985, the practical application of fullerenes (such as C60, C70, C76, C84 and others) in the fields of chemistry, biology and nanoscience has attracted much attention. Great attention. Furthermore, for ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00
Inventor 耿马可张玉杰张欢陈楠樊春海黄庆
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI
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