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Process for producing PVP-fullerene complex and aqueous solution thereof

The technology of a fullerene compound and its manufacturing method is applied in the field of manufacturing PVP-fullerene compound and its aqueous solution, which can solve the problems such as difficulty in forming a water-soluble solution and specifically forming an aqueous solution.

Active Publication Date: 2008-04-23
VITAMIN C60 BIORES
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, when such fullerenes are to be actually used, it is actually very difficult to exhibit excellent characteristics such as the above-mentioned physiological activity and to use them with good stability, and it is also difficult to make them water-soluble or to specifically constitute an aqueous solution.

Method used

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  • Process for producing PVP-fullerene complex and aqueous solution thereof
  • Process for producing PVP-fullerene complex and aqueous solution thereof

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Experimental program
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Effect test

Embodiment

[0035] A solution of 16.0 mg of toluene (20 ml) of MIX (mixed) fullerene (average molecular weight 744: powder) containing C60 fullerene and C70 fullerene, ethanol (10 ml of 2.0 g of PVP of weight average molecular weight 60000) were prepared respectively. ) solution, the two were mixed at room temperature and stirred for 12 hours. Thus, a uniform mixed solution was obtained.

[0036] Then, this homogeneous mixed solution was evaporated to dryness, and then 30 ml of water was added to form a suspension.

[0037] The suspension was evaporated, and the toluene was distilled off by azeotropy to make it dry. Then 30ml of water was added and sonicated for 15 minutes. Thus, an aqueous PVP-fullerene complex solution was obtained. Filtration (0.80 micron filter) was performed to obtain the final PVP-fullerene complex aqueous solution.

[0038] The obtained aqueous solution had high transparency, and no trace of a black precipitate formed when left at room temperature for a ...

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Abstract

An aromatic hydrocarbon solution of a fullerene or a fullerene mixture is mixed with an ethanol solution of polyvinylpyrrolidone (PVP), water is added to the mixed solution, the solvent is removed and then an aqueous solution of a complex of a fullerene or a fullerene mixture with polyvinylpyrrolidone (PVP) is obtained. Under a condition free from a halogen, a PVP / fullerene complex excellent in manifestation of fullerene properties, stability and safety and an aqueous solution thereof are obtained.

Description

technical field [0001] The present invention relates to a novel production method of an aqueous solution of fullerenes, which have attracted attention as having physiological activities such as antioxidant activity, anticancer properties, and antibacterial properties, and water-soluble fullerenes. Background technique [0002] C60, C70, and fullerenes with higher-order carbon spherical shell structures or tubular structures, as fullerenes including their chemical modifications, complexes, clathrates, etc., have antioxidant activity, anticancer Physiologically active substances such as antibacterial and antibacterial properties have attracted continuous attention. [0003] However, in actual use of such fullerenes, it is very difficult to exhibit excellent properties such as the above-mentioned physiological activity and to use them stably, and it is also difficult to make them water-soluble or specifically constitute an aqueous solution. [0004] Under such circumstances, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L39/06C08K3/04C01B31/02
CPCC08K3/04C09D139/06C01B31/0213B82Y40/00B82Y30/00C01B31/0206C08K5/01A61P31/04A61P35/00C01B32/15C01B32/156C01B32/152C08K3/045C08L39/06
Inventor 高田弘弥松林贤司
Owner VITAMIN C60 BIORES
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