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FULLERENE STRUCTURE, METHOD FOR PRODUCING SAME, AND DEVICE FOR PRODUCING SAME

Foreign code F210010571
File No. (S2020-0139-N0)
Posted date 2021年11月1日
Country 世界知的所有権機関(WIPO)
International application number 2021JP002667
International publication number WO 2021153565
Date of international filing 令和3年1月26日(2021.1.26)
Date of international publication 令和3年8月5日(2021.8.5)
Priority data
  • 特願2020-011562 (2020.1.28) JP
Title FULLERENE STRUCTURE, METHOD FOR PRODUCING SAME, AND DEVICE FOR PRODUCING SAME
Abstract Provided is a fullerene structure that includes a columnar-shaped portion and a fin portion protruding from the columnar-shaped portion, both the columnar-shaped portion and the fin portion being fullerenes. Provided is a method for producing a fullerene structure that includes heating a fullerene raw material to or above the sublimable temperature in the presence of a non-oxidizing gas and cooling the heated atmosphere of the fullerene raw material. In one example, the method includes supplying the non-oxidizing gas in one direction, and heating the fullerene raw material to or above the sublimable temperature on the upstream side and cooling the heated atmosphere of the fullerene raw material on the downstream side, with respect to the non-oxidizing gas supply direction.
Outline of related art and contending technology BACKGROUND ART
Fullerenes alone are small spherical molecules and exhibit various excellent properties, but in industrial fields, they are widely used as aggregates, composites, and the like of fullerenes. For example, in organic solar cells, fullerene-containing composites are used as acceptor materials, and in organic transistors, fullerenes are formed and used in thin film form on substrates. In such applications, the fullerene, which is a spherical molecule, is finely powdered, and therefore is used in which particulate fullerene is supported on a support. In order to improve the handleability of fullerenes alone, it is desirable to form micro-scale structures of fullerenes. Furthermore, even in micro-scale structures, it is desirable that the crystallinity of the fullerene be high in order to obtain excellent characteristics of the fullerene alone.
There is a material called a fullerene nanowhisker in which fullerenes are arrayed in a fiber shape. Since this structure is formed via a formation method using a liquid-liquid interface (Non-Patent Document 1: K. Miyazawa et al, Surf. Interface Anal. 35, 117 (2003).), the formation speed is extremely slow, and the structure becomes bottleneck in application to industrial fields.
Patent Document 1 proposes a method for producing a hollow hexagonal columnar fullerene microstructure by mixing an isopropyl alcohol solution containing a metal peroxide and a toluene solution containing fullerenes under low temperature conditions. In the method disclosed in Patent Document 1, a reaction is performed in a solution at a low temperature, and thus a time of 10 hours or longer is required.
Patent Document 2 proposes a method for producing fullerene nanowhisker nanofiber nanotubes supporting a metal catalyst by holding an isopropyl alcohol solution containing a platinum catalyst and/or a ruthenium catalyst and a toluene solution containing fullerenes at-10~ 30 °C in a state where a liquid phase interface is formed. In the method disclosed in Patent Document 2, a time of 0.5~ 20 days is required to perform the reaction at the liquid phase interface at a low temperature.
Patent Document 3 proposes a method of producing fullerene nanowhiskers by creating two or more interfaces between a saturated solution of carbon fullerenes and a second solvent, and precipitating a fullerene nanowhisker aggregate at each of the interfaces. With the method disclosed in Patent Document 3, an attempt is made to shorten the formation time of the fullerene nano whiskers and improve the structural control of uniformity and length, but the growth rate of the fullerene nano whiskers is approximately 1 μm/min.
Patent Document 4 proposes a carbon structure in which silver ion particles are formed on the surface of a fine wire made of fullerene molecules, and the fine wire forms a hexahedron shape. Patent Document 4 proposes to produce a carbon structure by incubating a silver ion solution of 1-butanol, adding the silver ion solution to the fullerene solution, forming a liquid-liquid interface between the fullerene solution and the silver ion solution, and precipitating a fullerene structure. In the working example of Patent Document 4, incubation of the silver ion solution takes 8~ 20 days, and precipitation of the fullerene structure takes 20~ 40 hours.
Patent Document 5 proposes a method of producing a two-component fullerene nanowhisker of a target length and diameter by pouring a poor solvent into a mixed solution containing C60 powder and C70 powder to form a liquid-liquid interface, and allowing the solution to stand for 2 days at 15 °C.
  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • THE UNIVERSITY OF ELECTRO-COMMUNICATIONS
  • YOKOHAMA NATIONAL UNIVERSITY
  • Inventor
  • TSUKAMOTO Takahiro
  • OYA Takahide
  • ONISHI Taku
IPC(International Patent Classification)
Specified countries National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS IT JO JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN WS ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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