Fullerene derivative fine wire and its manufacturing method

• US 7,976,814 B2
• Filed: 10/06/2004
• Issued: 07/12/2011
• Est. Priority Date: 10/07/2003
• Status: Expired due to Fees

• Current Assignee: National Institute for Materials Science
• Original Assignee: National Institute for Materials Science
• Inventors: Miyazawa, Kun'ichi, Suga, Tadatomo, Mashino, Tadahiko
• Primary Examiner(s): Mayes; Melvin C
• Assistant Examiner(s): Qian; Yun
• Application Number:
  US10/574,920
• Publication Number:
  US 20070053822A1
• Time in Patent Office: 2,470 Days
• Field of Search: 423/445
• US Class Current: 423/445.00B
• CPC Class Codes: B82Y 30/00 Nanotechnology for materials or surface science, e.g. nanocomposites
• CPC Class Codes: C07C 2604/00 Fullerenes, e.g. C60 buckminsterfullerene or C70
• CPC Class Codes: C07C 67/52 by change in the physical state, e.g. crystallisation
• CPC Class Codes: C07C 69/608 Esters of carboxylic acids having a carboxyl group bound to an acyclic carbon atom and having a ring other than a six-membered aromatic ring in the acid moiety

Abstract

The invention presents a fullerene derivative fine wire composed of basic component unit of fullerene derivative, being made of acicular crystal of fullerene derivative, as a fine wire showing high crystallinity and semiconductor performance.

Claims

1. A manufacturing method of fullerene derivative fine wire composed of acicular crystal of a diethyl ester malonate derivative of C₆₀ and fullerene C₆₀, being a manufacturing method of fullerene derivative fine wire comprising at least the steps of preparing a solution by dissolving fullerene C₆₀ in a first solvent, mixing a solution containing the diethyl ester malonate derivative of C₆₀ with the solution, adding a second solvent of lower fullerene derivative and fullerene dissolving ability than the first solvent to this mixed solution, forming a liquid-liquid interface between the solution and the second solvent, and depositing the fullerene derivative fine wire on the liquid-liquid interface.

2. The manufacturing method of fullerene derivative fine wire of claim 1, wherein the first solvent is at least one kind selected from the group consisting of benzene, toluene, xylene, hexane, and pentane.

3. The manufacturing method of fullerene derivative fine wire of claim 1, wherein the second solvent is selected from the group consisting of methyl alcohol, ethyl alcohol, n-propyl alcohol, isopropyl alcohol, butyl alcohol, and pentanol.