Nanocarbon film and producing method thereof

• US 8,052,896 B2
• Filed: 02/24/2009
• Issued: 11/08/2011
• Est. Priority Date: 02/28/2008
• Status: Expired due to Fees

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Inventors: Hayashi, Naoyuki, Kato, Takashi
• Primary Examiner(s): Gulakowski; Randy
• Assistant Examiner(s): THOMAS, JAISON P
• Application Number:
  US12/379,492
• Publication Number:
  US 20090218549A1
• Time in Patent Office: 987 Days
• Field of Search: 252/500, 252/502, 252/510, 204/157.15, 204/158.2, 427/457, 427/595
• US Class Current: 252/500
• CPC Class Codes: H01B 1/04 mainly consisting of carbon-silicon compounds, carbon or silicon
• CPC Class Codes: H01B 1/24 the conductive material comprising carbon-silicon compounds, carbon or silicon

Abstract

A nanocarbon film that is produced in such a manner that, after a nanocarbon dispersion containing nanocarbon and a dispersant is used to form a film containing the nanocarbon and the dispersant, an external stimulus is applied to the film to at least partially decompose the dispersant contained in the film. Light irradiation is preferably applied as the external stimulus.

Claims

1. A method of producing a nanocarbon film, comprising:

providing a nanocarbon dispersion containing nanocarbon and a dispersant on a support;

forming a film containing the nanocarbon and the dispersant from the nanocarbon dispersion provided on the support; and

applying an external stimulus to the film to at least partially decompose the dispersant contained in the film,

wherein light irradiation is applied as the external stimulus, and

wherein the light irradiation is performed by use of a xenon light source or a super xenon light source.

2. The method of producing of a nanocarbon film of claim 1, wherein the dispersant is a surfactant.

3. The method of producing of a nanocarbon film of claim 1, wherein the surfactant is betaine.

4. The method of producing of a nanocarbon film of claim 3, wherein the betaine is a compound represented by the following Formula (A):

5. The method of producing of a nanocarbon film of claim 2, wherein the surfactant is a compound represented by any one of the following Formulae (1) to (7)

6. The method of producing of a nanocarbon film of claim 2, wherein the surfactant is 3-(3-colamid propyl)dimethylamino-2-hydroxy-1-propane sulfonic acid, or a compound represented by any one of the following Formulae (1) to (4)

7. The method of producing of a nanocarbon film of claim 1, wherein the nanocarbon is a single-walled carbon nanotube or a multi-walled carbon nanotube.

8. The method of producing of a nanocarbon film of claim 1, wherein the support is a glass substrate or a resin film substrate.

9. The method of producing of a nanocarbon film of claim 1, wherein the support contains a UV absorbent.

10. A method of producing a nanocarbon film, comprising:

providing a nanocarbon dispersion containing nanocarbon and a dispersant on a support;

forming a film containing the nanocarbon and the dispersant from the nanocarbon dispersion provided on the support; and

applying an external stimulus to the film to reduce a resistance value of the film

wherein light irradiation is applied as the external stimulus, and

wherein the light irradiation is performed by use of a xenon light source or a super xenon light source.