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Method of selecting structure of carbon nanotube through photoirradiation

外国特許コード F110005333
整理番号 IAC-14-3US
掲載日 2011年8月31日
出願国 アメリカ合衆国
出願番号 52157503
公報番号 20060013758
公報番号 7803346
出願日 平成15年4月1日(2003.4.1)
公報発行日 平成18年1月19日(2006.1.19)
公報発行日 平成22年9月28日(2010.9.28)
国際出願番号 JP2003004182
国際公開番号 WO2004060801
国際出願日 平成15年4月1日(2003.4.1)
国際公開日 平成16年7月22日(2004.7.22)
優先権データ
  • 特願2003-000718 (2003.1.6) JP
  • 2003WO-JP04182 (2003.4.1) WO
発明の名称 (英語) Method of selecting structure of carbon nanotube through photoirradiation
発明の概要(英語) (US7803346)
A method for selectively obtaining carbon nanotubes having specific structures by selectively obtaining carbon nanotubes having structures different from the structures of the carbon nanotubes to be vanished by irradiating carbon nanotubes with a light beam of single wavelength so as to have carbon nanotubes in specific electron states in the excited states, and oxidizing and combusting the carbon nanotubes in the excited states by an oxygen or an oxidizing agent so as to vanish the same.
特許請求の範囲(英語) [claim1]

(US7803346)
The invention claimed is:
[claim2]
7.
A method for removing single-walled carbon nanotubes of 1.0 nm and 1.1 nm diameters from a mixture of single-walled carbon nanotubes of various diameters, comprising irradiating the mixture of single-walled carbon nanotubes of various diameters with a light beam of a single wavelength of 500 nm under an oxidative environment to remove single-walled carbon nanotubes of 1.0 nm and 1.1 nm diameters.
[claim3]
1. A method for selecting single-walled carbon nanotubes of 1.2 nm diameter from a mixture of single-walled carbon nanotubes of various diameters, comprising irradiating the mixture of single-walled carbon nanotubes of various diameters with a light beam of a single wavelength of 620 nm under an oxidative environment to obtain single-walled carbon nanotubes of 1.2 nm diameter.
[claim4]
2. The method according to claim 1, wherein the oxidative environment comprises an oxidizing agent selected from the group consisting of hydrogen peroxide in water, nitric acid and potassium permanganate.
[claim5]
3. The method according to claim 2, wherein the oxidization is carried out at a temperature range of 0 deg. C. to 500 deg. C.
[claim6]
4. A method for removing single-walled carbon nanotubes of 0.96 nm and 1.0 nm diameters from a mixture of single-walled carbon nanotubes of various diameters, comprising irradiating the mixture of single-walled carbon nanotubes of various diameters with a light beam of a single wavelength of 420 nm under an oxidative environment to remove single-walled carbon nanotubes of 0.96 nm and 1.0 nm diameters.
[claim7]
5. The method according to claim 4, wherein the oxidative environment comprises an oxidizing agent selected from the group consisting of hydrogen peroxide in water, nitric acid and potassium permanganate.
[claim8]
6. The method according to claim 5, wherein the oxidization is carried out at a temperature range of 0 deg. C. to 500 deg. C.
[claim9]
8. The method according to claim 7, wherein the oxidative environment comprises an oxidizing agent selected from the group consisting of hydrogen peroxide in water, nitric acid and potassium permanganate.
[claim10]
9. The method according to claim 8, wherein the oxidization is carried out at a temperature range of 0 deg. C. to 500 deg. C.
[claim11]
10. A method for removing single-walled carbon nanotubes of 0.96 nm, 1.0 nm and 1.1 nm diameters from a mixture of single-walled carbon nanotubes of various diameters, comprising irradiating the mixture of single-walled carbon nanotubes of various diameters with a light beam of a single wavelength of 620 nm under an oxidative environment to remove single-walled carbon nanotubes of 0.96 nm, 1.0 nm and 1.1 nm diameters.
[claim12]
11. The method according to claim 10, wherein the oxidative environment comprises an oxidizing agent selected from the group consisting of hydrogen peroxide in water, nitric acid and potassium permanganate.
[claim13]
12. The method according to claim 11, wherein the oxidization is carried out at a temperature range of 0 deg. C. to 500 deg. C.
  • 発明者/出願人(英語)
  • IIJIMA SUMIO
  • YUDASAKA MASAKO
  • ZHANG MINFANG
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
  • NEC
国際特許分類(IPC)
米国特許分類/主・副
  • 423/461
  • 977/750
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