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Title:
AQUEOUS SOLUTION FOR STRUCTURAL SEPARATION OF CARBON NANOTUBES, METHOD FOR SEPARATING AND RECOVERING CARBON NANOTUBES WITH USE OF SAID AQUEOUS SOLUTION, AND CARBON NANOTUBES OBTAINED BY SAID METHOD
Document Type and Number:
WIPO Patent Application WO/2020/022414
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide: an aqueous solution for structural separation, which is capable of separating carbon nanotubes (CNT) having a specific structure with high accuracy by acting on CNT; a separation/recovery method which is capable of separating CNT having a specific structure with high accuracy by causing this aqueous solution to act thereon; and CNT which are obtained by this separation/recovery method. The present invention made it possible to separate CNT having a specific structure with high accuracy by solubilizing lithocholic acid or a lithocholic acid isomer, which is highly hydrophobic and is not soluble in water by itself, and using an aqueous solution that contains this solubilized lithocholic acid or this solubilized lithocholic acid isomer as an aqueous solution for structural separation of CNT.

Inventors:
TANAKA TAKESHI (JP)
YOMOGIDA YOHEI (JP)
KATAURA HIROMICHI (JP)
Application Number:
PCT/JP2019/029149
Publication Date:
January 30, 2020
Filing Date:
July 25, 2019
Export Citation:
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Assignee:
AIST (JP)
International Classes:
C01B32/172; B82Y40/00; C01B32/159
Domestic Patent References:
WO2005077827A12005-08-25
Foreign References:
JP2017518945A2017-07-13
JP2012144426A2012-08-02
JP2011184225A2011-09-22
US20100072458A12010-03-25
JP2010502548A2010-01-28
Other References:
TU, X. ET AL.: "DNA sequence motifs for structure- specific recognition and separation of carbon nanotubes", NATURE, vol. 460, 9 July 2009 (2009-07-09), pages 250 - 253, XP055497639, DOI: 10.1038/nature08116
FAGAN, J. A. ET AL.: "Isolation of specific small-diameter single-wall carbon nanotube species via aqueous two-phase extraction", ADVANCED MATERIALS, vol. 26, 21 January 2014 (2014-01-21), pages 2800 - 2804
SONG, W. ET AL.: "Synthesis of bandgap-controlled semiconducting single-walled carbon nanotubes", ACS NANO, vol. 4, no. 2, 27 January 2010 (2010-01-27), pages 1012 - 1018, XP055680054, DOI: 10.1021/nn901135b
Attorney, Agent or Firm:
ETO Yasuko et al. (JP)
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