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Title

Preparation of Metallic and Semiconducting SWCNT Inks by a Simple Chromatographic Method: A Two-Parameter Study

AuthorsSantidrián, Ana; Lozano, Nekane; Benito, Ana M. ; Maser, Wolfgang K. ; Ansón Casaos, Alejandro
KeywordsCarbon nanotube
Purification
Separation
Electronic properties
Concentration
Gel chromatography
Issue Date27-May-2018
PublisherSpringer
CitationAdvanced Nanotechnologies for Detection and Defence against CBRN Agents. Published in NATO Science for Peace and Security Series B: Physics and Biophysics (Part F2): 229-238 (2018)
AbstractSingle-walled carbon nanotubes (SWCNTs) show either metallic or semiconducting character, and are potential candidates for the development of small electronic devices. However, commercial SWCNT materials consist of a mixture of many different SWCNT conformations and certain impurities. In this work, SWCNTs are dispersed in an aqueous medium, purified by centrifugation, and finally separated into metallic and semiconducting inks by a gel chromatog-raphy method. The separation is directly performed at ambient conditions, and the influence of the ink concentration and the chromatography column length are thoroughly evaluated. The most efficient separation, distinguishing between fami-lies of semiconducting SWCNT with different diameters, is achieved at the lowest concentration and with the longest column. These results provide a promising base for availability of SWCNTs with well-defined characteristics needed for the de-velopment of electronic devices.
Publisher version (URL)http://dx.doi.org/10.1007/978-94-024-1298-7_22
URIhttp://hdl.handle.net/10261/171398
DOI10.1007/978-94-024-1298-7_22
ISSN1874-6500
Appears in Collections:(ICB) Artículos
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