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1. (WO2018099774) SEPARATION OF SEMI-CONDUCTING AND METALLIC SINGLE-WALLED CARBON NANOTUBES USING A POLYTUNGSTATE

Pub. No.:    WO/2018/099774    International Application No.:    PCT/EP2017/079989
Publication Date: Fri Jun 08 01:59:59 CEST 2018 International Filing Date: Thu Nov 23 00:59:59 CET 2017
IPC: C01B 32/172
H01L 51/30
Applicants: BASF SE
Inventors: TOMOVIC, Zeljko
REIS, Wieland
MIKHAEL, Jules
Title: SEPARATION OF SEMI-CONDUCTING AND METALLIC SINGLE-WALLED CARBON NANOTUBES USING A POLYTUNGSTATE
Abstract:
The present invention relates to a method for separating semi-conducting and metallic single-walled carbon nanotubes from each other and, if present, from other carbonaceous material, or for separating semi-conducting single-walled carbon nanotubes from other carbonaceous material, via centrifugation performed by a temperature of > 25°C using a solution of a polytungstate as separation medium; to semi-conducting single-walled carbon nanotubes obtainable by this method; and to the use of these semi-conducting single-walled carbon nanotubes e.g. in electronic devices, optical devices, optoelectronic devices, energy storage devices and the like.