A versatile approach to obtain a high-purity semiconducting single-walled carbon nanotube dispersion with conjugated polymers

High-purity semiconducting single-walled carbon nanotubes (s-SWCNTs) are urgently needed in the development of beyond-silicon nanoelectronics. The utility of conjugated polymers to assist in the sorting of s-SWCNTs has attracted immense attention due to the simplicity of the sorting process and the high selectivity of conjugated polymers for s-SWCNTs. Rather than developing new types of conjugated polymers, this work provides a versatile and facile route for the sorting of s-SWCNTs with improved purity which is far beyond the sensitivity of a spectrometer.