Enrichment of Metallic Carbon Nanotubes Using a Two-Polymer Extraction Method.

ABSTRACT: The large-scale enrichment of metallic carbon nanotubes is a challenging goal that has proven elusive. Selective dispersion of carbon nanotubes by specifically designed conjugated polymers is effective for isolating semiconducting species, but a comparable system does not exist for isolating metallic species. Here, we report a two-polymer system where semiconducting species are extracted from the raw HiPCO or plasma-torch nanotube starting material using an electron-rich poly(fluorene-co-carbazole) derivative, followed by isolation of the metallic species remaining in the residue using an electron-poor methylated poly(fluorene-co-pyridine) polymer. Characterization of the electronic nature of extracted samples was carried out via a combination of absorption, Raman, and fluore

SUBMITTER: Bodnaryk WJ 

PROVIDER: S-EPMC6644074 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature