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

Overview

Journal ACS Omega

Publisher American Chemical Society

Specialty Chemistry

Date 2019 Aug 29

PMID 31458259

Citations 3

Authors

William J Bodnaryk

Darryl Fong

Alex Adronov

Affiliations

Soon will be listed here.

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--carbazole) derivative, followed by isolation of the metallic species remaining in the residue using an electron-poor methylated poly(fluorene--pyridine) polymer. Characterization of the electronic nature of extracted samples was carried out via a combination of absorption, Raman, and fluorescence spectroscopy, as well as electrical conductivity measurements. Using this methodology, the metallic species in the sample were enriched 2-fold in comparison to the raw starting material. These results indicate that the use of electron-poor polymers is an effective strategy for the enrichment of metallic species.

Citing Articles

Decoration of Polyfluorene-Wrapped Carbon Nanotubes with Photocleavable Side-Chains.

Ritaine D, Adronov A Molecules. 2023; 28(3).

PMID: 36771137 PMC: 9920975. DOI: 10.3390/molecules28031471.

Polymethyl(1-Butyric acidyl)silane-Assisted Dispersion and Density Gradient Ultracentrifugation Separation of Single-Walled Carbon Nanotubes.

Liu H, Zhou Q, Lian Y Nanomaterials (Basel). 2022; 12(12).

PMID: 35745430 PMC: 9227055. DOI: 10.3390/nano12122094.

Separation of Semiconducting Carbon Nanotubes Using Conjugated Polymer Wrapping.

Wang J, Lei T Polymers (Basel). 2020; 12(7).

PMID: 32668780 PMC: 7407812. DOI: 10.3390/polym12071548.

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