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Mixed-Solvent Engineering as a Way around the Trade-Off between Yield and Purity of (7,3) Single-Walled Carbon Nanotubes Obtained Using Conjugated Polymer Extraction.

Published version

Published version
Peer-reviewed

Repository DOI


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Authors

Dzienia, Andrzej 
Just, Dominik 
Taborowska, Patrycja 
Mielanczyk, Anna 
Milowska, Karolina Z 

Abstract

The inability to purify nanomaterials such as single-walled carbon nanotubes (SWCNTs) to the desired extent hampers the progress in nanoscience. Various SWCNT types can be purified by extraction, but it is challenging to establish conditions giving rise to the isolation of high-purity fractions. The problem stems from the fact that common organic solvents or water cannot provide an optimal environment for purification. Consequently, one must often decide between the separation yield and purity of the product. This article reports how through the self-synthesis of poly(9,9-dioctylfluorene-alt-benzothiadiazole) with tailored characteristics, in-depth elucidation of the extraction process, and mixed-solvent engineering, a high-yield isolation of monochiral (7,3) SWCNTs is developed. The combination of toluene and tetralin affords a separation medium of unique properties, wherein both high yield and exceptional purity can be attained simultaneously. The reported results pave the way for further research on this rare chirality, which, as illustrated herein, is much more reactive than any of the previously separated SWCNTs.

Description

Keywords

extraction, polymers, purification, single-walled carbon nanotubes

Journal Title

Small

Conference Name

Journal ISSN

1613-6810
1613-6829

Volume Title

Publisher

Wiley
Sponsorship
National Science Centre, Poland (2020/39/D/ST5/00285)
Polish National Agency for Academic Exchange (BPI/PST/2021/1/00039)