Single-step extraction of small-diameter single-walled carbon nanotubes in the presence of riboflavin

Polina M. Kalachikova, Anastasia E. Goldt, Eldar M. Khabushev, Timofei V. Eremin, Timofei S. Zatsepin, Elena D. Obraztsova, Konstantin V. Larionov, Liubov Yu Antipina, Pavel B. Sorokin, Albert G. Nasibulin*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)
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We propose a novel approach to disperse and extract small-diameter single-walled carbon nanotubes (SWCNTs) using an aqueous solution of riboflavin and Sephacryl gel. The extraction of small-diameter semiconducting SWCNTs was observed, regardless of the initial diameter distribution of the SWCNTs. Dispersion of SWCNTs occurs due to the adsorption of π-conjugated isoalloxazine moieties on the surface of small-diameter nanotubes and interactions between hydroxy groups of ribityl chains with water. During the SWCNT extraction, specific adsorption of riboflavin to SWCNTs leads to the minimization of interactions between the SWCNTs and gel media. Our experimental findings are supported by ab initio calculations demonstrating the impact of the riboflavin wrapping pattern around the SWCNTs on their interaction with the allyl dextran gel.

Original languageEnglish
Pages (from-to)1564-1571
Number of pages8
JournalBeilstein Journal of Nanotechnology
Publication statusPublished - 22 Dec 2022
MoE publication typeA1 Journal article-refereed


  • Carbon nanotubes
  • Photoluminescence spectroscopy
  • Riboflavin
  • Size exclusive gel chromatography
  • Swcnt extraction


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