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

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2022-12-22
Major/Subject
Mcode
Degree programme
Language
en
Pages
8
1564-1571
Series
Beilstein Journal of Nanotechnology, Volume 13
Abstract
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.
Description
Funding Information: A.G.N and A.E.G thank the Council on grants of the President of the Russian Federation grant number НШ-1330.2022.1.3 and Russian Science Foundation (Project no. 22-13-00436). The theoretical calculations (L.Y.A.) were supported by Russian Science Foundation (Project identifier 21-79-10411). E.D.O. is grateful to RSF (project no. 21-72-20050) for support of photoluminescence investigations. Publisher Copyright: © 2022 Kalachikova et al.; licensee Beilstein-Institut. License and terms: see end of document.
Keywords
Carbon nanotubes, Photoluminescence spectroscopy, Riboflavin, Size exclusive gel chromatography, Swcnt extraction
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Citation
Kalachikova , P M , Goldt , A E , Khabushev , E M , Eremin , T V , Zatsepin , T S , Obraztsova , E D , Larionov , K V , Antipina , L Y , Sorokin , P B & Nasibulin , A G 2022 , ' Single-step extraction of small-diameter single-walled carbon nanotubes in the presence of riboflavin ' , Beilstein Journal of Nanotechnology , vol. 13 , pp. 1564-1571 . https://doi.org/10.3762/bjnano.13.130