En route to single-step, two-phase purification of carbon nanotubes facilitated by high-throughput spectroscopy Journal Article


Authors: Podlesny, B.; Olszewska, B.; Yaari, Z.; Jena, P. V.; Ghahramani, G.; Feiner, R.; Heller, D. A.; Janas, D.
Article Title: En route to single-step, two-phase purification of carbon nanotubes facilitated by high-throughput spectroscopy
Abstract: Chirality purification of single-walled carbon nanotubes (SWCNTs) is desirable for applications in many fields, but general utility is currently hampered by low throughput. We discovered a method to obtain single-chirality SWCNT enrichment by the aqueous two-phase extraction (ATPE) method in a single step. To achieve appropriate resolution, a biphasic system of non-ionic tri-block copolymer surfactant is varied with an ionic surfactant. A nearly-monochiral fraction of SWCNTs can then be harvested from the top phase. We also found, via high-throughput, near-infrared excitation-emission photoluminescence spectroscopy, that the parameter space of ATPE can be mapped to probe the mechanics of the separation process. Finally, we found that optimized conditions can be used for sorting of SWCNTs wrapped with ssDNA as well. Elimination of the need for surfactant exchange and simplicity of the separation process make the approach promising for high-yield generation of purified single-chirality SWCNT preparations. © 2021, The Author(s).
Journal Title: Scientific Reports
Volume: 11
ISSN: 2045-2322
Publisher: Nature Publishing Group  
Date Published: 2021-05-19
Start Page: 10618
Language: English
DOI: 10.1038/s41598-021-89839-4
PROVIDER: scopus
PMCID: PMC8134628
PUBMED: 34011997
DOI/URL:
Notes: Article -- Export Date: 1 June 2021 -- Source: Scopus
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MSK Authors
  1. Daniel Alan Heller
    73 Heller
  2. Prakrit Vaibhav Jena
    24 Jena
  3. Zvi Aharon Yaari
    3 Yaari
  4. Ron Feiner
    1 Feiner