Affinity-mediated sorting order reversal of single-walled carbon nanotubes in density gradient ultracentrifugation

Myungsu Jang, Somin Kim, Haneul Jeong, Sang Yong Ju

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Sorted single-walled carbon nanotubes (SWNTs) are of paramount importance for their utilization in high-end optoelectronic applications. Sodium cholate (SC)-based density gradient ultracentrifugation (DGU) has been instrumental in isolating small diameter (d t) SWNTs. Here, we show that SWNTs wrapped by flavin mononucleotide (FMN) as a dispersing agent are sorted in DGU, and show sorting order reversal behavior, departing from prototypical SC-SWNT trends. Larger d t SWNTs are sorted in lower density (ρ), and buoyant ρ distribution of FMN-SWNT ranges from 1.15-1.25 g cm-3. Such a nanotube layering pattern originates from both the binding affinity between FMN and SWNT and the less-susceptible hydrated volume of remote phosphate sidechains of FMN according to nanotube d t change.

Original languageEnglish
Article number41LT01
JournalNanotechnology
Volume27
Issue number41
DOIs
Publication statusPublished - 2016 Sep 7

Fingerprint

Single-walled carbon nanotubes (SWCN)
Sorting
Flavin Mononucleotide
Sodium Cholate
Nanotubes
Sodium
Ultracentrifugation
Optoelectronic devices
Phosphates

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

Cite this

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abstract = "Sorted single-walled carbon nanotubes (SWNTs) are of paramount importance for their utilization in high-end optoelectronic applications. Sodium cholate (SC)-based density gradient ultracentrifugation (DGU) has been instrumental in isolating small diameter (d t) SWNTs. Here, we show that SWNTs wrapped by flavin mononucleotide (FMN) as a dispersing agent are sorted in DGU, and show sorting order reversal behavior, departing from prototypical SC-SWNT trends. Larger d t SWNTs are sorted in lower density (ρ), and buoyant ρ distribution of FMN-SWNT ranges from 1.15-1.25 g cm-3. Such a nanotube layering pattern originates from both the binding affinity between FMN and SWNT and the less-susceptible hydrated volume of remote phosphate sidechains of FMN according to nanotube d t change.",
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Affinity-mediated sorting order reversal of single-walled carbon nanotubes in density gradient ultracentrifugation. / Jang, Myungsu; Kim, Somin; Jeong, Haneul; Ju, Sang Yong.

In: Nanotechnology, Vol. 27, No. 41, 41LT01, 07.09.2016.

Research output: Contribution to journalArticle

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AU - Kim, Somin

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