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

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

doi:10.1088/0957-4484/27/41/41LT01

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

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

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

9 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 language	English
Article number	41LT01
Journal	Nanotechnology
Volume	27
Issue number	41
DOIs	https://doi.org/10.1088/0957-4484/27/41/41LT01
Publication status	Published - 2016 Sept 7

Bibliographical note

Publisher Copyright:
© 2016 IOP Publishing Ltd.

All Science Journal Classification (ASJC) codes

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

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10.1088/0957-4484/27/41/41LT01

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

Abstract

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All Science Journal Classification (ASJC) codes

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