Industrial-scale separation of high-purity single-chirality single-wall carbon nanotubes for biological imaging

Yohei Yomogida, Takeshi Tanaka, Minfang Zhang, Masako Yudasaka, Xiaojun Wei and Hiromichi Kataura ()
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Yohei Yomogida: Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)
Takeshi Tanaka: Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)
Minfang Zhang: CNT-Application Research Center, National Institute of Advanced Industrial Science and Technology (AIST)
Masako Yudasaka: Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)
Xiaojun Wei: Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)
Hiromichi Kataura: Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)

Nature Communications, 2016, vol. 7, issue 1, 1-8

Abstract: Abstract Single-chirality, single-wall carbon nanotubes are desired due to their inherent physical properties and performance characteristics. Here, we demonstrate a chromatographic separation method based on a newly discovered chirality-selective affinity between carbon nanotubes and a gel containing a mixture of the surfactants. In this system, two different selectivities are found: chiral-angle selectivity and diameter selectivity. Since the chirality of nanotubes is determined by the chiral angle and diameter, combining these independent selectivities leads to high-resolution single-chirality separation with milligram-scale throughput and high purity. Furthermore, we present efficient vascular imaging of mice using separated single-chirality (9,4) nanotubes. Due to efficient absorption and emission, blood vessels can be recognized even with the use of ∼100-fold lower injected dose than the reported value for pristine nanotubes. Thus, 1 day of separation provides material for up to 15,000 imaging experiments, which is acceptable for industrial use.

Date: 2016
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DOI: 10.1038/ncomms12056

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