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Large scale separation of single-chirality single-wall carbon nanotubes using gel column chromatography

Kataura, Hiromichi (NMRI, AIST, Tsukuba, JPN)

Because single-wall carbon nanotubes (SWCNTs) have structural flexibility, structure controlled synthesis is still very difficult. On the other hand, since physical properties of SWCNT is highly dependent on its structure, structure sorted SWCNT is highly desired especially for the electronic and opt-electronic device applications. Many structure sorting methods have been developed to date, but most of them are still within a laboratory scale. For the industrial use, we need really scalable sorting technology. In this work, we demonstrated to separate (9,4) and (10,3) singlechirality SWCNTs using one-step adsorption chromatography with mg/day scale [1]. Where, we used two different structure selections in the adsorption and desorption process, respectively. Furthermore, we can extend our method to the other chiralities. Since all materials and equipment used in this work were on the market, anybody can repeat our method easily. This repeatability is very important for industrial applications.

[1]. Y. Yomogida et al., Nat. Commun. 7, 12056 (2016). 

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