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Enrichment of Large-Diameter Semiconducting Single-Walled Carbon Nanotubes by a Mixed-Extractor Strategy

Enrichment of Large-Diameter Semiconducting Single-Walled Carbon Nanotubes by a Mixed-Extractor Strategy

Ping Zhang, Wenhui Yi, Lei Bai, Yilong Tian, Jin Hou, Weiqiu Jin, Jinhai Si, Xun Hou

Chem Asian J. 2019 Nov 4;14(21):3855-3862.

PMID: 31496032

Abstract:

In this work, we report a new mixed-extractor strategy to improve the sorting yield of large-diameter semiconducting single-walled carbon nanotubes (s-SWCNTs) with high purity. In the new mixed-extractor strategy, two kinds of conjugated polymers with different rigidity, poly(9,9-n-dihexyl-2,7-fluorene-alt-9-phenyl-3,6-carbazole) (PDFP) and poly(9,9-dioctylfluorene-alt-benzothiadiazole) (P8BT), are used to sort large-diameter s-SWCNTs through two simple sonication processes. To our surprise, although PDFP itself shows no selectivity toward s-SWCNTs, it can greatly enhance the sorting yield of P8BT. Using the PDFP/P8BT mixed-extractor method, the yield of sorted s-SWCNTs has been enhanced by 5 times with a purity above 99 % in comparison to that using P8BT single-extractor method. In addition, the photoluminescence (PL) excitation maps shows that the PDFP/P8BT mixed-extractor system not only enhances the sorting yield substantially, but also tends to be enrichment of (15,4) SWCNTs with the diameter of 1.36 nm.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP856893759	Poly(9,9-n-dihexyl-2,7-fluorene-alt-9-phenyl-3,6-carbazole)		856893-75-9	Price

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