Aqueous two-phase extraction of semiconducting single-wall carbon nanotubes with isomaltodextrin and thin-film transistor applications
Aqueous two-phase extraction of semiconducting single-wall carbon nanotubes with isomaltodextrin and thin-film transistor applications
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DOI：
10.7567/1882-0786/ab369e
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发表时间：
2019-07
影响因子：
2.3
通讯作者：
H. Omachi;Tomohiko Komuro;Kaisei Matsumoto;M. Nakajima;Hikaru Watanabe;J. Hirotani;Y. Ohno;H. Shinohara
中科院分区：
文献类型：
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作者：
H. Omachi;Tomohiko Komuro;Kaisei Matsumoto;M. Nakajima;Hikaru Watanabe;J. Hirotani;Y. Ohno;H. Shinohara
半导体单壁碳纳米管（s-SWCNT）是一种很有前途的材料，在薄膜晶体管（TFT）中具有潜在的应用前景。然而，需要分离技术来获得高度富集的 s-SWCNT，因为传统生长的 SWCNT 是 70% 半导体和 30% 金属 SWCNT 的混合物。在这里，我们开发了一种使用异麦芽糊精的高纯度 s-SWCNT 的快速单步水两相萃取方法，异麦芽糊精是一种具有成本效益的多糖，含有大量 α-1,6-糖苷键。我们还成功地直接从高纯度 s-SWCNT 提取物中制造出高密度均匀薄膜。制造的 TFT 表现出优异的开/关比、载流子迁移率和开电流密度。
Semiconducting single-wall carbon nanotubes (s-SWCNTs) are promising materials with potential applications in thin-film transistors (TFTs). However, separation techniques are required to obtain highly enriched s-SWCNTs since conventional as-grown SWCNTs are a mixture of 70% semiconducting and 30% metallic SWCNTs. Here, we developed a rapid single-step aqueous two-phase extraction of high-purity s-SWCNTs using isomaltodextrin, which is a cost-effective polysaccharide that contains a large amount of α-1,6-glucosidic linkages. We also succeeded in fabricating high-density uniform films directly from the high-purity s-SWCNT extract. Fabricated TFTs exhibited an excellent on/off ratio, carrier mobility, and on-current density.