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Large-scale separation of metallic and semiconducting single-walled carbon nanotubes |
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| Authors: | Maeda Yutaka Kimura Shin-Ichi Kanda Makoto Hirashima Yuya Hasegawa Tadashi Wakahara Takatsugu Lian Yongfu Nakahodo Tsukasa Tsuchiya Takahiro Akasaka Takeshi Lu Jing Zhang Xinwei Gao Zhengxiang Yu Yapeng Nagase Shigeru Kazaoui Said Minami Nobutsugu Shimizu Tetsuo Tokumoto Hiroshi Saito Riichiro |
| Institution: | Department of Chemistry, Tokyo Gakugei University, Tokyo 184-8501, Japan. |
| Abstract: | In the applications of single-walled carbon nanotubes (SWNTs), it is extremely important to separate semiconducting and metallic SWNTs. Although several methods have been reported for the separation, only low yields have been achieved at great expense. We show a separation method involving a dispersion-centrifugation process in a tetrahydrofuran solution of amine, which makes metallic SWNTs highly concentrated to 87% in a simple way. |
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