[19a-P6-1~79] 17 Nanocarbon Technology（Poster）

[19a-P6-24] Rapid and efficient removal of water soluble polymer from carbon nanotube dispersion

〇Kazuki Ueno¹, Haruka Omachi^1,2, Tomohiko Komuro¹, Jun Hirotani³, Yutaka Ohno^3,4, Hisanori Shinohara^1,5 (1.Grad. Sch. of Sci., Nagoya Univ., 2.RCMS, Nagoya Univ., 3.Grad. Sch. of Eng., Nagoya Univ., 4.IMaSS, Nagoya Univ., 5.IAR, Nagoya Univ.)

Keywords:carbon nanotube, polymer removal, thin film transistor

We accomplished rapid removal of water-soluble polymers from s-SWCNT dispersion. By mixing with halogenated solvent CH₂Cl₂, PEG was immediately precipitated out. ¹H NMR spectra indicate >99% of PEG polymer was removed. TFT measurements were also carried out and fabricated devices exhibits a high on/off ratio (>10⁵) with normally-off state.