PT Journal AU Li, H Gordeev, G Garrity, O Reich, S Flavel, BS TI Separation of Small-Diameter Single-Walled Carbon Nanotubes in One to Three Steps with Aqueous Two-Phase Extraction SO ACS nano PY 2019 BP 2567 EP 2578 VL 13 IS 2 DI 10.1021/acsnano.8b09579 LA english ER