Effects of centrifugation on the carboxyl modified single-walled carbon nanotubes suspension

Authors
Lee, Jung-AhLee, Byung ChulLee, Sang-MyungPaek, Kyeong-KapJu, Byeong-KwonLee, Yun-HiShin, Hyun Joon
Issue Date
2009-05
Publisher
CRC PRESS-TAYLOR & FRANCIS GROUP
Citation
Nanotech 2009 Conference, pp.397 - +
Abstract
The centrifugal method is adopted to investigate the properties of carboxyl-terminated single-walled carbon nanotube (c-SWCNT) suspension. The chemical properties of each supernatant sample are confirmed with the Fourier transform infrared analysis (FTIR) and are not influenced by centrifugal process. The optical properties observed by ultraviolet-visible-near infrared spectroscopy (UV-VIS-NIR) show that the oxidation debris co-existed with c-SWCNTs in supernatant samples is a material creating perturbation at the electronic structure of the c-SWCNT. The G-band in the Raman results displays the red shift toward the low frequency side. The red shift of G-band is estimated because the removal of the oxidation debris by centrifugal method induces the de-doping effect on the electrical structure of SWCNTs.
URI
https://pubs.kist.re.kr/handle/201004/116036
Appears in Collections:
KIST Conference Paper > 2009
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