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Conformational-Induced Doping Effect of Sodium Dodecyl Benzene Sulfonate on Single Walled Carbon Nanotubes

Title
Conformational-Induced Doping Effect of Sodium Dodecyl Benzene Sulfonate on Single Walled Carbon Nanotubes
Author
백운규
Keywords
DOPING; NADDBS; SURFACTANT; SWCNTS
Issue Date
2012-02
Publisher
American Scientific Publishers
Citation
Journal of Nanoscience and Nanotechnology, 2012, 12(2), P.1569~1641
Abstract
The doping behavior of single-walled carbon nanotubes (SWCNTs) was investigated with an emphasis on the control of the conformation of sodium dodecylbenzene sulfonate (NaDDBS) with sulfonate groups acting as an electro-withdrawing group. The conformation of adsorbed NaDDBS on SWCNTs was controlled as a function of the amount of NaDDBS. The doping behavior of SWCNTs was significantly affected by the dosing amount of NaDDBS due to the conformational change of NaDDBS adsorbed on the SWCNT surface, which affected the spatial distance between the SWCNT surface and the sulfonate groups in NaDDBS. At a higher concentration, the spatial distance between the sulfonate group in NaDDBS and SWCNT was not sufficiently close enough to dope SWCNT due to the repulsive forces between the sulfonate groups in NaDDBS. Alternatively, at a lower concentration, NaDDBS acted as a p-type dopant for SWCNTs. To this end, this paper demonstrates a new tendency of doping that is related to the adsorbed behavior of a dispersant.
URI
http://www.ingentaconnect.com/contentone/asp/jnn/2012/00000012/00000002/art00139http://hdl.handle.net/20.500.11754/67494
ISSN
1533-4880
DOI
10.1166/jnn.2012.4665
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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