化学
碳纳米管
偶极子
纳米技术
化学物理
静电学
纳米管
分子物理学
计算化学
有机化学
物理化学
材料科学
作者
Bunshi Fugetsu,Wenhai Han,Noriaki Endo,Yuichi Kamiya,Toshio Okuhara
出处
期刊:Chemistry Letters
[The Chemical Society of Japan]
日期:2005-09-01
卷期号:34 (9): 1218-1219
被引量:58
摘要
Abstract Dipole/dipole electrostatic attraction was used for the first time for disassembling the single-walled carbon nanotube (SWCNT) bundles. A self-assembled zwitterionic monolayer (SAZM) was created by modification of the SWCNT bundles with a sulfonate/quaternary-ammonium type of zwitterionic surfactants. The headgroups of the SAZM align at the terminal-end and form anti-parallel doublets. Dipole/dipole electrostatic attractions occurred readily as the SAZM approached to another. SWCNT bundles have been disassembled into individual tubes because of the strong dipole/dipole attractions. Large quantities of unbundled single-walled carbon nanotubes (SWCNTs) were obtained within a single step by this method. Concentric circular membranes containing the unbundled SWCNTs were prepared. The unbundled SWCNTs were found to have tendencies to curve around the circular direction.
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