Alternate Layer-by-Layer Adsorption of Single- and Double-Walled Carbon Nanotubes Wrapped by Functionalized β-1,3-Glucan Polysaccharides

被引:24
|
作者
Sugikawa, Kouta [1 ]
Numata, Munenori [2 ]
Kaneko, Kenji [1 ]
Sada, Kazuki [1 ]
Shinkai, Seiji [1 ,3 ]
机构
[1] Kyushu Univ, Grad Sch Engn, Nishi Ku, Fukuoka 8190385, Japan
[2] Kyoto Prefectural Univ, Grad Sch Life & Environm Sci, Nishi Ku, Fukuoka 8190385, Japan
[3] Inst Syst Informat Technol & Nanotechnol, Nishi Ku, Fukuoka 8190385, Japan
关键词
D O I
10.1021/la802211q
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A great deal of attention has been focused on exploiting novel methods to fabricate thin carbonaceous capsules from multiple components for advanced materials. A layer-by-layer (LbL) method is therefore being introduced to synthesize thin and multi-carbon nanotube (CNT)-based hollow capsules from CNT complexes with cationic or anionic complementarily functionalized beta-1,3-glucans as building-blocks. These ionic beta-1,3-glucans wrap around single-walled carbon nanotubes (SWNTs) and double-walled carbon nanotubes (DWNTs) to form water-soluble complexes with ionic groups on their exterior surface. Alternate self-assembly of these CNT complexes on the silica particles is demonstrated in solution by electrostatic interactions. The LbL adsorption processes were carefully monitored by zeta-potential measurements, frequency shifts of a quartz crystal microbalance (QCM), and electron micrographs. Silica particles were then dissolved away by HF acid to obtain CNT-based hollow capsules composed of SWNTs and DWNTs. We believe that these novel surface adsorption methods are useful for potential design of CNT-based advanced functional materials.
引用
收藏
页码:13270 / 13275
页数:6
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