Debundling of single-walled carbon nanotubes by using natural polyelectrolytes

被引：67

作者：

Liu, Yangqiao

Gao, Lian ^{[1
]}

Zheng, Shan

Wang, Yan

Sun, Jing

Kajiura, Hisashi

Li, Yongming

Noda, Kazuhiro

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

[2] Sony Corp, Mat Labs, Kanagawa 2430021, Japan

来源：

NANOTECHNOLOGY | 2007年 / 18卷 / 36期

关键词：

NONCOVALENT INTERACTIONS; WATER-SOLUBILIZATION; AQUEOUS-SOLUTIONS; DISPERSION; POLYMER; FUNCTIONALIZATION; SURFACTANT; STABILITY; WEIGHT; DESIGN;

D O I：

10.1088/0957-4484/18/36/365702

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Natural polyelectrolytes (NPs), including sodium lignosulfonate, humic acid and so forth, are reported for the first time to solubilize single-walled carbon nanotubes (SWNTs) in water through a noncovalent interaction. A variety of methods, including transmission electron microscopy (TEM), visible-near-infrared (vis-NIR) spectra, Raman spectra and zeta potential measurements, were used to characterize the NP-dispersed SWNT solutions. It is found that the SWNTs can be exfoliated into thin bundles or individual tubes, even at NP concentrations as low as 0.15 mg ml(-1). Their high performance is attributed to the abundance of aromatic groups and ionized groups in the NP molecules. This method of solubilization opens the way for exploiting new natural materials as SWNT solubilizers and may find applications in nanocomposites, self-assembly, and so forth.

引用

页数：6

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