Cation-controlled aqueous dispersions of alginic-acid-wrapped multi-walled carbon nanotubes

被引：54

作者：

Liu, Yu ^{[1
]}

Liang, Peng ^{[1
]}

Zhang, Heng-Yi ^{[1
]}

Guo, Dong-Sheng ^{[1
]}

机构：

[1] Nankai Univ, Dept Chem, State Key Lab Elementoorgan Chem, Tianjin 300071, Peoples R China

来源：

SMALL | 2006年 / 2卷 / 07期

关键词：

alginic acid; carbon nanotubes; cations; noncovalent interactions; oligosaccharides;

D O I：

10.1002/smll.200600099

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The utilization of alginic acid (AA) as a solubilizing agent to prepare AA-wrapped multi-walled carbon nanotube (MWCNT-AA) was investigated. AA can efficiently solubilize multi-walled carbon nanotubes (MWCNT) in aqueous solution because of the unique binding mode between the MWCNTs and the amylose homologue, and the high ratio of MWCNTs to AA. The observations of transmission electron microscopy (TEM) images has suggested that the part of the hydrophobic surface of the nanotubes is naked in the aqueous phase, which is useful for preserving its intrinsic physical and chemical properties. The addition of alkaline-earth-metal, transition-metal, heavy-metal, and lanthanoid cations to the AA-wrpped nanotubes results in the precipitation of MWCNTs from aqueous solution. The results show that cycle mediated by specific cations has potential application in aqueous biological systems and medicinal chemistry.

引用

页码：874 / 878

页数：5

共 80 条

[11] Noncovalent engineering of carbon nanotube surfaces by rigid, functional conjugated polymers [J].

Chen, J ;

Liu, HY ;

Weimer, WA ;

Halls, MD ;

Waldeck, DH ;

Walker, GC .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (31) :9034-9035

[12] Solution properties of single-walled carbon nanotubes [J].

Chen, J ;

Hamon, MA ;

Hu, H ;

Chen, YS ;

Rao, AM ;

Eklund, PC ;

Haddon, RC .

SCIENCE, 1998, 282 (5386) :95-98

[13] Noncovalent sidewall functionalization of single-walled carbon nanotubes for protein immobilization [J].

Chen, RJ ;

Zhang, YG ;

Wang, DW ;

Dai, HJ .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2001, 123 (16) :3838-3839

[14] Biomimetic engineering of carbon nanotubes by using cell surface mucin mimics [J].

Chen, X ;

Lee, GS ;

Zettl, A ;

Bertozzi, CR .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2004, 43 (45) :6111-6116

[15]

Chen X., 2004, ANGEW CHEM, V116, P6237

[16] Mechanical energy storage in carbon nanotube springs [J].

Chesnokov, SA ;

Nalimova, VA ;

Rinzler, AG ;

Smalley, RE ;

Fischer, JE .

PHYSICAL REVIEW LETTERS, 1999, 82 (02) :343-346

[17] Polymer relationships during preparation of chitosan-alginate and poly-l-lysine-alginate nanospheres [J].

De, SJ ;

Robinson, D .

JOURNAL OF CONTROLLED RELEASE, 2003, 89 (01) :101-112

[18]

DEAN JA, 1985, LANGES HDB CHEM, P5

[19] Separation of carbon nanotubes by size exclusion chromatography [J].

Duesberg, GS ;

Burghard, M ;

Muster, J ;

Philipp, G ;

Roth, S .

CHEMICAL COMMUNICATIONS, 1998, (03) :435-436

[20] Solvent-free functionalization of carbon nanotubes [J].

Dyke, CA ;

Tour, JM .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (05) :1156-1157

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