Efficient direct water dispersion of multi-walled carbon nanotubes by functionalization with lysine

被引：31

作者：

Hu, Nantao ^{[1
]}

Dang, Guodong ^{[1
]}

Zhou, Hongwei ^{[1
]}

Jing, Jing ^{[1
]}

Chen, Chunhai ^{[1
]}

机构：

[1] Jilin Univ, Alan G MacDiarmid Inst, Changchun 130012, Peoples R China

来源：

MATERIALS LETTERS | 2007年 / 61卷 / 30期

关键词：

carbon nanotubes; biocompatibility; surface properties; functional groups;

D O I：

10.1016/j.matlet.2007.04.084

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A small molecule, lysine, has been attached onto the Multi-Walled carbon nanotubes (MWNTs) by producing acyl chloride on the carboxylic groups associated with the nanotubes. Subsequently, highly water-dispersed nanotubes were obtained. Stable concentration as high as 10 mg/ml was obtained in deionized water that was nearly 2 orders of magnitude higher than that obtained from the acidized MWNTs. The functionalized MWNTs can be dispersed in water under a wide range of pH values (5-14) and exhibit pH responsive. Combining the properties of carbon nanotubes and the versatility and biocompatibility of lysine, these lysine functionalized MWNTs could find potential applications in biological applications. And this method could also be used to functionalize other nanomaterials by lysine. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：5285 / 5287

页数：3

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