Solubilization of single-wall carbon nanotubes by supramolecular encapsulation of helical amylose

被引：247

作者：

Kim, OK ^{[1
]}

Je, JT ^{[1
]}

Baldwin, JW ^{[1
]}

Kooi, S ^{[1
]}

Pehrsson, PE ^{[1
]}

Buckley, LJ ^{[1
]}

机构：

[1] USN, Div Chem, Res Lab, Washington, DC 20375 USA

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2003年 / 125卷 / 15期

关键词：

D O I：

10.1021/ja029233b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We have developed a simple, efficient process for solubilization of single-wall carbon nanotubes (SWNTs) with amylose in aqueous DMSO. This process requires two important conditions, presonication of SWNTs and subsequent amylose treatment in an optimum mixture of DMSO/H2O. The former step separates SWNT bundles, and the latter step provides a maximum cooperative interaction of SWNTs with amylose, leading to the immediate and complete solubilization. The best solvent condition for this is around 10-20% DMSO, in which amylose assumes a random conformation or an interrupted helix. This indicates that the amylose helix is not the prerequisite for encapsulation of SWNTs. The SEM and AFM images of the encapsulated SWNTs manifest loosely twisted ribbons wrapping around SWNTs, which are locally intertwined as a multiple twist, but no clumps of the host amylose are seen on SWNT capsules. Copyright © 2003 American Chemical Society.

引用

页码：4426 / 4427

页数：2

共 23 条

[1] Organic solvent dispersions of single-walled carbon nanotubes: Toward solutions of pristine nanotubes [J].