Increased Solubility, Liquid-Crystalline Phase, and Selective Functionalization of Single-Walled Carbon Nanotube Polyelectrolyte Dispersions

被引：78

作者：

Jiang, Chengmin ^{[1
,2
]}

Saha, Avishek ^{[1
,2
]}

Xiang, Changsheng ^{[1
,2
]}

Young, Colin C. ^{[2
,3
,4
]}

Tour, James M. ^{[1
,2
,5
]}

Pasquali, Matteo ^{[1
,2
,4
]}

Marti, Angel A. ^{[1
,2
,6
]}

机构：

[1] Rice Univ, Dept Chem, Houston, TX 77005 USA

[2] Rice Univ, Richard E Smalley Inst Nanoscale Sci & Technol, Houston, TX 77005 USA

[3] Rice Univ, Appl Phys Program, Houston, TX 77005 USA

[4] Rice Univ, Dept Chem & Biomol Engn, Houston, TX 77005 USA

[5] Rice Univ, Dept Mech Engn & Mat Sci, Houston, TX 77005 USA

[6] Rice Univ, Dept Bioengn, Houston, TX 77005 USA

来源：

ACS NANO | 2013年 / 7卷 / 05期

关键词：

SWCNT polyelectrolytes; crown ethers; liquid crystal; diameter selectivity; ELECTRONIC-STRUCTURE; RAMAN-SPECTROSCOPY; FILMS; AGGREGATION; DISSOLUTION; SUPERACIDS; POLYETHERS; TRANSITION; DEPENDENCE; COMPLEXES;

D O I：

10.1021/nn4011544

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The solubility of single-walled carbon nanotube (SWCNT) polyelectrolytes [K(THF)](n)SWCNT in dimethyl sulfoxide (DMSO) was determined by a combination of centrifugation, UV-vis spectral properties, and solution extraction. The SWCNT formed a liquid crystal at a concentration above 3.8 mg/mL. Also, crown ether 18-crown-6 was found to Increase the solubility of the SWCNT polyelectrolytes in DMSO. Raman spectroscopy and near-infrared (NIR) fluorescence analyses were applied to study the functionalization of SWCNTs. Small-diameter SVICNTs were found to be preferentially functionalized when the SWCNT polyelectrolytes were dispersed in DMSO.

引用

页码：4503 / 4510

页数：8

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