Spontaneous Formation of Liquid Crystals in Ultralarge Graphene Oxide Dispersions

被引：351

作者：

Aboutalebi, Seyed Hamed ^{[1
]}

Gudarzi, Mohsen Moazzami ^{[1
]}

Zheng, Qing Bin ^{[1
]}

Kim, Jang-Kyo ^{[1
]}

机构：

[1] Hong Kong Univ Sci & Technol, Dept Mech Engn, Kowloon, Hong Kong, Peoples R China

来源：

ADVANCED FUNCTIONAL MATERIALS | 2011年 / 21卷 / 15期

关键词：

MULTIWALL CARBON NANOTUBES; GRAPHITE OXIDE; SHEETS; SUSPENSIONS; FILMS; PARTICLES; PLATELETS; FIBERS; PAPER;

D O I：

10.1002/adfm.201100448

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel process is developed to synthesize graphene oxide sheets with an ultralarge size based on a solution-phase method involving pre-exfoliation of graphite flakes. Spontaneous formation of lyotropic nematic liquid crystals is identified upon the addition of the ultralarge graphene oxide sheets in water above a critical concentration of about 0.1 wt%. It is the lowest filler content ever reported for the formation of liquid crystals from any colloid, arising mainly from the ultrahigh aspect ratio of the graphene oxide sheets of over 30 000. It is proposed that the self-assembled brick-like graphene oxide nanostructure can be applied in many areas, such as energy-storage devices and nanocomposites with a high degree of orientation.

引用

页码：2978 / 2988

页数：11

共 50 条

[1]

Behabtu N, 2010, NAT NANOTECHNOL, V5, P406, DOI [10.1038/NNANO.2010.86, 10.1038/nnano.2010.86]

[2] Electronic confinement and coherence in patterned epitaxial graphene [J].

Berger, Claire ;

Song, Zhimin ;

Li, Xuebin ;

Wu, Xiaosong ;

Brown, Nate ;

Naud, Cecile ;

Mayou, Didier ;

Li, Tianbo ;

Hass, Joanna ;

Marchenkov, Atexei N. ;

Conrad, Edward H. ;

First, Phillip N. ;

de Heer, Wait A. .

SCIENCE, 2006, 312 (5777) :1191-1196

[3] Liquid crystal behavior of single wall carbon nanotubes [J].

Bravo-Sanchez, M. ;

Simmons, Trevor J. ;

Vidal, M. A. .

CARBON, 2010, 48 (12) :3531-3542

[4]

Brodie B. C., 1859, PHILOS T R SOC LONDO, V149, P249, DOI [10.1098/rspl.1859.0007, DOI 10.1098/RSTL.1859.0013]

[5] Langmuir-Blodgett Assembly of Graphite Oxide Single Layers [J].

Cote, Laura J. ;

Kim, Franklin ;

Huang, Jiaxing .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (03) :1043-1049

[6] Preparation and characterization of graphene oxide paper [J].

Dikin, Dmitriy A. ;

Stankovich, Sasha ;

Zimney, Eric J. ;

Piner, Richard D. ;

Dommett, Geoffrey H. B. ;

Evmenenko, Guennadi ;

Nguyen, SonBinh T. ;

Ruoff, Rodney S. .

NATURE, 2007, 448 (7152) :457-460

[7] Ultra-large single-layer graphene obtained from solution chemical reduction and its electrical properties [J].

Dong, Xiaochen ;

Su, Ching-Yuan ;

Zhang, Wenjing ;

Zhao, Jianwen ;

Ling, Qidan ;

Huang, Wei ;

Chen, Peng ;

Li, Lain-Jong .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2010, 12 (09) :2164-2169

[8] The chemistry of graphene oxide [J].

Dreyer, Daniel R. ;

Park, Sungjin ;

Bielawski, Christopher W. ;

Ruoff, Rodney S. .

CHEMICAL SOCIETY REVIEWS, 2010, 39 (01) :228-240

[9] Graphene-based Composite Thin Films for Electronics [J].

Eda, Goki ;

Chhowalla, Manish .

NANO LETTERS, 2009, 9 (02) :814-818

[10] MONTE-CARLO STUDY OF THE ISOTROPIC AND NEMATIC PHASES OF INFINITELY THIN HARD PLATELETS [J].

EPPENGA, R ;

FRENKEL, D .

MOLECULAR PHYSICS, 1984, 52 (06) :1303-1334

← 1 2 3 4 5 →