Organic Solvent-Based Graphene Oxide Liquid Crystals: A Facile Route toward the Next Generation of Self-Assembled Layer-by-Layer Multifunctional 3D Architectures
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- 作者：Rouhollah Jalili ; Seyed Hamed Aboutalebi ; Dorna Esrafilzadeh ; Konstantin Konstantinov ; Simon E. Moulton ; Joselito M. Razal ; Gordon G. Wallace
- 刊名：ACS Nano
- 出版年：2013
- 出版时间：May 28, 2013
- 年：2013
- 卷：7
- 期：5
- 页码：3981-3990
- 全文大小：620K
- 年卷期：v.7,no.5(May 28, 2013)
- ISSN：1936-086X
文摘
We introduce soft self-assembly of ultralarge liquid crystalline (LC) graphene oxide (GO) sheets in a wide range of organic solvents overcoming the practical limitations imposed on LC GO processing in water. This expands the number of known solvents which can support amphiphilic self-assembly to ethanol, acetone, tetrahydrofuran, N-dimethylformamide, N-cyclohexyl-2-pyrrolidone, and a number of other organic solvents, many of which were not known to afford solvophobic self-assembly prior to this report. The LC behavior of the as-prepared GO sheets in organic solvents has enabled us to disperse and organize substantial amounts of aggregate-free single-walled carbon nanotubes (SWNTs, up to 10 wt %) without compromise in LC properties. The as-prepared LC GO-SWNT dispersions were employed to achieve self-assembled layer-by-layer multifunctional 3D hybrid architectures comprising SWNTs and GO with unrivalled superior mechanical properties (Young鈥檚 modulus in excess of 50 GPa and tensile strength of more than 500 MPa).