Simultaneous alignment and dispersion of carbon nanotubes with lyotropic liquid crystals
Simultaneous alignment and dispersion of carbon nanotubes with lyotropic liquid crystals
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碳纳米管与溶致液晶的同时取向和分散
DOI：
10.1002/pssb.200669146
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
S. Roth
中科院分区：
文献类型：
--
作者：
J. Lagerwall;G. Scalia;M. Haluska;U. Dettlaff‐Weglikowska;F. Giesselmann;S. Roth
我们证明，单壁碳纳米管（SWCNTs）可以宏观上通过模板在溶致液晶（LC），自组装各向异性流体取向，但没有平移顺序。我们通过共振拉曼光谱验证了碳纳米管自发地采用了主机的排列。基于表面活性剂SDS的水性LC主体同时使纳米管在数月或更长的时间尺度内保持良好分散。LC可以负载CNT到与通常用于分散CNT的标准各向同性1%表面活性剂溶液几乎相同的程度，而不会发生任何光学可见的成束。（© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA，魏因海姆）
We demonstrate that single‐wall carbon nanotubes (SWCNTs) can be macroscopically aligned by means of templating in a lyotropic nematic liquid crystal (LC), a self‐assembling anisotropic fluid with orientational but no translational order. The CNTs spontaneously adopt the alignment of the host, as we verify by means of resonant Raman spectroscopy. The aqueous LC host, based on the surfactant SDS, simultaneously keeps the nanotubes well dispersed over time scales of months or longer. The LC can be loaded with CNTs to almost the same extent as the standard isotropic 1% surfactant solutions normally used for dispersing CNTs without any optically visible bundling occurring. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)