Laboratory of Functional Chemo-Systems, UMR 7199, Faculté de pharmacie, 74 Route du Rhin, 67400 Illkirch-Graffenstaden, France.
J Phys Chem B. 2010 May 6;114(17):5718-22. doi: 10.1021/jp1010007.
Because they have a great propensity to aggregation in water, solubilization of carbon nanotubes (CNTs) in aqueous media remains an important challenge. Our laboratory has reported the self-organization of synthetic lipids into hemi-micellar structures at the carbon nanotubes surface. Subsequent stabilization of these carbon nanotube/lipid assembly (CNT/LA) constructs is achieved through photopolymerization of the diyne motif of the pentacosa-10,12-diynoic lipids. Herein we investigate the scope of this coating procedure for CNT solubilization. A panel of CNTs was selected according to the method of production and the characteristics of CNTs. The study revealed that it is possible to reach a complete lipid adsorption. The TEM analyses demonstrate that lipid hemi-micellar self-assemblies can be formed around SWNTs as well as around DWNTs and MWNTs, particularly for carbon nanotubes produced by the arc-discharged method. The nanotube suspensions show a very good stability and are homogeneous for months even at a high nanotubes concentration.
由于它们在水中具有很强的聚集倾向，因此将碳纳米管（CNT）溶解在水介质中仍然是一个重要的挑战。我们的实验室已经报道了合成脂质在碳纳米管表面自组装成半胶束结构。通过五碳-10,12-二炔酸脂质的二炔基的光聚合来实现这些碳纳米管/脂质组装（CNT/LA）结构的后续稳定化。在此，我们研究了这种涂层程序用于 CNT 溶解的范围。根据 CNT 的生产方法和 CNT 的特性选择了一组 CNT。研究表明，完全吸附脂质是有可能的。TEM 分析表明，脂质半胶束自组装可以在单壁碳纳米管以及双壁碳纳米管和多壁碳纳米管周围形成，特别是对于电弧放电法生产的碳纳米管。即使在高碳纳米管浓度下，纳米管悬浮液也具有非常好的稳定性并且数月内保持均匀。
