Functional Surfactants for Carbon Nanotubes: Effects of Design

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• 作者：Friederike Ernst ; Timm Heek ; Antonio Setaro ; Rainer Haag ; Stephanie Reich
• 刊名：The Journal of Physical Chemistry C
• 出版年：2013
• 出版时间：January 17, 2013
• 年：2013
• 卷：117
• 期：2
• 页码：1157-1162
• 全文大小：370K
• 年卷期：v.117,no.2(January 17, 2013)
• ISSN：1932-7455

文摘

Surfactants are needed to create stable suspensions of carbon nanotubes. Increasingly, these surfactants are given additional functionalities, resulting in bigger and more complex molecules with several subunits. We investigate the effect of assembly of these subunits for a class of perylene-based functional surfactants. The subunits that all surfactants are based on are a perylene core, hydrophilic polyglycerol dendrons, and alkyl chains of different orientations and lengths. The assembly of these subunits affects both the molecules' performance as a surfactant and the efficiency of the energy-transfer complexes formed by the nanotube and surfactant through a 蟺鈥撓€ stacking mechanism. This results in a best practice guide for designing functional surfactants with 蟺鈥撓€ stacking cores, and affords more general insights that are applicable to non 蟺鈥撓€ stacking systems as well.