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Effect of Surfactant Structure on Carbon Nanotube Sidewall Adsorption

✍ Scribed by Antonello Di Crescenzo; Raimondo Germani; Elisa Del Canto; Silvia Giordani; Gianfranco Savelli; Antonella Fontana

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
452 KB
Volume
2011
Category
Article
ISSN
1434-193X

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✦ Synopsis

Abstract

One conventional and two related gemini surfactants have been used for the preparation of stable single‐walled carbon nanotube (SWNT) aqueous dispersions. The surfactants investigated are able to disperse SWNTs at surfactant/carbon nanotube weight ratios far lower than widely used conventional surfactants. The gemini surfactants investigated demonstrated the ability to solubilize a larger amount of SWNTs with respect to the related single‐tailed surfactant at concentrations far lower than their critical micellar concentrations. Their selectivity towards semiconducting SWNTs with large diameters was inferred from radial breathing mode Raman data.

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