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Effect of Surfactant Structure on Carbon Nanotube Sidewall Adsorption
Author(s) -
Di Crescenzo Antonello,
Germani Raimondo,
Del Canto Elisa,
Giordani Silvia,
Savelli Gianfranco,
Fontana Antonella
Publication year - 2011
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/ejoc.201100720
Subject(s) - carbon nanotube , pulmonary surfactant , chemistry , adsorption , raman spectroscopy , aqueous solution , chemical engineering , nanotube , solubilization , selectivity , nanotechnology , organic chemistry , materials science , biochemistry , physics , optics , engineering , catalysis
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.