Dialytic Separation of Bundled, Functionalized Carbon Nanotubes from Carbonaceous Impurities

Crystals

J. Justin Mulvey²  Evan N. Feinberg²  Michael R. McDevitt¹  David A. Scheinberg² 

[1]Departments of Radiology and Medicine, Memorial Sloan-Kettering Cancer Center, 408 East 69th, ZRC 1941, New York, NY 10021, USA

[2] E-Mail:

[3]Molecular Pharmacology and Chemistry Program, Memorial Sloan-Kettering Cancer Center,1275 York Avenue, New York, NY 10065, USA

[4] E-Mails:

关键词: nanotube;    C₆₀;    dialysis;    amorphous carbon;    graphitic carbon;    purification;    functionalization;    bundling;   

DOI  :  10.3390/cryst4040450

来源: mdpi

【 摘 要 】

Separating functionalized single-wall carbon nanotubes (SWCNTs) from functionalized amorphous carbon is challenging, due to their polydispersity and similar physicochemical properties. We describe a single-step, dialytic separation method that takes advantage of the ability of heavily functionalized SWCNTs to bundle in a polar environment while maintaining their solubility. Experiments on functionalized SWCNTs were compared with functionalized, C₆₀ fullerenes (buckyballs) to probe the general applicability of the method and further characterize the bundling process. This approach may simultaneously be used to purify a functionalization reaction mixture of unreacted small molecules and of residual solvents, such as dimethylformamide.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.