Solubilization of single-walled carbon nanotubes with diamine-terminated oligomeric poly(ethylene glycol) in different functionalization reactions

A comparative study is reported on the solubilization of as-prepared and purified single-walled carbon nanotubes with diamine-terminated oligomeric poly(ethylene glycol) in different functionalization reactions under various conditions. The soluble nanotube samples were characterized by using spectroscopic, microscopic, and gravimetric techniques. The results were used in the evaluation of the functionalization reactions.