Dissolution of full-length single-walled carbon nanotubes

Article Abstract:

Noncovalent (ionic) functionalization of the carboxylic acid groups present in the purified single-walled carbon nanotubes (SWNTs) can assist in solubilizing the full-length SWNTs in common organic solvents. The results of atomic force microscopy (AFM) showed that the majority of the SWNTs ropes were exfoliated into small ropes and individual nanotubes with lengths of several micrometers during the dissolution process.

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Influence of the zeta potential on the dispersability and purification of single-walled carbon nanotubes

Article Abstract:

A systematic study of the purification of nitric acid treated single-walled carbon nanotubes (SWNTs) by centrifugation at a constant pH is reported. It is found that at the lower pH, the carbonaceous impurities (CIMP) has a higher zeta potential than nitric acid treated with SWNTs and it is this factor that allows the separation of the CIMP and the purification of the SWNTs.

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Polyethyleneimine functionalized single-walled carbon nanotubes as a substrate for neuronal growth

Article Abstract:

The synthesis of a single-walled carbon nanotube (SWNT) graft copolymer is reported and was prepared by the functionalization of SWNTs with polyethyleneimine. This graft copolymer, SWNT-PEI, is used as a substrate for cultured neurons and found that it promotes neurite outgrowth and branching.

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