abstract |
The invention concerns an aqueous composition comprising carbon nanotubes and a surfactant, characterized in that the carbon nanotubes are single-wall hydrophobic nanotubes and in that the surfactant is chosen among electropolymerizable surfactant monomers of formula (I): n n X-Y-Z (I) n nwherein: nX is an electropolymerizable moiety selected from the group consisting of pyrrole, acetylene, phenol, aniline, thiophene, carbazole, indole and azulene nY is a hydrophobic hydrocarbon chain and nZ is a polar group selected from the group consisting of quaternary ammonium salts, alkylphosphonates and sulfonates. n The invention also relates to a method for the preparation of an aqueous composition as described above, comprising the following steps: ni) solubilisation of the surfactant monomer nii) addition of the single-wall carbon nanotubes in the aqueous solution comprising said surfactant monomer, n(iii) sonication of the resulting solution, and, optionally n(iv) addition of a protein. |