Hydroxide Ions Stabilize Open Carbon Nanotubes in Degassed Water Auteur(s): Bepete George, Izard N., Torres-Canas F. J., Derre Alain, Sbardelotto Arthur, Anglaret E., Penicaud Alain, Drummond Carlos (Article) Publié: Acs Nano, vol. 12 p.8606-8615 (2018) Ref HAL: hal-01925245_v1 DOI: 10.1021/acsnano.8b04341 WoS: WOS:000443525600114 Exporter : BibTex | endNote 3 Citations Résumé: The main hurdle preventing the widespread useof single-walled carbon nanotubes remains the lack ofmethods with which to produce formulations of pristine,unshortened, unfunctionalized, individualized single-walledcarbon nanotubes, thus preserving their extraordinary properties.In particular, sonication leads to shortening, which isdetrimental to percolation properties (electrical, thermal,mechanical, etc.). Using reductive dissolution and transfer intodegassed water, open-ended, water-filled nanotubes can bedispersed as individualized nanotubes in water−dimethylsulfoxide mixtures, avoiding the use of sonication andsurfactant. Closed nanotubes, however, aggregate immediately upon contact with water. Photoluminescence andabsorption spectroscopy both point out a very high degree of individualization while retaining lengths of several microns.The resulting transparent conducting films are 1 order of magnitude more conductive than surfactant-based blanks atequal transmittance. |