[NanoIntergris] IsoSol-S100® Polymer-Wrapped Nanotubes
IsoSol-S100 SWNTs
1mg Aromatic Solution
1mg Thick Film
| Optical Purity | >99.9% |
| Itkis Ratio (Ї) | >0.5 |
| Phi Value (Φ) | >0.39 |
| Nanotube Concentration | >0.01mg/mL |
| Surfactant : Nanotube Concentration | <4 |
| Standard Solvent Media | Toluene |
| Shelf Life | 3-6 months |
The use of truly scalable and patent-pending technology developed by the National Research Council of Canada, within the Printable Electronics Program, has enabled us to disperse and extract single-walled carbon nanotubes to the highest levels of semiconducting enrichment and purity to date: IsoSol-S100. The starting materials are the purified and highly-scalable RF-plasma grown carbon nanotube supplied by Raymor Nanotech1.
Experimentally, thin film transistors have been prepared from the IsoSol-S100 material on SiO2/Si substrates7, leading to average mobilities exceeding 27cm2/(Vs) and On/Off ratios of 1.8×106. These properties allow the material to be well-suited for ink jet and aerosol jet printing. Haitian Chen from USC says: “Our research group has been able to obtain excellent electrical properties, more specifically mobility of 25 cm2V-1s-1 and current on/off ratio of 4 x 10^6 from thin film transistors (TFTs) based on Nanointegris 99.9% semiconducting carbon nanotube (CNT) solution (IsoSol-S100). It is an outstanding material for the development of CNT-based macroelectronics and flexible macroelectronics. ”
UV-Vis-NIR spectrophotometric assessment of purity2 indicate that this material has semiconducting purities at or greater than 99.9% with the metrics of Itkis Ratio3 and Phi Values4exceeding 0.5 and 0.4, respectively.
The highly graphitized starting material and low sonication intensity utilized for the extraction technique minimizes damage to the nanotubes, allowing the material to exhibit high crysallinity and longer average lengths of 1-2µm, not previously seen when utilizing DGU5 or Chromatography-based6 separation methods.
Additionally, the material is processed in organic solvent with a polymer : nanotube ratio that can be adjusted to less than a factor of four (surfactant : nanotube ratio is 1×103 in our aqueous surfactant solutions). The solutions also display stabilities of greater than six months. These properties promote great nanotube deposition and adhesion for device creation.