Main > NANOTECHNOLOGY > Electronics > Carbon NanoTubes. > Single-Walled C NanoTube (SWNT) > Sepn. By Chirality > Co. Org.: KR. USA. SS. (Research) > Method Description

---

In theory, metallic and semiconducting SWNTs should interact differently with certain functional groups. Researchers reasoned they could simultaneously sort nanotubes by chirality and make thin-film transistors by adding functional group coatings to the surface of silicon substrates and then applying the SWNTs via spin coating. They found that semiconducting nanotubes preferentially cling to substrates with a coating of primary amines, while metallic SWNTs hold fast to substrates functionalized with phenyl groups. The spin coating process flings away the nonsticking type of nanotube.

From a typical SWNT blend, team was able to make transistors enriched with 90–95% of the nanotubes of desired chirality. "The method we ve developed could be very useful for developing low-cost transparent electrodes for large-area displays and solar panels or as a means of sorting nanotubes for other applications



Method Description's products
This section has no products