Skip to main content

Enhanced Solubility and Covalent Functionalisation of Single Walled Carbon Nanotubes via Atmospheric Pressure Microwave Reflux and the Subsequent Spray Coating of Transparent Conducting Thin Films

Buy Article:

$63.00 plus tax (Refund Policy)

Abstract:

High levels of covalently functionalised single walled carbon nanotubes (SWCNT) have been produced using a rapid atmospheric pressure microwave reflux in a 1:1 mix of concentrated nitric and sulphuric acids. The resulting product shows high solubility (0.74 mg/ml at pH 11) and also displays a maximum solubility dependency based on the pH of the solution. The presence of sulphone and sulphonate functional groups has been shown using EDXA, TGA and IR analysis. The structural and electronic characteristics of the nanotubes were monitored using Raman spectroscopy and SEM imaging. Spray coating was used to form transparent conducting thin films from the functionalised nanotubes. The films demonstrated sheet resistances from 300 Ω / and a 25-85% optical transmission at 800 nm. This method provides a fast and effective route to the formation of conductive nanotube thin-films without the need for surfactant stabilisation of the solution. In addition the functionalisation was shown to be a fully reversible process sensitive to thermal treatment. Film formation removed the nanotube functionalisation and restored the pristine nanotube structure.





Keywords: Conducting; Film; Functionalisation; Microwave; Nanotubes; Solubility

Document Type: Research Article

DOI: https://doi.org/10.2174/157341310791171117

Publication date: 2010-06-01

More about this publication?
  • Current Nanoscience publishes authoritative reviews and original research reports, written by experts in the field on all the most recent advances in nanoscience and nanotechnology. All aspects of the field are represented including nano- structures, synthesis, properties, assembly and devices. Applications of nanoscience in biotechnology, medicine, pharmaceuticals, physics, material science and electronics are also covered. The journal is essential to all involved in nanoscience and its applied areas.
  • Access Key
  • Free ContentFree content
  • Partial Free ContentPartial Free content
  • New ContentNew content
  • Open Access ContentOpen access content
  • Partial Open Access ContentPartial Open access content
  • Subscribed ContentSubscribed content
  • Partial Subscribed ContentPartial Subscribed content
  • Free Trial ContentFree trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more