Preparation of Soluble Chitosan Modified Single-Walled Carbon Nanotubes

Functionalized carbon nanotubes hold a lot of promise application in many research fields. We covalently linked octadecylamine and chitosan to single-walled carbon nanotubes by a double functionalization method. The functionalized single-walled carbon nanotubes have substantial solubility in organic solutions such as dichloromethane, chloroform or toluene, etc. Fourier transform infrared spectroscopy, Raman spectroscopy, thermogravimetric analysis and transmission electron microscopy were used to analyze the samples, showing an attachment of octadecylamine and chitosan to carbon nanotubes, and end-to-side or end-to-end interconnections among nanotubes.