Statistical Raman Spectroscopy: An Method for the Characterization of Covalently Functionalized Single-Walled Carbon Nanotubes

摘要

Covalent chemical functionalization of single-walled carbon nanotubes (SWCNTs) has become a very important subject within the field of carbon allotrope research. It allows a number of intrinsic hurdles to be overcome, such as aggregation, low solubility, and difficult processability, which impede a straightforward development of SWCNTs as building blocks in high-performance materials. Chemical functionalization offers the opportunity to combine their unprecedented properties with those of other compound classes and it is a promising approach for separation by electronic properties. A number of reactions have been reported that show preferential attack of addends to either metallic or semiconducting tubes. We have recently demonstrated a selective carboxylation of semiconducting tubes that were exfoliated and reduced under modified Birch conditions.