@article {Chen:2006:1533-4880:1935, author = "Chen, Zheyi and Hauge, Robert H. and Smalley, Richard E.", title = "Ozonolysis of Functionalized Single-Walled Carbon Nanotubes", journal = "Journal of Nanoscience and Nanotechnology", volume = "6", number = "7", year = "2006", abstract = "Room temperature ozonolysis of fluorinated SWNT and phenyl-sulfonated SWNT have been studied in perfluoropolyether (PFPE) solvents. Etching at the end caps (∼70 nm/hour for fluorinated SWNT/PFPE suspension with 1 g/l concentration) has been demonstrated to be the dominating effect during the ozonolysis of fluorinated SWNT. Base on characterization by AFM analysis, X-ray Photoelectron Spectroscopy (XPS) and Raman Spectroscopy, fluorination along the SWNT side-walls protects F-SWNT from extensive functionalization by ozonolysis. An ozone reaction with fluorinated SWNT has been found to improve its solubility in 96% sulfuric acid. This allows oxidative cutting by ammonium peroxydisulfate without defluorination. In comparison to fluorinated SWNT, phenyl-sulfonated SWNT was found to be effectively and homogeneous cut by ozonolysis in a water suspension.", pages = "1935-1938", url = "http://www.ingentaconnect.com/content/asp/jnn/2006/00000006/00000007/art00005", doi = "doi:10.1166/jnn.2006.336", keyword = "OZONOLYSIS, FLUORINATION, PHENYL-SULFONATION, OXIDATIVE CUTTING" }