title: Facile synthesis of highly water-soluble fullerenes more than half-covered by hydroxyl groups.
abstract: Using a novel hydrogen peroxide heating method, we synthesized milky white, water-soluble polyhydroxylated fullerenes (fullerenols) with 36-40 hydroxyl groups (estimated average) along with 8-9 secondary bound water molecules. The fullerenols exhibited high water solubility up to 58.9 mg/mL in a neutral (pH = 7) condition. Dynamic light scattering analysis showed a high dispersion property, to give a narrow particle size distribution within 0.7-2.0 nm.
authors.affiliation: Division of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan. kokubo@chem.eng.osaka-u.ac.jp
authors.forename: Ken
authors.initials: K
authors.lastname: Kokubo
authors.forename: Kenji
authors.initials: K
authors.lastname: Matsubayashi
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Tategaki
authors.forename: Hiroya
authors.initials: H
authors.lastname: Takada
authors.forename: Takumi
authors.initials: T
authors.lastname: Oshima
mesh_terms: D000042:Absorption; D003460:Crystallization / Q000379:methods*; D037741:Fullerenes / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry*; D017665:Hydroxyl Radical; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D012995:Solubility; D013499:Surface Properties; D014867:Water / Q000737:chemistry*
chemical_list: D037741:Fullerenes; D046911:Macromolecular Substances; D014867:Water; D017665:Hydroxyl Radical; D006861:Hydrogen Peroxide