title: Synthesis and characterization of water soluble single-walled carbon nanotube graft copolymers.
abstract: Poly(aminobenzene sulfonic acid) (PABS) and polyethylene glycol (PEG) were covalently attached to single-walled carbon nanotubes (SWNTs) to form water-soluble graft copolymers. Quantitative near-IR (NIR) spectroscopic studies of these SWNT graft copolymers indicate a water solubility of about 5 mg/mL, and atomic force microscopy studies show a fairly uniform length and diameter. On the basis of thermogravimetric analysis, the loading of SWNTs in the graft copolymers is estimated to be 30% for SWNT-PABS and 71% for SWNT-PEG. NIR spectroscopic studies of SWNT-PABS show that this graft copolymer has a ground state that is a hybrid of the electronic structures of the isolated PABS and SWNT macromolecules.
authors.affiliation: Center for Nanoscale Science and Engineering, Department of Chemistry, University of California, Riverside, California 92521-0403, USA.
authors.forename: Bin
authors.initials: B
authors.lastname: Zhao
authors.forename: Hui
authors.initials: H
authors.lastname: Hu
authors.forename: Aiping
authors.initials: A
authors.lastname: Yu
authors.forename: Daniel
authors.initials: D
authors.lastname: Perea
authors.forename: Robert C
authors.initials: RC
authors.lastname: Haddon
mesh_terms: D001557:Benzenesulfonates / Q000138:chemical synthesis / Q000737:chemistry*; D018625:Microscopy, Atomic Force; D037742:Nanotubes, Carbon / Q000737:chemistry*; D011092:Polyethylene Glycols / Q000138:chemical synthesis / Q000737:chemistry*; D012995:Solubility; D019265:Spectroscopy, Near-Infrared; D013818:Thermogravimetry; D014867:Water / Q000737:chemistry
chemical_list: D001557:Benzenesulfonates; D037742:Nanotubes, Carbon; D014867:Water; D011092:Polyethylene Glycols