title: Hetero diels-alder chemistry for the functionalization of single-walled carbon nanotubes with cyclopentadienyl end-capped polymer strands.
abstract: Single-walled carbon nanotubes (SWCNTs) are pre-functionalized with a pyridinyl-based dithioester to undergo a hetero Diels-Alder (HDA) reaction with cyclopentadienyl end-capped poly(methyl)methacrylate (Mn = 2700 g mol(-1) , PDI = 1.14). Fourier transform infrared spectroscopy, thermogravimetric analysis, elemental analysis (EA), and X-ray photoelectron spectroscopy (XPS) evidence the success of the grafting process. The estimated resulting grafting density (from XPS and EA) via the HDA reaction increases by a factor of more than two (0.0774 chains·nm(-2) via XPS) compared with typical values obtained via a direct cyclopentadiene driven Diels-Alder conjugation onto non-functional SWCNTs under similar conditions.
authors.affiliation: Preparative Macromolecular Chemistry, Institut für Technische Chemie und Polymerchemie, Karlsruhe Institute of Technology (KIT), Engesserstr. 18, 76128 Karlsruhe, Germany.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Zydziak
authors.forename: Corinna M
authors.initials: CM
authors.lastname: Preuss
authors.forename: Volker
authors.initials: V
authors.lastname: Winkler
authors.forename: Michael
authors.initials: M
authors.lastname: Bruns
authors.forename: Christof
authors.initials: C
authors.lastname: Hübner
authors.forename: Christopher
authors.initials: C
authors.lastname: Barner-Kowollik
mesh_terms: D061565:Cycloaddition Reaction; D003517:Cyclopentanes / Q000737:chemistry*; D004951:Esterification; D037742:Nanotubes, Carbon / Q000737:chemistry*; D010084:Oxidation-Reduction; D019904:Polymethyl Methacrylate / Q000737:chemistry*; D011725:Pyridines / Q000737:chemistry; D013438:Sulfhydryl Compounds / Q000737:chemistry
chemical_list: D003517:Cyclopentanes; D037742:Nanotubes, Carbon; D011725:Pyridines; D013438:Sulfhydryl Compounds; D019904:Polymethyl Methacrylate; C023666:pyridine