title: Resonance Raman Optical Activity Spectra of Single-Walled Carbon Nanotube Enantiomers.
abstract: We present experimental Raman optical activity (ROA) spectra of enantio-enriched single-walled carbon nanotubes (SWCNTs). Enantiomeric samples of (6,5) SWCNTs were prepared using nonlinear density gradient ultracentrifugation (DGU). Upon excitation at 2.33 eV, remarkably strong G-band signals are obtained due to strong resonance enhancement with the E22(S) transition of (6,5) SWCNTs. Enhancement allows measuring the vibrational optical activity (VOA) at unusually low concentrations. The obtained results are in good agreement with the single-excited-state theory (SES). To our knowledge, these are the first experimental VOA spectra of SWCNTs.
authors.affiliation: Département de chimie physique, Université de Genève , Quai Ernest-Ansermet, CH-1211 Genève 4, Suisse.
authors.forename: Martin
authors.initials: M
authors.lastname: Magg
authors.affiliation: Department of Chemistry, Rice University , 6100 Main Street, Houston, Texas 77005, United States.
authors.forename: Yara
authors.initials: Y
authors.lastname: Kadria-Vili
authors.affiliation: Département de chimie physique, Université de Genève , Quai Ernest-Ansermet, CH-1211 Genève 4, Suisse.
authors.forename: Patric
authors.initials: P
authors.lastname: Oulevey
authors.affiliation: Department of Chemistry, Rice University , 6100 Main Street, Houston, Texas 77005, United States.
authors.forename: R Bruce
authors.initials: RB
authors.lastname: Weisman
authors.affiliation: Département de chimie physique, Université de Genève , Quai Ernest-Ansermet, CH-1211 Genève 4, Suisse.
authors.forename: Thomas
authors.initials: T
authors.lastname: Bürgi
mesh_terms: D037742:Nanotubes, Carbon / Q000737:chemistry*; D020358:Sodium Cholate; D012967:Sodium Dodecyl Sulfate; D013059:Spectrum Analysis, Raman; D013237:Stereoisomerism
chemical_list: D037742:Nanotubes, Carbon; D012967:Sodium Dodecyl Sulfate; D020358:Sodium Cholate