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Resonance Raman Optical Activity Spectra of Single-Walled Carbon Nanotube Enantiomers

Kadria-Vili, Yara
Weisman, R. Bruce
Published in Journal of Physical Chemistry Letters. 2016, vol. 7, no. 2, p. 221-225
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 E22S 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.
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Research group Groupe Bürgi
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MAGG, Martin et al. Resonance Raman Optical Activity Spectra of Single-Walled Carbon Nanotube Enantiomers. In: Journal of Physical Chemistry Letters, 2016, vol. 7, n° 2, p. 221-225. doi: 10.1021/acs.jpclett.5b02612 https://archive-ouverte.unige.ch/unige:94062

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Deposited on : 2017-05-09

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