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  • Title: Chirality discrimination at the carvone air/liquid interfaces detected by heterodyne-detected sum frequency generation.
    Author: Wang Y, Du J, Ma X, Wang H, Chou KC, Li Q.
    Journal: Heliyon; 2019 Dec; 5(12):e03061. PubMed ID: 31890974.
    Abstract:
    The chiral signal of the carvone air/liquid interface is probed by heterodyne-detected sum frequency generation (HD-SFG) without the electronic resonance. The chiral SFG spectra exhibit two distinguishable spectral signatures. Four chiral vibrational peaks of the R- and S-carvone molecules are with opposite signs, which can directly determine the surface molecular chirality. Two achiral vibrational peaks are also observed with the same sign. The different spectral signatures can provide a detailed chirality characterization at the molecular interface.
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