Fig. 2: Chiroptical gas phase spectra of amino acid enantiomers.
From: Amino acid gas phase circular dichroism and implications for the origin of biomolecular asymmetry
a CD spectra of d-alanine (red); l-alanine (blue). Green and purple areas are indicative of the sign of the l-alanine CD spectrum for comparison with other amino acids. b Anisotropy (g) spectra of d-alanine (red) and l-alanine (blue) (thick lines) revealing the %enantiomeric excess (%ee) inducible by either left or right circularly polarized light at the extent of reaction ξ = 0.9999 (dotted lines). c Anisotropy spectra (g) of seven l-amino acids. Green/purple color and brightness indicate negative/positive and magnitude, respectively, of g values. Source data of CD and g spectra are provided for all amino acid enantiomers as a Source Data file.
