fig13
From: Chiral cage materials with tailored functionalities for enantioselective recognition and separation
Figure 13. (A) Synthesis of C15·18Na; (B) the guests that can be recognized by C1518-; (C) partial 1H NMR spectra of the mixture of C15·18Na and L-43; (D) calibration curves of the induced CD signal intensities at 380 nm vs. ee values for nine a-ammonium ester guests; and (E) CD spectra of C15·18Na in presence of chiral guests. NMR: Nuclear magnetic resonance; CD: circular dichroism; ee: enantiomeric excess.
