fig16

Figure 16. (A) Structure of cage C18 and anion guests 51-53; (B) crystal structures of [51⊂C18]^3- showing a racemic mixture of (left) P-helical and (right) M-helical complexes; (C) schematic representation of guest-induced conformational adaption and gear-like chirality transmission in the adaptive molecular cage; and (D) CD spectra of cage C18 upon addition of different amounts of chiral guests 52 and 53. The UV-Vis spectrum of cage C18 was shown in the bottom. CD: Crcular dichroism; UV-Vis: ultraviolet-visible.