Figure 11.

a) The framework of MAF‐2 with large cages (large yellow spheres) interconnected by small windows (green columns). The window size is kinetically controlled by the rotation/swing motions of the pendant ethyl groups. b−e) A perspective view of four representative channel states: double closed, double open, closed‐open, and open‐closed (the ethyl groups are colored in red and green to highlight the two different gates). Adapted with permission.143 Copyright 2008, American Chemical Society.