D. Monti et al., Effect of the inclusion of sodium cations on the binding properties of a switchable diporphyrin receptor, NEW J CHEM, 25(6), 2001, pp. 780-782
The nestling of Na+ within the oligooxaethylene frame of the switchable dip
orphyrin receptor 1Zn results in an allosteric effect on the binding of dit
opic amines, and remarkably influences the ligand-induced chiroptic propert
ies of the assembly upon inclusion of chiral ditopic guests.