Journal or Book Title
When two guest molecules co-occupy a binding pocket of a water-soluble host, the first guest could be used as a signal molecule to turn on the binding of the second. This type of molecularly responsive binding strongly depends on the size of the two guests and the location of the signal molecule.
American Chemical Society
Awino, Joseph K.; Hu, Lan; and Zhao, Yan, "Molecularly Responsive Binding through Co-occupation of Binding Space: A Lock–Key Story" (2016). Chemistry Publications. 1019.