Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... A new series of receptors for acylamino acid carboxylates has been synthesized and shown to have increased binding affinity for the substrate as the number of hydrogen bonding groups in the cavity increases. ... A new series of receptors for acylamino acid carboxylates has ...