Host Guest Interactions
See also: Host-guest chemistryCalixarenes are efficient sodium ionophores and are applied as such in chemical sensors. With the right chemistry these molecules exhibit great selectivity towards other cations. Calixarenes are used in commercial applications as sodium selective electrodes for the measurement of sodium levels in blood. Calixarenes also form complexes with cadmium, lead, lanthanides and actinides. Calixarene and the C70 fullerene in p-xylene form a ball-and-socket supramolecular complex. Calixarenes also form exo-calix ammonium salts with aliphatic amines such as piperidine.
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