Systematic study of interaction of the neutral form of anilines with undecylcalix[4]resorcinarene derivatives by means of potentiometry
Résumé
The elucidation of the mechanism of potentiometric signals generation by liquid membrane electrodes incorporating undecylcalix[4]resorcinarene derivatives upon stimulation by uncharged aniline derivatives is the main aim of the research presented. A series of molecules which play the role of host and guests in the molecular recognition process which occurring at the aqueous / organic membrane interface were explored. It was proved that in the conditions where all aniline derivatives exist as uncharged molecules, cationic potentiometric signals were observed for all undecylcalix[4]resorcinarene liquid membrane electrodes. The main parameters crucial for this phenomenon are the acidity / basicity of the hosts as well as the guests. The lipophilicity of the guests plays a secondary role.
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