摘要:
Receptors ferrocene-triazole-pyridine triads assembled with Zn(II) or Cd(II) metal cations behave as chemosensor molecules for HSO4- anions through electrochemical and optical channels: the redox peak of the ferrocene/ferrocenium redox couple is shifted cathodically by 72-53 mV, and a new absorption band appeared in the UV-vis spectrum upon complexation with the HSO4- anion. Association constants, detection limits and stoichiometries of the recognition processes have been determined, whereas H-1 NMR experiments and density functional theory calculations are used to suggest the plausible binding mode taking place in the new supramolecular assembly formed.