Experimental and theoretical study on the supramolecular complexes of 15-crown-5 with adrenaline.

The electron transfer properties of supramolecular complexes of 15-crown-5 (15C5) with protonated adrenaline (PAd(+)) at different electrodes using cyclic voltammetry (CV) have been investigated in the article. The experimental results show that 15C5 will affect the electron transfer properties of adrenaline. The formed supramolecular complexes by ion-dipole and hydrogen bond interaction between PAd(+) and 15C5 will slow down the diffusion ability of adrenaline and make it hard to donate electron and be oxidized. The interaction energies and NPA calculations for the supramolecular complexes of 15C5 with PAd(+) at B3LYP/6-31+G(d) level have been performed. The calculational results confirm the experimental fact that 15C5 can form stable supramolecular complexes with PAd(+).

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