The supramolecular recognitions of α-amino acid,anion,aromatic acid and small peptides have been investigated by UV-visible spectrometric titration in this paper.The results indicated that the host compounds form 1:1 or 1:2 supramolecular complexes with the guests.The impetuses of the supramolecular recognitions are mainly the hydrogen bond and electrostatic force.The space structure is also a important effect factor.
