Abstract: The enhancing fluorescence action of Schiff's bases containing double aromatic guests using water soluble β-cyclodextrin cross-linking polymer was studied in this paper.It was found that the distance between the two aromatic guests would be an important factor for enhancing fluorescence action. The ability of molecular fluorescence emission would be only enhanced when there was three or four atoms between two aromatic guests. This steric selectivity showed that the β-CDpolymer would be possible to become a novel method for flourimetric molecular recognition of Schiff's bases containing double aromatic groups.

Key words: β-Cyclodextrin cross-linking polymer, Diaryl Schiff base, Molecular fluorimetric recognition