Keto-enol Tautomerism of Dibenzoylmethane in Organized Media

Jiang, Yun-Bao~* Ye, Nong (Department of Chemistry, Xiamen University, Xiamen, 361005)

The keto-enol tautomerism of dibenzoylmethane (DBM) in organized media, e.g. β-cyclodextrin and micelles (ionic and non-ionic), was monitored by ultraviolet absorption spectra. It was observed that the introduction of β-cyclodextrin or the formation of micelle in the DBM aqueous solution made the tautomerism equilibrium favour for enol type. The results indicated that the properties of tautomerism of DBM could be applied to characterize the microenvironment al property of organized media, reveal the structural characteristics of micelle, and determine the critical micelle concentration of surfactant.



Post time: May-19-2021