3,5-ジクロロフェノールと界面活性剤共存下におけるアルミニウム(III)-8-ヒドロキシキノリン錯体の蛍光特性

概要

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The enhancing effect of 3,5-dichlorophenol on the fluorescence intensities of the Al(III)-8-hydroxyquinoline complex in a surfactant micelle was investigated. To examine the enhancement mechanism, the fluorescence properties of the Al(III)-8-hydroxyquinoline complex in surfactant micelle containing 3,5-dichlorophenol were measured by a fluorescence-lifetime instrument. The radiationless transition-rate constant (k_q) decreased compared with kq in a surfactant solution without 3,5-dichlorophenol. This result indicated that Al(III)-8-hydroxyquinoline complex can be protected from the bulk water as a quencher by using 3,5-dichlorophenol through hydrogen bonding. A nonionic surfactant micelle was separated as an organic phase from an aqueous phase above the cloud point. Therefore, Triton X-100 of the non-ionic surfactant was used as an extraction solvent for the Al(III)-8-hydroxyquinoline complex in the presence of 3,5-dichlorophenol. As a result, dichlorophenol enhanced the fluorescence intensity of the Al(III)-8-hydroxyquinoline complex in the Triton X-100 phase. The relationship between the 3,5-dichlorophenol concentration and the fluorescence intensities of the Al(III)-8-hydroxyquinoline complex in the surfactant phase was studied.
1999-08-05