Studies on Cation Recognition Properties of 7-Methoxy-4-methene-coumarin-monoaza-18-crown-6

Abstract

Abstract: The cation recognition properties of the title luminescent ionophore MMC-MAC(O₅) in acetonitrile and aqueous solution by the normal fluorescence or delayed fluorescence methods were studied and the corresponding association constants of complexes and the recognition sensitive factors were determined by the modified H Bequation.The recognition mechanism between MMC-MAC(O₅) and metal ion was discussed based on the chemical structure of MMC-MAC(O₅) and the fluorescence enhancement effect.Because the carbonyl group of the coumarin participates to the recognition process between the crown ether and the cation, the association constants of the complexes with alkali cations were increased obviously

Key words: 7-Methoxy-4-methene-coumarin-monoaza-18-crown-6, Cation recognition, Association constant, Mechanism

CLC Number:

O657.3

TrendMD:

LI Long-Di, WU Ying-Guang, ZHANG Zhong-Xiao, TONG Ai-Jun. Studies on Cation Recognition Properties of 7-Methoxy-4-methene-coumarin-monoaza-18-crown-6[J]. Chem. J. Chinese Universities, 2000, 21(12): 1824.

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Studies on Cation Recognition Properties of 7-Methoxy-4-methene-coumarin-monoaza-18-crown-6

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