一种新型黄酮冠醚及其对碱金属和碱土金属离子的配位作用

介绍了一种新型黄酮冠醚(FC)的合成,并研究了这种冠醚与碱金属和碱土金属高氯酸盐发生配位作用时的吸收光谱和荧光光谱的变化,通过不同的处理方法求出了该冠醚与几种离子配位的稳定常数.

A New Flavonecrown Ether and Its Complexation with Alkali and Alkaline Earth Metal Cations

Anew kind of flouroionophore flavonecrown ether(FC)[4'-(dimethylamino)-3,6-(tetraethylene)-flavone was synthesized and characterized. The photophysical changes upon complexation with alkali and alkaline earth metal cations can be described in terms of enchancement of the cation-induced intramolecular charge transfer in the flavone owing to the direct interaction between the bound cations and the carbonyl group of the flavone. The magnitude of the photophysical changes is controlled by the size of crown and charge density of the bound cations. Based on the determination of the stability constants, the selectivity of flavonecrown ether is different from the regular crown ether. The results obtained were discussed preliminarily.