The complexation of flavone derivatives with alkali and alkaline earth metal cations studied by spectroscopic methods
作者:Huaping Li、Hongzhi Xie、Penfei Wang、Shikang Wu
DOI:10.1039/a904825a
日期:——
A new kind of fluoroionophore, typified by flavone quasi-crown ether [4′-(dimethylamino)-3,6-(tetraethylene glycol)flavone] and flavone lariat-crown ether, were synthesized and characterized. The photophysical changes upon complexation with alkali and alkalineearthmetal cations are explained in terms of the enhancement of a cation-induced intramolecular charge transfer process, which results from