Photo, proton and metal ion responsive wide-rim acridane substituted calix[4]arenes
作者:L. Grubert、H. Hennig、W. Abraham
DOI:10.1016/j.tet.2009.05.082
日期:2009.8
Calix[4]arenesbearing acridinium and acridane substituents at the wide rim and a short glycol chain and two OH-groups at the narrow rim have been prepared. The interaction with alkali metalions can be identified with the naked eye by the change in solution color arising from deprotonation of the OH-groups. Unlike the acridane calixarenes, the acridinium-substituted calixarene-crown-4 binds sodium