A bisphosphate-bridged tetrahomodioxacalix[6]arene with a C2v symmetry at the ambient temperature was obtained by the reaction of tetrahomodioxacalix[6]arene wi
Reacting calix[6]arene hexaesters with poly(ethyleneimine), a series of calix [6]amides- based polymers were obtained for the first time.It is found that they s