Search results: DC.title:Aryl-extended AND DC.title:calix[4]pyrrole AND DC.title:receptors AND DC.title:with AND DC.title:metal AND DC.title:centers: AND DC.title:organometallic AND DC.title:receptors AND DC.title:and AND DC.title:metallo-macrocycles AND DC.title:based AND DC.title:on AND DC.title:coordination AND DC.title:bonds