SEARCH Articles Figures Tables Bridged calixarenes calix arene crown Calix arene-crown-5-ether with Calix arenediquinone crown Calix crown ethers Calixarenes calix-crowns Cation interaction with calix arene crown ethers Containing calix-bis-crown compounds Enlarged calix arene crown Ionizable 1,2 crown calix arenes Mono crown calix arenes