SEARCH Articles Figures Tables Copper cation recognition Designed Heterocycles for Supramolecular Cation Recognition Electrochemical Recognition of Cations Electrochemical recognition cations Heterocycles, cation recognition Recognition Based on Cation Control of Photoinduced Electron Transfer in Nonconjugated Donor-Acceptor Systems Recognition cationic Recognition metal cations Spherical Recognition — Cryptates of Metal Cations