There were designed and developed molecular machines able to perform movements as a result of external stimuli. In particular, using compartmental systems containing two adjacent sites of coordination, in which two identical or different metals may interact through connected oxygen atoms, you can move a metal ion between sites to create movement on the basis of changes in external conditions (changes in pH, solvents, transmetallation etc.). Systems of this type can have any type of property: optical (luminescent probes), magnetic (ferromagnetic probes), activation and catalysis (including bi-metal catalysts supported on the surface) and can recognize selectively neutral or charged species (molecular probes). There were then prepared devices highly efficient and selective on molecular or supramolecular base.
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