Popis: |
The roots of synthetic molecular recognition and supramolecular chemistry itself lie in the investigation of organic ligands for metal cations, and the amount of research done in this field is overwhelming. For a long time, however, far less interest has been focussed on the complexation of anions even if the primal strategies were comparable, and only in recent years have the advances made been increasingly dynamic. In particular receptor molecules for biorelevant species such as amino acids and nucleotides are primary research targets, not least for their potential applications in medicine. In this article the developments which have been made here so far will be summarized and the attentive reader might notice that most of the primary literature cited is less than five years old. The emphasis has not been laid upon structural characteristics or synthetic strategies but rather on the effects the new host molecules give rise to and the functions they may have. |