“…Because of of its small size, neither the macroscopic properties can be observed nor its existence can be proved by microscopic or scattering methods. The special properties of APCNs in combination with their large chemical and structural variety have inspired an array of different application-oriented studies in chemical, biological, and medical fields, such as nanoreactors, , catalysis, solid-phase extractions, pervaporation matrices, promoted release hosts, medical implants and immonoisolators, cell culture and antifoulding surfaces, drug delivery matrices, contact lenses, tissue engineering scaffolds, , enzymatic catalysis supports, sensors, etc.…”