{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,2]],"date-time":"2026-10-02T09:00:25Z","timestamp":1790931625113,"version":"4.1.0"},"reference-count":42,"publisher":"National Academy of Sciences","issue":"20","content-domain":{"domain":["www.pnas.org"],"crossmark-restriction":true},"short-container-title":["Proc. Natl. Acad. Sci. U.S.A."],"published-print":{"date-parts":[[2009,5,19]]},"abstract":"<jats:p>Constitutional self-instructed membranes were developed and used for mimicking the adaptive structural functionality of natural ion-channel systems. These membranes are based on dynamic hybrid materials in which the functional self-organized macrocycles are reversibly connected with the inorganic silica through hydrophobic noncovalent interactions. Supramolecular columnar ion-channel architectures can be generated by reversible confinement within scaffolding hydrophobic silica mesopores. They can be structurally determined by using X-ray diffraction and morphologically tuned by alkali-salts templating. From the conceptual point of view, these membranes express a synergistic adaptive behavior: the simultaneous binding of the fittest cation and its anion would be a case of \u201chomotropic allosteric interactions,\u201d because in time it increases the transport efficiency of the pore-contained superstructures by a selective evolving process toward the fittest ion channel. The hybrid membranes presented here represent dynamic constitutional systems evolving over time to form the fittest ion channels from a library of molecular and supramolecular components, or selecting the fittest ion pairs from a mixture of salts demonstrating flexible adaptation.<\/jats:p>","DOI":"10.1073\/pnas.0813257106","type":"journal-article","created":{"date-parts":[[2009,4,29]],"date-time":"2009-04-29T22:05:23Z","timestamp":1241042723000},"page":"8117-8122","update-policy":"https:\/\/doi.org\/10.1073\/pnas.cm10313","source":"Crossref","is-referenced-by-count":98,"title":["Dynamic hybrid materials for constitutional self-instructed membranes"],"prefix":"10.1073","volume":"106","author":[{"given":"Adinela","family":"Cazacu","sequence":"first","affiliation":[{"name":"Institut Europ\u00e9en des Membranes, Adaptive Supramolecular Nanosystems Group, Ecole Nationale Superieure de Chimie, Unit\u00e9 Mixte de Recherche 5635, Centre National de la Recherche Scientifique, University of 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