Organic-inorganic macroion coacervate complexation.

摘要: Coacervate complexes that are liquid–liquid separated complex materials often formed by stoichiometrically mixing oppositely charged polyelectrolytes in salted aqueous solution. Entropy-driven ion pairing, resulting from the release of counterions near polyelectrolytes, has been identified as primary driving force for coacervate formation between including proteins and DNA, In this work we have examined complexation net neutral zwitterionic poly(sulfobetaine methacrylate) (PSBMA) inorganic polyoxometalate (POM) polyanions LiCl solutions. Biphasic liquid-like can be over a much broader range POM-to-PSBMA molar ratio concentration than conventional polyelectrolyte complexation. Composition analysis dried supernatant dense confirmed both PSBMA POM macroions primarily present macroion-rich phase contrast to presence solely macroion-poor phase. The increase charge negativity conductivity suggests stronger binding with anions monovalent Cl−, bound Cl− solution PSBMA–POM coacervates All experimental evidence demonstrated generality ion-pairing induced polymers multivalent nanomaterials. organic could give insights into many supramolecular assembly processes nature also lead new paradigm developing hybrid macroionic emerging applications green catalysis nanomedicine.