Supramolecularly Engineered Amphiphilic Macromolecules: Molecular Interaction Overrules Packing Parameters. (16th February 2017)

• Record Type: Journal Article
• Authors: Pramanik, Prithankar; Ray, Debes; Aswal, Vinod K.; Ghosh, Suhrit
• Is Part Of: Angewandte Chemie. Volume 129:Number 13(2017)
• Page Start: 3570
• Page End: 3574
• Publication Date: 2017-02-16
• Subjects: Amphiphile Polymere -- Fluoreszenz -- Polymersome -- Supramolekulare Organisation -- Zylindrische Micellen; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201611715
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: We report molecular interaction‐driven self‐assembly of supramolecularly engineered amphiphilic macromolecules (SEAM) containing a single supramolecular structure‐directing unit (SSDU) consisting of an H‐bonding group connected to a naphthalene diimide chromophore. Two such SEAMs, P1‐50 and P2‐50, having the identical chemical structure and hydrophobic/hydrophilic balance, exhibit distinct self‐assembled structures (polymersome and cylindrical micelle, respectively) due to a difference in the H‐bonding group (hydrazide or amide, respectively) of the single SSDU. When mixed together, P1‐50 and P2‐50 adopted self‐sorted assembly. For either series of polymers, variation in the hydrophobic/hydrophilic balance does not alter the morphology reconfirming that self‐assembly is primarily driven by directional molecular interaction which is capable of overruling the existing norms in packing parameter‐dependent morphology control in an immiscibility‐driven block copolymer assembly. Abstract : Amphiphile Blockcopolymere : Eine gerichtete molekulare Wechselwirkung setzt klassische Packungsparameter außer Kraft und steuert in neuer Form die Selbstorganisation von supramolekular entworfenen, amphiphilen Polymeraggregaten. Die Selbstorganisation wird durch ein spezifisches Wasserstoffbrückenmotiv dirigiert, das entlang der ganzen Polymerkette vorhanden ist.