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À propos de : Molecular Containers Based on Amphiphilic PS-b-PMVEDendrigraft Copolymers: Topology, Organization, andAqueous Solution Properties        

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  • Molecular Containers Based on Amphiphilic PS-b-PMVEDendrigraft Copolymers: Topology, Organization, andAqueous Solution Properties
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  • The synthesis, characteristics, and properties of amphipatic, water-soluble dendrigrafts, with apolystyrene core and polystyrene-b-poly(methyl vinyl ether) (PS-b-PMVE) diblock as external branches,are described. The dendrigrafts are observed by AFM and TEM as egglike or long cylindrical objects whichcan self-organize intramolecularly in segregated subdomains forming flowerlike or strings of flowerlikeobjects. In organic solvents the dendrigrafts behave as fully soluble isolated macromolecules and show inwater a low critical solubility temperature (LCST) at t> 30 °C. The ability of the amphiphilic PS-b-PMVEdendrigrafts to complex and transport in water organic (pyrene) and metallo-organic (manganese tetraphenylporphyrin) molecules is investigated. The possibility to stabilize the high oxidation state of metallo-porphyrincomplexes through their encapsulation into the dendrigraft is shown.
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