Molecular Containers Based on Amphiphilic PS-b-PMVE Dendrigraft Copolymers: Topology, Organization, and Aqueous Solution Properties
| Autor: | Alain Deffieux, Michel Schappacher, Christelle Lefebvre, Jean-Luc Putaux |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
chemistry.chemical_classification
Aqueous solution Hydrodynamic radius Chemistry 02 engineering and technology General Chemistry Methyl vinyl ether Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Biochemistry Lower critical solution temperature Catalysis 0104 chemical sciences chemistry.chemical_compound Colloid and Surface Chemistry Polymer chemistry Amphiphile Copolymer Polystyrene 0210 nano-technology |
| Zdroj: | Journal of the American Chemical Society. 127:2990-2998 |
| ISSN: | 1520-5126 0002-7863 |
| DOI: | 10.1021/ja0440203 |
| Popis: | The synthesis, characteristics, and properties of amphipatic, water-soluble dendrigrafts, with a polystyrene 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 which can self-organize intramolecularly in segregated subdomains forming flowerlike or strings of flowerlike objects. In organic solvents the dendrigrafts behave as fully soluble isolated macromolecules and show in water a low critical solubility temperature (LCST) at t30 degrees C. The ability of the amphiphilic PS-b-PMVE dendrigrafts to complex and transport in water organic (pyrene) and metallo-organic (manganese tetraphenyl porphyrin) molecules is investigated. The possibility to stabilize the high oxidation state of metallo-porphyrin complexes through their encapsulation into the dendrigraft is shown. |
| Databáze: | OpenAIRE |
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