PlumX Metrics
Embed PlumX Metrics

Thermoresponsive nanoassemblies: Layer-by-layer assembly of hydrophilic-hydrophobic alternating copolymers

Macromolecules, ISSN: 0024-9297, Vol: 38, Issue: 8, Page: 3414-3419
2005
  • 64
    Citations
  • 0
    Usage
  • 43
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    64
    • Citation Indexes
      64
  • Captures
    43

Article Description

Multilayer films were assembled using the sequential alternate adsorption of a hydrophilic-hydrophobic copolymer, poly(styrene-alt-maleic acid) (PSMA), and poly(ethylene oxide) (PEO). The film buildup was followed using quartz crystal microgravimetry, and it was demonstrated that the incorporation of 0.2 M sodium chloride into the adsorption solution increased the adsorbed amount by a factor of approximately 2. Ten bilayer films of PSMA/PEO were shown to have a thickness of approximately 200-500 nm, depending on the specific adsorption conditions used. The surface roughness of the films was examined using scanning force microscopy and shown to be dependent on both the adsorption conditions used and the terminal layer of the assembly. Films prepared at higher ionic strength had a rougher surface, and films terminated with PSMA were rougher than those terminated with PEO. The films were shown to have a strong affinity for Rhodamine B, with the dye concentration in the film exceeding that in the adjacent solution by a factor of approximately 7.3 × 10. The absorbed dye was then released by elevating the temperature of the film, with the release rate dependent on the temperature of the release solution. The inclusion of the hydrophobic domains was shown to have a strong influence on the thermoresponsive behavior of the assemblies. © 2005 American Chemical Society.

Bibliographic Details

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know