Thermo-Responsive Films Based Upon Diels-Alder Chemistry and Block Copolymer Phase Separation

Abstract

The surface properties of poly(ethylene glycol) (PEG) films have been modified using gold particles functionalized with block copolymer-based ligands of poly(styrene) (PS) and PEG. The ligands were synthesized using Diels-Alder chemistry to join the PS and PEG blocks into linear diblock copolymers, which were attached to gold particles with a thiol terminal functionality on the PS block. The block copolymer ligands compatibilized the Au particles by creating a PEG shell around the Au and PS core. The Diels-Alder linkage, however, is temperature sensitive, and by annealing the films at 90 C, the PEG blocks of the ligand were separated from the PS-functionalized Au core. The Au particles were thus rendered immiscible in the PEG matrices and migrated to the film surfaces.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2007
Accession Number
ADA469946

Entities

People

  • Frederick L Beyer
  • J. D. Demaree
  • Philip J. Costanzo

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Biomedical
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Alkenes
  • Block Copolymers
  • Chemical Synthesis
  • Chemistry
  • Copolymers
  • Ethylene Glycol
  • Ethylenes
  • Liquid Chromatography
  • Materials Science
  • Particles
  • Phase
  • Phase Separation
  • Physical Properties
  • Polymeric Films
  • Polymers
  • Surface Properties
  • Two Dimensional

Fields of Study

  • Chemistry
  • Materials science

Readers

  • Nanocomposite Materials Science
  • Organic Chemistry

Technology Areas

  • Microelectronics