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Related Concept Videos

Characteristics and Nomenclature of Copolymers01:24

Characteristics and Nomenclature of Copolymers

Copolymers are the products obtained from the polymerization of multiple monomer species. So, in a polymer chain itself, there can be multiple repeating units that come from different monomers. The process of synthesizing a polymer from different monomer species is called copolymerization. When two monomers are involved, the polymer is known as a bipolymer. Polymers with three and four monomers are termed terpolymers and quaterpolymers, respectively. Figure 1 depicts the copolymerization of...

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A simple route to highly oriented and ordered nanoporous block copolymer templates.

Soojin Park1, Jia-Yu Wang, Bokyung Kim

  • 1Department of Polymer Science and Engineering, University of Massachusetts, Amherst 01003, USA.

ACS Nano
|February 12, 2009
PubMed
Summary

This study presents a simple method for creating highly ordered block copolymer films. These nanoporous films are thermally stable and resistant to etching, making them ideal for nanostructure fabrication.

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Area of Science:

  • Materials Science
  • Polymer Science
  • Nanotechnology

Background:

  • Controlling block copolymer microdomain orientation is crucial for nanostructured material fabrication.
  • Existing methods often lack robustness, simplicity, or speed, hindering practical application.

Purpose of the Study:

  • To develop a robust, simple, and rapid method for creating highly ordered block copolymer films.
  • To demonstrate the utility of these films as templates for nanostructured materials.

Main Methods:

  • Spin-coating of poly(styrene-b-4-vinylpyridine) (PS-b-P4VP) diblock copolymers from mixed solvents.
  • Utilizing preferential solvation with alcohol for surface reconstruction.
  • Gold evaporation to create thermally stable and etching-resistant films.

Main Results:

  • Achieved highly oriented, cylindrical microdomains with excellent order on diverse substrates.
  • Created nanoporous films via surface reconstruction upon drying.
  • Produced films with enhanced thermal stability and reactive ion etching resistance.

Conclusions:

  • The described method offers a straightforward and efficient route to ordered block copolymer films.
  • The resulting nanoporous films are suitable for fabricating advanced nanostructured materials.
  • The films' stability and resistance properties expand their potential applications in nanotechnology.