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A Simple and Scalable Fabrication Method for Organic Electronic Devices on Textiles
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Aqueous Processing for Printed Organic Electronics: Conjugated Polymers with Multistage Cleavable Side Chains.

Brian Schmatz1, Zhibo Yuan1, Augustus W Lang1

  • 1School of Chemistry and Biochemistry, School of Materials Science and Engineering, Center for Organic Photonics and Electronics, Georgia Tech Polymer Network, Georgia Institute of Technology, Atlanta, Georgia 30332-0400, United States.

ACS Central Science
|October 6, 2017
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel method for processing conjugated polymers in water, enabling cost-effective and eco-friendly organic electronics manufacturing. This technique preserves electronic properties while allowing for aqueous solution processing and film formation.

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Organic Electronics

Background:

  • Aqueous solution processing of conjugated polymers is desirable for cost-effective and environmentally friendly large-scale manufacturing of organic electronics.
  • Challenges include maintaining electronic properties, difficulties in purification, limitations of aqueous polymerization reactions, and reduced solid-state order from ionic groups.

Purpose of the Study:

  • To develop a method for processing conjugated polymers in aqueous solutions without compromising their electronic properties.
  • To enable efficient synthesis, purification, and processing of semiconducting polymers for organic electronics.

Main Methods:

  • A multistage cleavable side chain strategy was employed.
  • Conjugated polymers were synthesized and purified in organic solvents with cleavable side chains.
  • Polymers were converted to water-soluble forms for aqueous processing (e.g., blade coating).
  • UV irradiation was used to cleave side chains, yielding solvent-resistant films.

Main Results:

  • Demonstrated an organic-soluble polythiophene converted to an aqueous-soluble polyelectrolyte via hydrolysis.
  • Successfully produced solvent-resistant, electroactive polymer thin films after aqueous blade coating and UV treatment.
  • Achieved solid-state charge transport in organic field-effect transistors (OFETs).
  • Observed red to colorless electrochromism in ionic media.

Conclusions:

  • The cleavable side chain method offers a universal approach for aqueous printing of organic electronic materials.
  • This technique successfully combines aqueous processability with high electronic performance.
  • The developed method has potential applications in OFETs and electrochromic displays.