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Recent Progress of Fluorinated Conjugated Polymers.

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Advanced Materials (Deerfield Beach, Fla.)
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Fluorinated conjugated polymers offer enhanced performance for organic electronics. Their unique properties, including lower energy levels and improved electron deficiency, drive advancements in devices like transistors and solar cells.

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fluorinated conjugated polymersfluorination strategiesorganic electronic device applicationorganic field‐effect transistorspolymeric semiconductors

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Area of Science:

  • Materials Science
  • Organic Electronics
  • Polymer Chemistry

Background:

  • Conjugated polymers are valued for their lightweight, processability, and modifiability.
  • Fluorinated conjugated polymers have emerged as high-performance n-type or ambipolar semiconductors.
  • Key features include high coplanarity, lower frontier molecular orbital energy levels, and strong nonbonding interactions.

Purpose of the Study:

  • To review fluorinated building blocks and synthetic methods for conjugated polymers.
  • To discuss the properties and applications of various fluorinated conjugated polymers.
  • To provide an outlook on the future development of this material class.

Main Methods:

  • Summarization of fluorinated building blocks (e.g., benzene, thiophene, B←N units, fluoroalkyl chains).
  • Description of synthetic methodologies for fluorinated conjugated polymers, evaluating their pros and cons.
  • Systematic discussion of properties and applications based on structure-property relationships.

Main Results:

  • Fluorine incorporation enhances backbone electron-deficiency, influencing charge transport.
  • Fluorinated polymers show promise in organic field-effect transistors (OFETs), organic solar cells (OSCs), and thermoelectric devices.
  • Specific examples include cyclopentadithiophene-, amide-, imide-based, and B←N embedded polymers.

Conclusions:

  • Fluorinated conjugated polymers are crucial for advancing organic opto-electronic devices.
  • Continued research into novel structures and synthesis is vital for overcoming current challenges.
  • The unique properties imparted by fluorine atoms position these polymers for future technological breakthroughs.