Frontiers in Materials (Mar 2023)

Recent advances in microwave-absorbing materials fabricated using organic conductive polymers

  • Reza Peymanfar,
  • Reza Peymanfar,
  • Reza Peymanfar,
  • Haniyeh Dogari,
  • Elnaz Selseleh-Zakerin,
  • Mohammad Hossein Hedayatzadeh,
  • Sara Daneshvar,
  • Nasim Amiri-Ramsheh,
  • Hossein Ghafuri,
  • Ali Mirkhan,
  • Ali Mirkhan,
  • Guangbin Ji,
  • Bagher Aslibeiki

DOI
https://doi.org/10.3389/fmats.2023.1133287
Journal volume & issue
Vol. 10

Abstract

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Microwave-absorbing materials are widely utilized in military and civilian applications. Moreover, their environmental potential to refine electromagnetic pollution has promoted their importance. An ideal conjugated organic polymer for use as a microwave-absorbing material should possess high porosity, low density, a long conjugated backbone, a narrow energy band gap, proper conductive and relaxation loss, and vast specific surface area. This review describes the conductive polymer types used as microwave-absorbing material and their composites toward improving microwave-absorbing capability. Additionally, recent developments in synthetic strategies and structural properties of pure carbon-based microwave-absorbing materials and other conjugated structures having heteroatoms in their chains are discussed. In the field of microwave absorbers, the predominant microwave-absorbing mechanisms among conductive polymers and their composites as well as the special mechanisms for tuning microwave-absorbing characteristics, including metamaterial and quasi-antenna features, are dissected. This review sheds new light on architecting low-density and high-performance microwave-absorbing structures and offers new prospects in tailoring conjugated polymers based on their dominant mechanisms.

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