J. Mater. Sci. Technol. ›› 2024, Vol. 175: 125-131.DOI: 10.1016/j.jmst.2023.08.016

• Research article • Previous Articles     Next Articles

Conjugate ferrocene polymer derived magnetic Fe/C nanocomposites for electromagnetic absorption application

Aming Xiea,*, Zhendong Maa, Ziming Xiongb, Weijin Lic, Lai Jianga,*, Qiu Zhuanga, Siyao Chenga, Wei Lud,*   

  1. aSchool of Mechanical Engineering, Nanjing University of Science & Technology, Nanjing 210094, China;
    bState Key Laboratory of Explosion & Impact and Disaster Prevention & Mitigation, Army Engineering University of PLA, Nanjing 210007, China;
    cSchool of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;
    dShanghai Key Lab. of D&A for Metal-Functional Materials, School of Materials Science & Engineering, Tongji University, Shanghai 201804, China
  • Received:2023-07-27 Revised:2023-08-23 Accepted:2023-08-25 Published:2024-03-10 Online:2023-09-09
  • Contact: *E-mail addresses: xieaming@njust.edu.cn (A. Xie), laijiang@njust.edu.cn (L. Jiang), weilu@tongji.edu.cn (W. Lu)

Abstract: Coordination bonds are relatively unstable compared to covalent bonds, and common carbon-based absorbing material precursors are bonded in the form of coordination bonds. In this work, we have introduced ferrocene units into conjugated microporous polymers (CMP) in one step by Suzuki reaction. By adjusting the proportion of ferrocene units, a series of magnetic Fe-C nanocomposites (Fe-P-XC) derived from conjugated ferrocene polymers without heteroatom doping (N, S, P, etc.) were formed. The Fe-P-2C composite has good absorption properties with minimum reflection loss at 4.4 GHz (-58.66 dB) and effective absorption bandwidth (EAB) of 6.28 GHz at 2.4 mm (11.72-18 GHz). Compared with the precursor materials formed by coordination bonds, the present work reveals the electromagnetic wave absorption mechanism of carbon-based materials without heteroatom doping through a simple and effective strategy.

Key words: Covalent bonds, Suzuki reaction, Conjugated ferrocene polymers, Electromagnetic wave absorption