Acta Phys. -Chim. Sin. ›› 2026, Vol. 42 ›› Issue (6): 100271.doi: 10.1016/j.actphy.2026.100271

• ARTICLE • Previous Articles     Next Articles

Molecular dipole engineering for tailored dielectric properties in MXene/ZnO heterostructures

Jia-Hao Wang1,2, Bo Cai1,2, Bowen Sun1,*(), Zhi-Ling Hou3, Shu-Hao Yang1,2, Qinglin Yang1, Pei-Yan Zhao2, Wen-Ping Li4,*(), Yu Zhang2,5, Guang-Sheng Wang1,2,*()   

  1. 1 Hangzhou International Innovation Institute, Beihang University, Hangzhou 311115, Zhejiang Province, China
    2 School of Chemistry, Beihang University, Beijing 100191, China
    3 School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing 100124, China
    4 School of Physics, Beihang University, Beijing 100191, China
    5 School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710072, Shaanxi Province, China
  • Received:2026-01-16 Revised:2026-02-26 Accepted:2026-02-27 Published:2026-04-21
  • Contact: Email: sunbw@buaa.edu.cn (Bowen Sun)liwp@buaa.edu.cn (Wen-Ping Li)wanggsh@buaa.edu.cn (Guang-Sheng Wang)

RichHTML

16

Full text @ ScienceDirect

Like

Supplement

1

Abstract:

The optimization of dielectric properties through controlling polarization effects in heterogeneous materials remains challenging due to structural complexity. This work demonstrates the precise regulation of interface polarization strength through molecular grafting-induced dipole reorientation. Experimental analyses confirm that the orientation of these dipoles effectively modulates the interfacial polarization: the –CF3 group enhances, while the –NH2 group suppresses electron transfer and polarization loss effects. The optimized MXene/ZnO modified with –CF3 composite exhibits exceptional electromagnetic wave absorption performance, achieving a minimum reflection loss of −66.7 dB and an effective absorption bandwidth of 5.05 GHz. This work demonstrates a novel strategy for the precise tuning of electromagnetic parameters through interfacial dipole engineering, offering new insights for the design of advanced electromagnetic wave-absorbing materials.

Key words: Dielectric parameters, Dipole moment, Interface polarization, Silane coupling agents, ZnO quantum dots