A Two‐Dimensional Semiconductive Metal‐Organic Framework for Highly Efficient Microwave Absorption

作者：Peng Miao, Tao Zhang, Teng Wang, Juan Chen, Tong Gao, You Wang, Jie Kong, Kai‐Jie Chen · 发表于：Chinese Journal of Chemistry · 年份：2021 · DOI：10.1002/cjoc.202100660 · 被引用次数：47 · 研究领域：Electromagnetic wave absorption materials、Advanced Antenna and Metasurface Technologies、Metamaterials and Metasurfaces Applications

Comprehensive Summary Advanced microwave absorbing materials (MAMs) are urgently required to eliminate and attenuate microwaves to address the ubiquitous microwave radiations and interference. In this contribution, we report the microwave absorption application of a two‐dimensional (2D) semiconductive metal‐organic framework (MOF), i.e. , CuHT (HT = 4‐hydroxythiophenol), without any pyrolysis at high temperature. Owing to the suitable electrical conductivity (2.69 × 10 –4 S·cm –1 ), CuHT renders remarkable microwave absorption performance, with the minimum reflection loss ( RL min ) of –50.9 dB and the effective absorption bandwidth of 4.2 GHz (7.7—10.9 GHz) at a thickness of 1.74 mm. Based on DFT calculation, microwave attenuation is mainly originated from resistance loss due to the conducting planes of honeycomb‐like Cu 2 S layers. Thanks to the facile kilogram‐scale synthesis, CuHT holds great potential for future microwave absorption applications.