Selective coding dielectric genes based on proton tailoring to improve microwave absorption of MOFs

Regulating dielectric genes of hollow metal-organic frameworks is a milestone project for microwave absorption (MA). However, there is still a bottleneck in deciphering the contribution of various dielectric genes, making it hard to expand the MA potential from selective encoding gene sequences. Herein, a custom-made proton tailoring strategy is used to build a controllable cavity, and meticulously designed thermodynamic regulation promotes the rearrangement of carbon atoms from disorder to order, thus enhancing the characteristics of charge transfer. Meanwhile, the defect-configuration transformation from heteroatom to vacancy and geometric configuration of hollow structure increase the polarization-related dielectric genes. Therefore, MA performance is enhanced to-wards broadband absorption (6.6 GHz, 1.78 mm) and high-efficiency loss (-62.5 dB), making samples suitable for complex open electromagnetic environments. This work realizes the tradeoff between dielectric gene sequences and provides a profound insight into the functions and sources of various microwave loss mechanisms.

Automated summary

By utilizing a custom-made proton tailoring strategy and meticulously designed thermodynamic regulation, researchers have successfully enhanced the charge transfer characteristics of magnesium ions and the polarization-related dielectric genes of hollow structures, thereby improving the microwave absorption performance of metal-organic frameworks and making the samples suitable for complex electromagnetic environments. This work achieves a tradeoff between dielectric gene sequences and provides a profound insight into the functions and sources of various microwave loss mechanisms.