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...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 towards 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.展开更多
文摘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 towards 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.
