Conductance Reinforced Relaxation Attenuation with Strong Metal‐N Coordination in Multivariate π‐Conjugated MOFs for Integrated Radar‐Infrared Camouflage

IF 27.4 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Advanced Materials Pub Date : 2025-05-24 DOI:10.1002/adma.202501330

Yongheng Jin, Junye Cheng, Shan Jiang, Xingjian Zou, Yuping Wang, Yao Li, Junjie Guo, Zhengyang Ren, Qingkui Chen, Zhaosong Zhang, Qinghua Qin, Bin Liu, Renchao Che

{"title":"Conductance Reinforced Relaxation Attenuation with Strong Metal‐N Coordination in Multivariate π‐Conjugated MOFs for Integrated Radar‐Infrared Camouflage","authors":"Yongheng Jin, Junye Cheng, Shan Jiang, Xingjian Zou, Yuping Wang, Yao Li, Junjie Guo, Zhengyang Ren, Qingkui Chen, Zhaosong Zhang, Qinghua Qin, Bin Liu, Renchao Che","doi":"10.1002/adma.202501330","DOIUrl":null,"url":null,"abstract":"π‐conjugated metal‐organic frameworks (MOFs) have emerged as promising candidates for electromagnetic wave (EMW) absorption, owning to their high conductivity and versatile structural tunability. Nevertheless, the effective control over their dielectric properties is a challenge. Herein, the charge carrier migration in π‐conjugated MOFs is harnessed to significantly amplify the electromagnetic response, where the strengthened atom coordination can activate a distinctive conductance‐reinforced attenuation mechanism. This results in finely calibrated EMW absorption characteristics, including a wide effective absorption bandwidth of 6.0 GHz at mere 2 mm, a minimum reflection loss of −46.7 dB at 3.5 mm, and a substantial reduction in radar cross‐section (RCS) up to −23.3 dBm2. Furthermore, the seamless integration of the π‐conjugated MOF hybrids within ultraviolet (UV)‐curable 3D printing technology has enabled the fabrication of a stealth‐enabled drone propeller prototype, which exhibits a remarkably low infrared emissivity of 0.205. Additionally, when the propeller device is subjected to a 100 °C heating platform for 30 min, its surface temperature remains below 50 °C, demonstrating exceptional thermal management and stability under elevated temperature conditions. This work underscores the immense potential of these cutting‐edge absorbers to shape the future of advanced military stealth technologies.","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"19 1","pages":""},"PeriodicalIF":27.4000,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1002/adma.202501330","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

π‐conjugated metal‐organic frameworks (MOFs) have emerged as promising candidates for electromagnetic wave (EMW) absorption, owning to their high conductivity and versatile structural tunability. Nevertheless, the effective control over their dielectric properties is a challenge. Herein, the charge carrier migration in π‐conjugated MOFs is harnessed to significantly amplify the electromagnetic response, where the strengthened atom coordination can activate a distinctive conductance‐reinforced attenuation mechanism. This results in finely calibrated EMW absorption characteristics, including a wide effective absorption bandwidth of 6.0 GHz at mere 2 mm, a minimum reflection loss of −46.7 dB at 3.5 mm, and a substantial reduction in radar cross‐section (RCS) up to −23.3 dBm2. Furthermore, the seamless integration of the π‐conjugated MOF hybrids within ultraviolet (UV)‐curable 3D printing technology has enabled the fabrication of a stealth‐enabled drone propeller prototype, which exhibits a remarkably low infrared emissivity of 0.205. Additionally, when the propeller device is subjected to a 100 °C heating platform for 30 min, its surface temperature remains below 50 °C, demonstrating exceptional thermal management and stability under elevated temperature conditions. This work underscores the immense potential of these cutting‐edge absorbers to shape the future of advanced military stealth technologies.

查看原文本刊更多论文

用于雷达-红外综合伪装的多元π共轭mof的强金属- N配位电导增强弛豫衰减

π共轭金属有机框架（mof）由于其高导电性和多用途的结构可调性，已成为电磁波吸收（EMW）的有前途的候选者。然而，如何有效地控制它们的介电特性是一个挑战。本文利用π共轭mof中的载流子迁移来显著放大电磁响应，其中增强的原子配位可以激活独特的电导增强衰减机制。这导致了精确校准的EMW吸收特性，包括仅2 mm处6.0 GHz的宽有效吸收带宽，3.5 mm处最小反射损耗为- 46.7 dB，雷达横截面（RCS）大幅降低至- 23.3 dBm2。此外，π共轭MOF混合材料与紫外线固化3D打印技术的无缝集成，使隐形无人机螺旋桨原型得以制造，其红外发射率非常低，为0.205。此外，当螺旋桨装置在100°C的加热平台上加热30分钟时，其表面温度保持在50°C以下，在高温条件下表现出卓越的热管理和稳定性。这项工作强调了这些尖端吸收器在塑造未来先进军事隐身技术方面的巨大潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Advanced Materials 工程技术-材料科学：综合

CiteScore

43.00

自引率

4.10%

发文量

2182

审稿时长

2 months

期刊介绍： Advanced Materials, one of the world's most prestigious journals and the foundation of the Advanced portfolio, is the home of choice for best-in-class materials science for more than 30 years. Following this fast-growing and interdisciplinary field, we are considering and publishing the most important discoveries on any and all materials from materials scientists, chemists, physicists, engineers as well as health and life scientists and bringing you the latest results and trends in modern materials-related research every week.