On-Demand Energetic Nanocomposites with Tunable Thermal Sensitivity from Porous Metal–Organic Frameworks

IF 8.7 1区化学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Materials Letters Pub Date : 2025-07-24 DOI:10.1021/acsmaterialslett.5c00898

Nicholas A. Tomalia, and , Adam J. Matzger*,

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Abstract

Strategies for developing safer energetic materials (EMs) have long been a focus in the field. Realization of activatable explosives has seen some progress, with the few existing examples based on switchable desensitization of sensitive monomolecular EMs; absent are activatable EMs comprising nonenergetic components. Here, a metal–organic framework (MOF)-based strategy is used to formulate explosive materials from completely nonenergetic components that are combined to achieve controlled, on-demand sensitivity. Application of this strategy resulted in EMs that are insensitive to impact, friction, and electrostatic discharge but become explosive only when heated beyond the point of oxidizer melt infiltration into the MOF. The structural metal in the MOF dramatically influences thermal sensitivity, heat evolution, and gas release. Controlled sensitization of inert components through heating, enabling nanoscopic mixing of fuel, oxidizer, and catalyst by melt infiltration, presents a strategy to produce safer-to-handle EMs.

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从多孔金属-有机框架制备的热敏度可调的按需高能纳米复合材料

开发更安全的含能材料（EMs）的策略一直是该领域关注的焦点。可活化炸药的实现取得了一定的进展，现有的几个例子是基于敏感的单分子EMs的可切换脱敏；不存在由非能量成分组成的可激活的电磁。在这里，一种基于金属有机框架（MOF）的策略被用于从完全无能量的成分中合成爆炸性材料，这些成分组合在一起，以实现可控的、按需的灵敏度。这一策略的应用导致EMs对冲击、摩擦和静电放电不敏感，但只有当加热超过氧化剂熔体渗透到MOF中时才会发生爆炸。MOF中的结构金属显著影响热敏性、热演化和气体释放。通过加热控制惰性成分的敏化，通过熔体渗透实现燃料、氧化剂和催化剂的纳米级混合，提出了一种生产更安全的EMs的策略。

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来源期刊

ACS Materials Letters MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

14.60

自引率

3.50%

发文量

261

期刊介绍： ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.