Nitrate anions embedded in rigid and cationic 3D energetic MOFs constructed by the chelating ligand towards insensitive energetic materials

Wang, Qin; Yan, Yun-Fan; Weng, Jiao-Lin; Huang, Ying; Yang, Fu; Xie, Hao-Hui; Tan, Fei; Zheng, Fa-Kun; Xu, Jian-Gang

doi:10.1039/d3nj04910h

New J. Chem.

2024

DOI: 10.1039/d3nj04910h

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Nitrate anions embedded in rigid and cationic 3D energetic MOFs constructed by the chelating ligand towards insensitive energetic materials

Qin Wang,

Yun-Fan Yan,

Jiao-Lin Weng

et al.

Abstract: A rigid cationic 3D EMOF was prepared by a simple hydrothermal method using a nitrogen-rich chelating ligand, and a strong hydrogen bond interaction was formed to stabilize NO3− anions with high energy and low mechanical stimulation.

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Encapsulating Azolates Within Cationic Metal–Organic Frameworks for High‐Energy‐Density Materials

Ding,

Zhao,

Zhang

et al. 2024

Advanced Science

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Despite the synthesis of numerous cationic metal‐organic frameworks (CMOFs), their counter anions have been primarily limited to inorganic Cl−, NO3−, ClO4−, BF4−, and Cr2O72−, which have weak coordination abilities. In this study, a series of new CMOFs is synthesized using azolates with strong coordination abilities as counter anions, which are exclusively employed as ligands for coordinating with metals. Owing to the unique nitrogen‐rich composition of azolates, the CMOFs demonstrate significant potential as high‐energy‐density materials. Notably, CMOF(CuTNPO) has an exceptionally high heat of detonation of 7375 kJ kg−1, surpassing even that of the state‐of‐art CL‐20 (6536 kJ kg−1). To further validate the advantages of employing azolates as counter anions, analogues with azolates serving as ligands are also synthesized. The comparison study indicates that encapsulating azolates within the cationic frameworks confers both high energy and safety properties. X‐ray data and quantum calculations indicate that their enhanced performance stems from stronger H─bonds and π–π interactions. This study introduces new roles for azolates in MOFs and expands possibilities for structural diversity and potential applications of framework materials.

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Encapsulating Azolates Within Cationic Metal–Organic Frameworks for High‐Energy‐Density Materials

Ding,

Zhao,

Zhang

et al. 2024

Advanced Science

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show abstract

Application and prospects of EMOFs in the fields of explosives and propellants

Tan,

Dou,

Yang

et al. 2024

Dalton Trans.

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Nitrate anions embedded in rigid and cationic 3D energetic MOFs constructed by the chelating ligand towards insensitive energetic materials

Abstract: A rigid cationic 3D EMOF was prepared by a simple hydrothermal method using a nitrogen-rich chelating ligand, and a strong hydrogen bond interaction was formed to stabilize NO3− anions with high energy and low mechanical stimulation.

Cited by 2 publications

References 52 publications

Encapsulating Azolates Within Cationic Metal–Organic Frameworks for High‐Energy‐Density Materials

Encapsulating Azolates Within Cationic Metal–Organic Frameworks for High‐Energy‐Density Materials

Application and prospects of EMOFs in the fields of explosives and propellants

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