A facile solvent/non-solvent co-crystallization technology is applied to fabricate porous CL-20, which exhibits interesting morphologies and low sensitivity with β-cyclodextrin as a crystal modifier.
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Constructing Porous Energetic Spherulites via Solvation-Growth Coupling for Enhanced Combustion.
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State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, P. R. China.
The fabrication of materials with hierarchical structures has garnered great interest, owing to the potential for significantly enhancing their functions. Herein, a strategy of coupling molecular solvation and crystal growth is presented to fabricate porous spherulites of 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (CL-20), an important energetic material. With the addition of polyvinylpyrrolidone in the antisolvent crystallization, the metastable solvate of CL-20 is formed and grows spherulitically, and spontaneously desolvates to obtain the porous spherulite when filtration, in which the characteristic peak of the nitro group of CL-20 shifts detected by the in situ micro-confocal Raman spectroscopy.
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March 2024
State Key Laboratory of Explosion Science and Technology, School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China.
Article Synopsis
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ACS Omega
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National Special Superfine Powder Engineering Research Center of China, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China.
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College of Chemistry and Molecular Engineering , Zhengzhou University, Zhengzhou 450001 , PR China.
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