Pressure-Induced Topochemical Polymerization toward Advanced Energetic Materials  

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作  者:Guangyu Qi Siwei Song Zhiying Deng Dajian Huang Fang Chen Bingmin Yan Huiyang Gou Qinghua Zhang Yi Wang 

机构地区:[1]Institute of Chemical Materials,China Academy of Engineering Physics(CAEP),Mianyang 621999 [2]Center for High Pressure Science and Technology Advanced Research(HPSTAR),Beijing 100094

出  处:《CCS Chemistry》2023年第8期1815-1826,共12页中国化学会会刊(英文)

基  金:supported by the Presidential Foundation of CAEP(grant no.YZJJLX2019006);the National Science Foundation of China(grant nos.22075259 and 22175157).

摘  要:Pressure produces closely packed,high-density materials,thereby providing a promising strategy to obtain high-energy-density materials.However,new phases or structures of energetic materials at high pressure are often not quenchable under ambient conditions.In this work,high-pressure topochemical methodology is first introduced for the preparation of stable energetic materials under ambient conditions.A pressure-induced polymerizable energetic material named PIP-1 is designed and prepared.The experimental measurements demonstrate that the polymerization of PIP-1 is caused by the breakage of C≡C bonds and the generation of C=C bonds.In accord with the experimental results,density functional theory calculations further revealed that the monomer PIP-1 is polymerized to generate 1D PIP-1 tape,and the density of polymerized PIP-1 is increased by 4.9%upon decompression.The successful realization of high-energy-density structure using high pressure showcases a new design strategy for advanced polymerizable energetic materials.

关 键 词:high pressure energetic material TOPOCHEMISTRY pressure-induced polymerization 

分 类 号:O63[理学—高分子化学]

 

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