Synthesis and pressure-induced structural phase transition of energetic molecular perovskite DAI-1

被引：0
作者：
Yan, Tingting [1 ]
Li, Han [1 ]
Xi, Dongyang [1 ]
Liu, Linan [1 ]
Jin, Dinghan [1 ]
Sun, Lei [1 ]
机构：
[1] Shenyang Jianzhu Univ, Sch Mat Sci & Engn, Shenyang 110168, Peoples R China
来源：
SOLID STATE SCIENCES | 2025年 / 162卷
关键词：
Synthesis; Molecular perovskite; Energetic materials; High pressure; Phase transition; Irreversible;
D O I：
10.1016/j.solidstatesciences.2025.107864
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
We synthesized the energetic molecular perovskite DAI-1 (C48H112I24N16Na8O96) and investigated its behavior under high pressure using high-pressure Raman spectroscopy. DAI-1 exhibits an ABX3 cubic perovskite structure, with significant changes in its Raman spectrum occurring between 4.3 and 7.1 GPa, signaling a phase transition. Releasing the pressure after applying it up to 12.3 GPa showed that the Raman spectrum did not return to its original state, indicating an irreversible phase transition. Furthermore, we conducted simulations to analyze the trend of changes in the crystal structure under pressure. This study serves as a reference for in-depth research on the high-pressure behavior of DAI-1 and other related substances.
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页数：6
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