| 1,4-二氮杂二环[2.2.2]辛烷衍生物的卤代作用有效诱导介电相变 |
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| 引用本文： | 程赛楠,丁坤,宋泷藤,张铁,张志旭,张毅,付大伟. 1,4-二氮杂二环[2.2.2]辛烷衍生物的卤代作用有效诱导介电相变[J]. 无机化学学报, 2021, 37(6): 961-967 |
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| 作者姓名： | 程赛楠 丁坤 宋泷藤 张铁 张志旭 张毅 付大伟 |
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| 作者单位： | 东南大学, 分子铁电科学与应用江苏省重点实验室, 有序物质科学研究中心, 南京 211189 |
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| 基金项目： | 国家自然科学基金（No.21991141）资助。 |
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| 摘 要： | 我们通过精确的分子设计,得到3种1,4-二氮杂二环[2.2.2]辛烷(Dabco)衍生物X-EtHDabco(EtDabco=N-乙基-1,4-二氮杂双环[2.2.2]辛烷,X=H、F、Cl).分别以3种Dabco衍生物、溴化锌为原料按一定配比反应,成功地合成了一系列新型有机-无机杂化相变材料(H-EtHDabco)[...
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| 关 键 词： | 卤素取代 有机-无机杂化 可逆相变 介电性质 单晶 |
| 收稿时间： | 2021-03-05 |
| 修稿时间： | 2021-04-17 |
Dielectric Phase Transition Induced by Halogen Substitution Based on 1,4-Diazabicyclo[2.2.2]octane-Derivatives |
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| CHENG Sai-Nan,DING Kun,SONG Shuang-Teng,ZHANG Tie,ZHANG Zhi-Xu,ZHANG Yi,FU Da-Wei. Dielectric Phase Transition Induced by Halogen Substitution Based on 1,4-Diazabicyclo[2.2.2]octane-Derivatives[J]. Chinese Journal of Inorganic Chemistry, 2021, 37(6): 961-967 |
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| Authors: | CHENG Sai-Nan DING Kun SONG Shuang-Teng ZHANG Tie ZHANG Zhi-Xu ZHANG Yi FU Da-Wei |
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| Affiliation: | Ordered Matter Science Research Center, Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, China |
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| Abstract: | We successfully synthesized (X-EtHDabco)[ZnBr4] (X=H, F, Cl for compound 1, 2, and 3, EtDabco=N-ethyl-1,4-diazoniabicyclo[2.2.2]octane) through precise molecular design. Systematic measurements (powder X-ray diffraction, differential scanning calorimetry measurements, dielectric measurements) were performed on these compounds. It is noteworthy that, no hint of heat anomaly was observed for 1, while both 2 and 3 displayed intriguing isostructural order-disorder phase transition near 230 K. Through the analysis of the crystal structure, the order-disorder transformation of organic ammonium plays a major role in the phase transition, in addition, the displacement of the inorganic framework also contributes to dielectric response. |
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| Keywords: | halogen substitution organic-inorganic hybrid reversible phase transition dielectric properties single crystal |
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