首页|冠醚-咪唑型铁基超分子材料的合成、结构及电学性能

冠醚-咪唑型铁基超分子材料的合成、结构及电学性能

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以咪唑、三氯化铁和二苯并-18-冠醚-6为原料,通过自然蒸发法在乙腈溶剂中获得了一种有机-无机杂化超分子材料(C3H5N2)+(DB-18-Crown-6)(FeCl4)-.通过红外光谱、单晶X-射线衍射、粉末X-射线衍射、热重分析、介电常数和电化学等对其结构和性能进行表征.结果显示,(C3H5N2)+(DB-18-Crown-6)(FeCl4)-在低温(100 K)和室温(293 K)的空间群为Ia,属于单斜晶系,在空间结构内超分子阳离子(C3H5N2)+(DB-18-Crown-6)与阴离子(FeCl4)-以 N-H…O、C-H…O、C-H…Cl等氢键相互作用形成二维网状超分子结构.介电测试显示(C3H5N2)+(DB-18-Crown-6)(FeCl4)-在升温和降温的过程中均在160～200 K和220～260 K产生两个阶梯型介电异常峰,其循环伏安测试表明(C3H5N2)+(DB-18-Crown-6)(FeCl4)-具有明显的电子转移性能,显示(C3H5N2)+(DB-18-Crown-6)(FeCl4)-是一种新型的介电异常及电化学性能材料.
Synthesis,Structure and Electrical Properties of Crown Ether-Imidazole Type Iron-Based Supramolecular Materials
This research aims to obtain a novel organic-inorganic hybrid supramolecular material(C3H5N2)+(DB-18-Crown-6)(FeCl4)-by natural evaporation method in acetonitrile solvent using imidaz-ole,ferric chloride and dibenzo-18-crown-6 as raw materials.Its structure and properties were characterized by infrared spectroscopy,single crystal X-ray diffraction,powder X-ray diffraction,dielectric constant ther-mogravimetric and electrochemistry analysis.The results of single crystal X-ray diffraction showed that the space group of(C3H5N2)+(DB-18-Crown-6)(FeCl4)-at low temperature(100 K)and room tempera-ture(293 K)was Ia,which belonged to monoclinic system.In the space structure,the supramolecular cation(C3H5N2)+(DB-18-Crown-6)and the anion(FeCl4)-formed a two-dimensional network supramo-lecular structure by hydrogen-bonding interactions such as N-H…O,C-H…O,C-H…Cl.The dielectric test showed that(C3H5N2)+(DB-18-Crown-6)(FeCl4)-produced two stepped dielectric anomaly peaks in the temperature range of 160-200 K and 220-260 K during heating and cooling processes.The cyclic voltam-metry test showed that(C3H5N2)+(DB-18-Crown-6)(FeCl4)-had good electron transfer performance,in-dicating that(C3H5N2)+(DB-18-Crown-6)(FeCl4)-was a new type of dielectric anomaly and electrochem-ical performance material.

dibenzo-18-crown-6imidazolesupermolecular materialshydrogen bondstep-type dielec-tric anomaly

努尔曼·依斯马依力、胡宏志、王娜、刘洋、刘尊奇

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新疆农业大学 化学化工学院,乌鲁木齐 830052

聚合物新型成型装备国家工程研究中心新疆分中心,乌鲁木齐 830052

新疆农业化学与生物材料重点实验室,乌鲁木齐 830052

二苯并-18-冠醚-6 咪唑 超分子材料 氢键 阶梯型介电异常

新疆维吾尔自治区自然科学基金面上项目新疆维吾尔自治区重点研发专项新疆维吾尔自治区重点研发专项国家自然科学基金新疆维吾尔自治区"天山英才"计划

2022D01A762022B02033-32022B02049-321561030

2023

10.20088/j.cnki.jxau.2023.05.008

新疆农业大学学报
新疆农业大学

新疆农业大学学报

影响因子：0.599
ISSN：1007-8614
年,卷(期)：2023.46(5)
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