Ionic Liquids with Benzenesulfonate Anions: Nonfluorinated, Thermally Stable Anion Options

Ionic Liquids with Benzenesulfonate Anions: Nonfluorinated, Thermally Stable Anion Options
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具有苯磺酸根阴离子的离子液体:非氟化、热稳定阴离子选项

DOI:
10.1021/acsaenm.2c00229
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发表时间:
2023
期刊:
ACS Applied Engineering Materials
影响因子:
--
通讯作者:
Davis, James H.
Davis, James H.
中科院分区:
--
文献类型:
--
作者:
Soltani, Mohammad;Siu, Benjamin;Vo, Matthew;West, Kevin N.;Adu, Clinton;Mirjafari, Arsalan;Davis, James H.

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耐热材料一直被用作润滑剂、传热液、高温结构材料和其他需要或希望具有热稳定性的应用。在这里,我们提出了一种新型的耐热离子液体,它含有廉价的苯磺酸阴离子,具有深刻的长期高温有氧稳定性--即在300°C的空气中96小时内没有质量损失。观察到熔融和玻璃化转变温度与阴离子的位置和类型之间的相干关联。我们的工作表明,这些体系可以设计成热稳定、低熔点的有机盐,为它们的结构-性质-功能关系的工程设计提供了有价值的设计见解。
Thermally resistant materials have been sought after for use as lubricants, heat transfer fluids, high temperature structural materials, and other applications where thermal stability is required or desired. Herein, we present a new class of thermally robust ionic liquids containing inexpensive benezenesulfonate anions with profound long-term, high-temperature aerobic stability–i.e., no mass loss in 96 h at 300 °C in air. A coherent correlation between melting and glass transition temperatures and the location and type of the anions was observed. Our work indicates that these systems can be designed to form thermally stable, low-melting organic salts, providing valuable design insights for engineering of their structure–property–function relationships.
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