Electronic States of Acetic Acid in a Binary Mixture of Acetic Acid and 1-Methylimidazole Depend on the Environment
Electronic States of Acetic Acid in a Binary Mixture of Acetic Acid and 1-Methylimidazole Depend on the Environment
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乙酸和 1-甲基咪唑二元混合物中乙酸的电子态取决于环境
DOI：
10.1021/acs.jpcb.8b11437
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Horikawa Yuka
中科院分区：
文献类型：
--
作者：
Yoshimura Noriko;Takahashi Osamu;Oura Masaki;Horikawa Yuka
报道了一种醋酸/1-甲基咪唑（1-MI）混合物的独特特性，它比纯乙酸或纯1-MI具有更高的导电性，但由电中性分子组成。我们应用软x射线能谱法揭示了乙酸/1-MI混合物中不同摩尔分数乙酸的电子态（χHOAc）。结果表明，在电导率特别高的区域，醋酸单体的数量增加；在电导率较低的区域，共用分子轨道形成的醋酸与1-MI络合物的数量增加。在低电导率区域有少量的醋酸单体，因为络合物抑制醋酸生成其单体。这些结果表明醋酸单体可能与导电有关。
The unique characteristics of an acetic acid/1-methylimidazole (1-MI) mixture, showing higher electrical conductivity than either neat acetic acid or neat 1-MI, yet consisting of electrically neutral molecules, are reported. We have applied soft X-ray spectroscopy to reveal the electronic states of acetic acid in the acetic acid/1-MI mixture at various mole fractions of acetic acid (χHOAc). The results show that the amount of acetic acid monomer increases in the region of especially high electrical conductivity and the amount of complex of acetic acid and 1-MI formed by sharing molecular orbitals increases in the low electrical conductivity region. There is a little amount of acetic acid monomer in the low electrical conductivity region because the complex inhibits acetic acid from creating its monomer. These results suggest the possibility that the acetic acid monomer is related to electrical conduction.