{"title":"Transformations of Imidazolium Ionic Liquids under the Influence of 60Co Gamma Radiation","authors":"N. P. Tarasova, A. A. Zanin, E. G. Krivoborodov","doi":"10.1134/S0012501622040017","DOIUrl":null,"url":null,"abstract":"<p>The comparative stability of ionic liquids containing alkyl-substituted imidazolium and phosphonium cations on exposure to gamma radiation (<sup>60</sup>Co source) under the same conditions has been studied for the first time. It has been shown that when exposed to <sup>60</sup>Co gamma radiation (an absorbed dose of up to 550 kGy) in the presence of air oxygen, phosphonium and imidazolium ionic liquids exhibit high radiolytic stability. Under these conditions, the yield of radiolytic products is no more than 1 wt %. At the same time, in contrast to phosphonium ionic liquids, imidazolium ionic liquids undergo radiolytic staining at absorbed doses in the range studied. Based on IR, UV, and <sup>1</sup>H NMR spectroscopy and known literature data, an assumption has been made about the most probable mechanisms of transformation of imidazolium cations of an ionic liquid under the influence of gamma radiation.</p>","PeriodicalId":532,"journal":{"name":"Doklady Physical Chemistry","volume":"503 2","pages":"39 - 44"},"PeriodicalIF":1.1000,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Doklady Physical Chemistry","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1134/S0012501622040017","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The comparative stability of ionic liquids containing alkyl-substituted imidazolium and phosphonium cations on exposure to gamma radiation (60Co source) under the same conditions has been studied for the first time. It has been shown that when exposed to 60Co gamma radiation (an absorbed dose of up to 550 kGy) in the presence of air oxygen, phosphonium and imidazolium ionic liquids exhibit high radiolytic stability. Under these conditions, the yield of radiolytic products is no more than 1 wt %. At the same time, in contrast to phosphonium ionic liquids, imidazolium ionic liquids undergo radiolytic staining at absorbed doses in the range studied. Based on IR, UV, and 1H NMR spectroscopy and known literature data, an assumption has been made about the most probable mechanisms of transformation of imidazolium cations of an ionic liquid under the influence of gamma radiation.
期刊介绍：
Doklady Physical Chemistry is a monthly journal containing English translations of current Russian research in physical chemistry from the Physical Chemistry sections of the Doklady Akademii Nauk (Proceedings of the Russian Academy of Sciences). The journal publishes the most significant new research in physical chemistry being done in Russia, thus ensuring its scientific priority. Doklady Physical Chemistry presents short preliminary accounts of the application of the state-of-the-art physical chemistry ideas and methods to the study of organic and inorganic compounds and macromolecules; polymeric, inorganic and composite materials as well as corresponding processes. The journal is intended for scientists in all fields of chemistry and in interdisciplinary sciences.
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