Biodegradable Naphthenic Acid Ionic Liquids: Synthesis, Characterization, and Quantitative Structure-Biodegradation Relationship
作者:Yinghao Yu、Xingmei Lu、Qing Zhou、Kun Dong、Hongwei Yao、Suojiang Zhang
DOI:10.1002/chem.200800620
日期:2008.12.8
restricts large-scale industrial applications of ionic liquids. Herein, ten biodegradable ionic liquids were prepared by a single, one-pot neutralization of choline and surrogate naphthenic acids. The structures of these naphthenic acid ionic liquids (NAILs) were characterized and confirmed by (1)H and (13)C NMR spectroscopy, IR spectroscopy, and elemental analysis, and their physical properties, such as densities
已经证实,常用的离子液体不容易生物降解。当最终处置或意外释放时,它们会在环境中积聚,这严重限制了离子液体的大规模工业应用。在此,通过一次,一锅地中和胆碱和替代的环烷酸,制备了十种可生物降解的离子液体。这些环烷酸离子液体(NAIL)的结构已通过(1)H和(13)C NMR光谱,IR光谱和元素分析以及其物理性质(例如密度,粘度,电导率,熔点)进行了表征和确认测定(T(m)),玻璃化转变温度(T(g))和分解开始温度(T(d))。更重要的是,研究表明,这些NAIL在有氧条件下的水生环境中将被快速,完全地生物降解,这使其成为在工业过程中使用的有吸引力的候选物。为了探索参与NAIL生物降解反应的潜在机理并寻求其在环境条件下的生物降解性的预测,选择了四个分子描述子:正辛醇/水分配系数的对数(log P),范德华体积(V( vdW)),最高占据分子轨道的能量(E(HOMO))和最低未占据分子轨道的能量(