Hand-holding and releasing between the anion and cation to change their macroscopic behavior in water

• 作者: Kenji Takahashi Kosuke Kuroda Yumiko Shimada
• 来源期刊: 绿色能源与环境:英文版
• 学科: 工学
• 关键词: Ionic liquid ZWITTERION Phase separation Dynamic COVALENT bond
• 年，卷（期）: 2019,（2）
• 页码范围: 127-130
• 页数: 4页
• 分类号: TK

摘要

Despite the similarity of ionic liquid and zwitterion,their some properties such as conductivity and hydrophobicity are different.Here we developed a novel phosphonium salt having a dynamic covalent bond between anion and cation,enabling reversible structural shift between free ion pair and zwitterion.With the phosphonium salt,control of the macroscopic phase behavior in aqueous solution,i.e.forming mono-or biphasic systems,upon exposure to an acid or base was reversibly achieved,based on the structural shift of the phosphonium salt.CO2/N2 bubbling reversibly changed the phase behavior as well as acid/base,leading to green separation systems.