Room-temperature ionic liquids physicochemical properties

Tokuda, H., Hayamizu, K., Ishii, K. et al.. Physicochemical properties and structures of room temperature ionic liquids. 1. variation of anionic species, /. Phys. Chem. B, 108,16593,2004. 

Tokuda H, Tsuzuki S, Susan MABH et al. (2006) How ionic are room-temperature ionic liquids An indicator of the physicochemical properties. J Phys Chem B 110 19593-19600... 

M. N., and Dupont, J. 2004. Organoindate room temperature ionic liquid synthesis, physicochemical properties and application. Synthesis 1155-1158. 

Tokuda, H. Islrii, K. Susan, M. A. B. H. Tsuzuki, S. Hayamizu, K. Watanabe, M., Physicochemical Properties and Structures of Room-Temperature Ionic Liquids. 3. Variation of Cationic Structures J. Phys. Chem. B 2006,110, 2833-2839. 

Yoshii K, Yamaji K, Tsuda T et al (2013) Physicochemical properties of tri-n-butylalkylpho-sphonium cation-based room-temperature ionic liquids. J Phys Chem B 117 15051-15059... 

Tokuda H, Ishii K, Susan M, Tsuzuki S, Hayamizu K, Watanabe M (2006) Physicochemical properties and structures of room-temperature ionic liquids. 3. Variation of cationic structures. J Phys Chem B 110 2833-2839... 

Depending on the combination of the cation and the anion, ILs can have either hydrophilic or hydrophobic character. The most frequently investigated ILs are based on imidazoliurn cations. Anions such as halides, acetate, nitrate and ethylsufate form hydrophilic ILs while anions such as bis(trifluoromethylsulfonyl)imide and hexafluorophosphate lead to hydrophobic ILs. Apart from these aprotic imidazoliurn or pyridinium based ionic liquids there was recently a growing interest in protic ionic liquids (PILs). A comprehensive overview about types and physicochemical properties of PILs was currently given in a review of Greaves Drummond (Greaves Drummond 2007). Ethylammonium nitrate (EAN), which represents the first room temperature ionic liquid described in literature, has already been reported in 1914 (Walden 1914) and is nowadays probably the most frequently studied PIL. 

---