High stability diionic liquid salts

摘要

The present invention relates to dicationic liquid salts comprising a dicationic species of formula A + -B-A '+ where one of A and A' is an imidazolium cation and the other is a phosphonium cation as defined herein and at least one counter anion. The invention further relates to use of such dicationic liquid salts as solvents, for separating chemical mixtures and for various detection and analytical techniques such as ESI-MS and as a stationary phase in a gas chromatographic column. Further provided are devices for such detection and analytical techniques comprising one or more dicationic liquids salts.