Synthesis, anti-microbial activities and anti-electrostatic properties of phosphonium-based ionic liquids

Green Chemistry Pub Date: 2005-10-26 DOI: 10.1039/B508499G

Abstract

A range of phosphonium ionic liquids having the generic formula [PR3R′]X (R and R′ are alkyl groups; X is halide, trifluoromethanesulfonate, bis(trifluoromethylsulfonyl)imide, nitrate, dialkylphosphinate, dicyanamide, decanoate, tetrafluoroborate, hexafluorophosphate, or diisobutyldithiophosphinate have been prepared, characterised, and tested for anti-microbial activity and anti-electrostatic properties. Within this group of phosphonium salts, in contrast to their 1-alkyl-3-methylimidazolium analogues, both cation structure and the type of anion have effects on their biological activity. The ionic liquids also showed high anti-electrostatic effect.

Graphical abstract: Synthesis, anti-microbial activities and anti-electrostatic properties of phosphonium-based ionic liquids
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