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Issue 10, 2009
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Phosphonium ionic liquids: design, synthesis and evaluation of biodegradability

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Abstract

The biodegradability of a range of phosphonium ionic liquids (ILs) was assessed using the CO2 headspace test (ISO 14593). Tetraalkylphosphonium cations in which one of the alkyl substituents contained ester, ether, alcohol or alkene functionality in order to promote biodegradation were targeted. These cations were paired with halide, triflimide and octylsulfate anions. In contrast to previously studied dialkylimidazolium and alkylpridinium ILs with incorporated ester moieties and octylsulfate anions, the phosphonium ILs showed relatively low levels of biodegradability.

Graphical abstract: Phosphonium ionic liquids: design, synthesis and evaluation of biodegradability

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Publication details

The article was received on 30 Apr 2009, accepted on 10 Jun 2009 and first published on 21 Jul 2009


Article type: Paper
DOI: 10.1039/B913057H
Green Chem., 2009,11, 1595-1604

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    Phosphonium ionic liquids: design, synthesis and evaluation of biodegradability

    F. Atefi, M. T. Garcia, R. D. Singer and P. J. Scammells, Green Chem., 2009, 11, 1595
    DOI: 10.1039/B913057H

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