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Journal of the Brazilian Chemical Society
Print version ISSN 0103-5053On-line version ISSN 1678-4790
PERNAK, Juliusz et al. Long alkyl chain bis-quaternary ammonium-based ionic liquids as biologically active xanthenes dyes. J. Braz. Chem. Soc. [online]. 2009, vol.20, n.5, pp.839-845. ISSN 0103-5053. http://dx.doi.org/10.1590/S0103-50532009000500006.
New examples of air-and moisture-stable, hydrophobic and hydrophilic bis-quaternary ammonium derived ionic liquids have been prepared. These ionic liquids have been proposed to act as biological active dyes with characteristic unique physicochemical properties, providing alternatives to some conventional anionic xanthene dyes such as eosine Y, fluorescein and erythrosine.
Keywords : ionic liquids; xanthene dyes.