Combining ionic liquids and polyethylene glycols to boost the hydrophobic-hydrophilic range of aqueous biphasic systems

resumo

This work reveals, for the first time, that polymer-ionic-liquid-based aqueous biphasic systems (ABS) exhibit a much wider hydrophilic-hydrophobic range than conventional systems reported to date. Three probe dyes were used to demonstrate that either the polymer-rich or the ionic-liquid-rich layer can serve as the most hydrophobic phase. It was found that the phase polarities can be easily tuned by the choice of an appropriate ionic liquid.

palavras-chave

HUMAN-SERUM ALBUMIN; 2-PHASE SYSTEMS; POLY(ETHYLENE GLYCOL); EXTRACTION; WATER; PARTITION; BEHAVIOR; SALTS; SOLUBILITY; SEPARATION

categoria

Chemistry; Physics

autores

Pereira, JFB; Rebelo, LPN; Rogers, RD; Coutinho, JAP; Freire, MG

nossos autores

agradecimentos

This work was financed by national funding from FCT through projects PTDC/QUI-QUI/121520/2010 and Pest-C/CTM/LA0011/2013 and grant SFRH/BD/60228/2009 of J.F.B. Pereira.

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