Surfactant-free CO2-based microemulsion-like systems

Robert F. Hankel; Paula E. Rojas; Mary Cano-Sarabia; Santi Sala; Jaume Veciana; Andreas Braeuer; Nora Ventosa

doi:10.1039/C4CC01804D

Surfactant-free CO₂-based microemulsion-like systems†

Robert F. Hankel,‡^a Paula E. Rojas,‡^bc Mary Cano-Sarabia,^bc Santi Sala,^bc Jaume Veciana,^bc Andreas Braeuer*^a and Nora Ventosa*^bc

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* Corresponding authors

^a Lehrstuhl für Technische Thermodynamik (LTT) and Erlangen Graduate School in Advanced Optical Technologies (SAOT) Friedrich-Alexander Universitaet Erlangen-Nuernberg, Paul-Gordan-Strasse 6, 91052 Erlangen, Germany
E-mail: Andreas.Braeuer@fau.de
Tel: +49 9131 8525853

^b Department of Molecular Nanoscience and Organic Materials, Institut de Ciència de Materials de Barcelona (ICMAB- CSIC), Campus la Universitat Autonoma Barcelona (UAB), 08193 Bellaterra, Spain
E-mail: ventosa@icmab.es
Tel: +34 935801853

^c CIBER-BBN: Campus Río Ebro - Edificio I+D Bloque 5, 1a planta C/ Poeta Mariano Esquillor s/n, 50018 Zaragoza, Spain

Abstract

The presence of water-rich and water-lean nanodomains in a transparent, pressurized “water–acetone–CO₂” mixture was revealed by Raman spectroscopy. This nano-structured liquid can be classified as a surfactant-free microemulsion-like system and has the capacity to dissolve hydrophobic compounds, such as ibuprofen, in the presence of large amounts of water. This finding opens new opportunities in the fields of confined reactions and material templating.

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DOI: https://doi.org/10.1039/C4CC01804D
Article type: Communication
Submitted: 10 Mar 2014
Accepted: 30 May 2014
First published: 04 Jun 2014
This article is Open Access

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Chem. Commun., 2014,50, 8215-8218

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Surfactant-free CO₂-based microemulsion-like systems

R. F. Hankel, P. E. Rojas, M. Cano-Sarabia, S. Sala, J. Veciana, A. Braeuer and N. Ventosa, Chem. Commun., 2014, 50, 8215 DOI: 10.1039/C4CC01804D

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Chemical Communications