"Washing-out" ionic liquids from polyethylene glycol to form aqueous biphasic systems

被引:0
作者
Tome, Luciana I. N. [1 ]
Pereira, Jorge F. B. [1 ]
Rogers, Robin D. [2 ,3 ]
Freire, Mara G. [1 ]
Gomes, Jose R. B. [1 ]
Coutinho, Joao A. P. [1 ]
机构
[1] Univ Aveiro, CICECO, Dept Quim, P-3810193 Aveiro, Portugal
[2] Univ Alabama, Ctr Green Mfg, Tuscaloosa, AL 35487 USA
[3] Univ Alabama, Dept Chem, Tuscaloosa, AL 35487 USA
关键词
HOFMEISTER SERIES; 2-PHASE SYSTEMS; EXTRACTION; POLYMERS; SALTS; BOOST;
D O I
10.1039/c3cp54047b
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The molecular-level mechanisms behind the formation of aqueous biphasic systems (ABS) composed of ionic liquids (ILs) and polymers are hitherto not completely understood. For the first time, it is herein shown that polymer-IL-based ABS are a result of a ``washing-out'' phenomenon, and not of a salting-out effect of the IL over the polymer as assumed in the past few years. Novel evidence is herein provided by experimental results combined with molecular dynamics (MD) simulations and density functional theory (DFT) calculations.
引用
收藏
页码:2271 / 2274
页数:4
相关论文
共 34 条
[11]   Hydration of sodium, potassium, and chloride ions in solution and the concept of structure maker/breaker [J].
Mancinelli, R. ;
Botti, A. ;
Bruni, F. ;
Ricci, M. A. ;
Soper, A. K. .
JOURNAL OF PHYSICAL CHEMISTRY B, 2007, 111 (48) :13570-13577
[12]   Evaluation of the impact of phosphate salts on the formation of ionic-liquid-based aqueous biphasic systems [J].
Mourao, Teresa ;
Claudio, Ana Filipa M. ;
Boal-Palheiros, Isabel ;
Freire, Mara G. ;
Coutinho, Joao A. P. .
JOURNAL OF CHEMICAL THERMODYNAMICS, 2012, 54 :398-405
[13]   Evaluation of Cation Influence on the Formation and Extraction Capability of Ionic-Liquid-Based Aqueous Biphasic Systems [J].
Neves, Catarina M. S. S. ;
Ventura, Sonia P. M. ;
Freire, Mara G. ;
Marrucho, Isabel M. ;
Coutinho, Joao A. P. .
JOURNAL OF PHYSICAL CHEMISTRY B, 2009, 113 (15) :5194-5199
[14]   Solvation and Stabilization of Metallic Nanoparticles in Ionic Liquids [J].
Pensado, Alfonso S. ;
Padua, Agilio A. H. .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2011, 50 (37) :8683-8687
[15]   Combining ionic liquids and polyethylene glycols to boost the hydrophobic-hydrophilic range of aqueous biphasic systems [J].
Pereira, Jorge F. B. ;
Rebelo, Luis Paulo N. ;
Rogers, Robin D. ;
Coutinho, Joao A. P. ;
Freire, Mara G. .
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2013, 15 (45) :19580-19583
[16]   Aqueous biphasic systems composed of ionic liquids and polymers: A platform for the purification of biomolecules [J].
Pereira, Jorge F. B. ;
Ventura, Sonia P. M. ;
Silva, Francisca A. e ;
Shahriari, Shahla ;
Freire, Mara G. ;
Coutinho, Joao A. P. .
SEPARATION AND PURIFICATION TECHNOLOGY, 2013, 113 :83-89
[17]   Extraction of tetracycline from fermentation broth using aqueous two-phase systems composed of polyethylene glycol and cholinium-based salts [J].
Pereira, Jorge F. B. ;
Vicente, Filipa ;
Santos-Ebinuma, Valeria C. ;
Araujo, Janete M. ;
Pessoa, Adalberto ;
Freire, Mara G. ;
Coutinho, Joao A. P. .
PROCESS BIOCHEMISTRY, 2013, 48 (04) :716-722
[18]   Ionic liquids as adjuvants for the tailored extraction of biomolecules in aqueous biphasic systems [J].
Pereira, Jorge F. B. ;
Lima, Alvaro S. ;
Freire, Mara G. ;
Coutinho, Joao A. P. .
GREEN CHEMISTRY, 2010, 12 (09) :1661-1669
[19]  
Powell G.M., 1980, HDB WATER SOLUBLE GU
[20]   Biphasic liquid mixtures of ionic liquids and polyethylene glycols [J].
Rodriguez, Hector ;
Francisco, Maria ;
Rahman, Mustafizur ;
Sun, Ning ;
Rogers, Robin D. .
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2009, 11 (46) :10916-10922