The Effect of Polymerization of Ionic Liquid [C<sub>4</sub>Vim]Br on Phase Behavior and Partitioning of L-tryptophan: Experimental and Molecular Dynamics Study

Petr A. Korchak; Evgenia A. Safonova; Igor Yu. Gotlib; Alexey I. Victorov

doi:10.1007/s10118-026-3631-8

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The Effect of Polymerization of Ionic Liquid [C₄Vim]Br on Phase Behavior and Partitioning of L-tryptophan: Experimental and Molecular Dynamics Study

RESEARCH ARTICLE | Updated：2026-07-01

- The Effect of Polymerization of Ionic Liquid [C₄Vim]Br on Phase Behavior and Partitioning of L-tryptophan: Experimental and Molecular Dynamics Study
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- The Effect of Polymerization of Ionic Liquid [C₄Vim]Br on Phase Behavior and Partitioning of L-tryptophan: Experimental and Molecular Dynamics Study
- Chinese Journal of Polymer Science 2026年44卷第7期页码：2352-2360
- Affiliations：
  
  Institute of Chemistry, Saint Petersburg State University, Saint Petersburg 199034, Russia
- Author bio：
  
  p.korchak@spbu.ru
- Funds：
  
  This work was financially supported by the Russian Science Foundation (No. Project 20-13-00038). NMR measurements were performed at the Research Park of St. Petersburg State University (“Center for Magnetic Resonance”).;The authors declare no interest conflict.Electronic supplementary information (ESI) is available free of charge in the online version of this article at http://doi.org/10.1007/s10118-026-3631-8.Data supporting the findings of this study are available from the corresponding author upon request.
- DOI：10.1007/s10118-026-3631-8
  中图分类号：
- 收稿：2026-01-04，
  
  修回：2026-02-08，
  
  录用：2026-02-23，
  
  网络首发：2026-06-24，
  
  纸质出版：2026-07-05
- Accepted：
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Korchak, P. A.; Safonova, E. A.; Gotlib, I. Y.; Victorov, A. I. The effect of polymerization of ionic liquid [C₄Vim]Br on phase behavior and partitioning of l-tryptophan: experimental and molecular dynamics study. Chinese J. Polym. Sci. 2026, 44, 2352–2360 DOI: 10.1007/s10118-026-3631-8.

Petr A. Korchak, Evgenia A. Safonova, Igor Yu. Gotlib, et al. The Effect of Polymerization of Ionic Liquid [C₄Vim]Br on Phase Behavior and Partitioning of L-tryptophan: Experimental and Molecular Dynamics Study[J]. Chinese Journal of Polymer Science, 2026, 44(7): 2352-2360. DOI: 10.1007/s10118-026-3631-8.
Korchak, P. A.; Safonova, E. A.; Gotlib, I. Y.; Victorov, A. I. The effect of polymerization of ionic liquid [C₄Vim]Br on phase behavior and partitioning of l-tryptophan: experimental and molecular dynamics study. Chinese J. Polym. Sci. 2026, 44, 2352–2360 DOI: 10.1007/s10118-026-3631-8. DOI：

Petr A. Korchak, Evgenia A. Safonova, Igor Yu. Gotlib, et al. The Effect of Polymerization of Ionic Liquid [C₄Vim]Br on Phase Behavior and Partitioning of L-tryptophan: Experimental and Molecular Dynamics Study[J]. Chinese Journal of Polymer Science, 2026, 44(7): 2352-2360. DOI: 10.1007/s10118-026-3631-8. DOI：

摘要

Polymerization of Ionic liquid significantly increases the heterogeneous region in aqueous biphasic systems but decreases the extraction efficiency. Molecular dynamics simulations confirm the unfavorable behavior of the extraction medium.

Abstract

In recent decades

there is growing interest in various applications of polymerized ionic liquids (PILs)

particularly in the aqueous biphasic systems (ABSs) used as media for extraction of solutes. In this work

we report new experimental data on the binodal curve and tie lines in the ABSs containing PIL and non-polymerized ionic liquid (IL): poly-[C

Vim

]

Br-K

-H

O and [C

Vim

]

Br-K

-H

O at 298.15 K. For the ABS with PIL

the partition coefficient of L-tryptophan between the liquid phases is obtained from experiment and compared with our previous data on ABS [C

mim

]

Br-K

-H

O containing non-polymerized IL. We conclude that the ABS containing poly-[C

Vim

]

Br has a lower extraction efficiency than the ABS based on non-polymerized ILs. To elucidate the mechanism underlying such behavior of the PIL-containing mixture

we performed MD simulations of PIL-rich aqueous mixtures in presence of K

and L-tryptophan. We obtained diffusion coefficients of low molecular mass ions and water

and data on the distribution of these species around polycation over a range of mixture compositions. MD data show that poly-[C

Vim

]

Br exhibits no favorable selectivity towards L-tryptophan anions in the prese

nce of phosphate background. This confirms unfavorable combination of poly-[C

Vim

]

Br with phosphate for the extraction of L-tryptophan

in accord with our experimental findings.

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Keywords

references

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The Effect of Polymerization of Ionic Liquid [C4Vim]Br on Phase Behavior and Partitioning of L-tryptophan: Experimental and Molecular Dynamics Study

The Effect of Polymerization of Ionic Liquid [C4Vim]Br on Phase Behavior and Partitioning of L-tryptophan: Experimental and Molecular Dynamics Study

DOI：10.1007/s10118-026-3631-8

摘要

Abstract

关键词

Keywords

references

The Effect of Polymerization of Ionic Liquid [C₄Vim]Br on Phase Behavior and Partitioning of L-tryptophan: Experimental and Molecular Dynamics Study

The Effect of Polymerization of Ionic Liquid [C₄Vim]Br on Phase Behavior and Partitioning of L-tryptophan: Experimental and Molecular Dynamics Study