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  Solvation in ionic liquids with polymer-grafted nanoparticles

Liu, S., Walton, M. J., Tarakina, N. V., & Akcora, P. (2020). Solvation in ionic liquids with polymer-grafted nanoparticles. The Journal of Physical Chemistry B, 124(23), 4843-4850. doi:10.1021/acs.jpcb.0c02813.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-76BA-4 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-A3FD-5
Genre: Journal Article

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 Creators:
Liu, Siqi, Author
Walton, Mia J., Author
Tarakina, Nadezda V.1, Author              
Akcora, Pinar, Author
Affiliations:
1Nadezda V. Tarakina, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_2522693              

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Free keywords: Polymer-grafted nanoparticles, ionic liquid, conductivity, solvation, imaging
 Abstract: Polymer-grafted nanoparticles stabilized in ionic liquid (IL)-solvent mixtures are investigated using transmission electron microscopy, dynamic light scattering and electrochemical impedance spectroscopy. The ionic conductivity of IL/solvent mixtures with the polymer-grafted nanoparticles is found to be higher than nanoparticles in the IL. These particles offer additional interactions between polymer and IL, which can mitigate solvation in ILs with solvents. Motivated by this, we present the conductivity data of 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide (HMIM-TFSI) with PMMA-grafted particles in good and bad solvents and further discuss how graft density influences the swelling of PMMA and solvation characteristics of HMIM-TFSI. We found that HMIM-TFSI/acetonitrile containing high grafting density particles has higher conductivity than HMIM-TFSI/methanol mixture with grafted particles. Thus, solubility of PMMA in acetonitrile and preferential interactions between PMMA/HMIM-TFSI are shown to govern the swelling, solvation and conductive properties of IL with the polymer-grafted nanoparticles.

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Language(s): eng - English
 Dates: 2020-05-182020
 Publication Status: Published in print
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 Identifiers: DOI: 10.1021/acs.jpcb.0c02813
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Title: The Journal of Physical Chemistry B
  Other : J. Phys. Chem. B
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Chemical Society
Pages: - Volume / Issue: 124 (23) Sequence Number: - Start / End Page: 4843 - 4850 Identifier: ISSN: 1520-6106