Solvent-Mediated Ion Pairing in Zwitterionic Systems: A Comprehensive Analysis
DOI:
https://doi.org/10.32628/IJSRST24121161Keywords:
Zwitterionic Systems, Solvent-Mediated Ion Pairing, Binary Solvent Mixtures, Solvation Dynamics, Hydrogen Bonding, DRS, NMRAbstract
This study explores solvent-mediated ion pairing in zwitterionic systems, a critical phenomenon in chemical and biological processes. Using a combination of experimental and computational approaches, the research investigates how solvent polarity, hydrogen bonding, and ion-solvent interactions influence ion pairing in zwitterionic compounds. Binary solvent mixtures, specifically water and Dimethyl Sulfoxide (DMSO), are employed to analyze the role of solvation dynamics. Conductometric and spectroscopic techniques (Raman and UV-Vis spectroscopy) are used to study ion-pair stability and solvation thermodynamics across varying solvent compositions and temperatures. Computational methods, including molecular dynamics simulations, provide insights into the structural evolution of solvation shells and the thermodynamic parameters of ion pairing. Findings reveal that solvent composition critically impacts zwitterion behavior, with DMSO-rich environments favoring loose solvation shells and increased ion-pair formation. This work offers valuable insights into optimizing solvent environments for applications in pharmaceuticals, catalysis, and energy storage systems.
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Buchner, R., Hefter, G., & May, P. M. (2011). Ion pairing in aqueous electrolyte solutions with biologically relevant anions. The Journal of Physical Chemistry B, 115(16), 2363–2374. https://doi.org/10.1021/jp201150q DOI: https://doi.org/10.1021/jp201150q
Iwahara, J., Esadze, A., & Zandarashvili, L. (2015). Physicochemical properties of ion pairs of biological macromolecules. Biomolecules, 5(4), 2435–2463. https://doi.org/10.3390/biom5042435 DOI: https://doi.org/10.3390/biom5042435
Krishnamoorthy, A. N., Zeman, J., Holm, C., & Smiatek, J. (2016). Preferential solvation and ion association properties in aqueous dimethyl sulfoxide solutions. Physical Chemistry Chemical Physics, 18(45), 31312–31322. https://doi.org/10.1039/C6CP05909K DOI: https://doi.org/10.1039/C6CP05909K
Pliego, J. R., Jr. (2021). The role of intermolecular forces in ionic reactions: The solvent effect, ion-pairing, aggregates, and structured environment. Organic & Biomolecular Chemistry, 19(9), 1900–1914. https://doi.org/10.1039/D0OB02413A DOI: https://doi.org/10.1039/D0OB02413A
Valsecchi, C. (2020). Solvent influence on imidazolium-based ionic liquid contact pairs. Journal of Molecular Liquids, 322, 114891. https://doi.org/10.1016/j.molliq.2020.114891 DOI: https://doi.org/10.1016/j.molliq.2020.113615
van der Vegt, N. F. A., Haldrup, K., Roke, S., Zheng, J., Lund, M., & Bakker, H. J. (2016). Water-mediated ion pairing: Occurrence and relevance. Chemical Reviews, 116(13), 7626–7641. https://doi.org/10.1021/acs.chemrev.5b00742 DOI: https://doi.org/10.1021/acs.chemrev.5b00742
Veroutis, E., & Kirchner, B. (2022). Solvation and ion-pairing effects of choline acetate electrolyte in protic and aprotic solvents studied by NMR titrations. ChemPhysChem, 23(1), 1–12. https://doi.org/10.1002/cphc.202100602 DOI: https://doi.org/10.1002/cphc.202100602
Yadav, S., & Chandra, A. (2017). Preferential solvation, ion pairing, and dynamics of concentrated aqueous solutions of divalent metal nitrate salts. The Journal of Chemical Physics, 147(24), 244503. https://doi.org/10.1063/1.4996273 DOI: https://doi.org/10.1063/1.4996273
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