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    • NAWA "Solidarity with Ukraine - European Universities”

      20.03.2023

      On March 18 2023, the NanoBioMedical Centre hosted 25 vice-rectors of 25 partner universities in Ukraine.

    • New projects in NBMC

      30.05.2022

      Further projects financed by the National Science Center will be implemented at the NanoBioMedical Center.

    • START scholarships

      30.05.2022

      We are happy to announce that Dr. Jagoda Litowczenko-Cybulska has been awarded the START Scholarship 2022 of the Foundation for Polish Science (FNP) for the best young researchers in Poland. Additionally, we congratulate our employee, Dr. Eng. Artur Jędrzak, who received the START scholarship as part of a project submitted from the Poznań University of Technology.

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Highlighted Publications

Int. J. Mol. Sci., 2021, 22(11), 5935

Influence of Alkyl Chain Length on Thermal Properties, Structure, and Self-Diffusion Coefficients of Alkyltriethylammonium-Based Ionic Liquids

The application of ionic liquids (ILs) has grown enormously, from their use as simple solvents, catalysts, media in separation science, or electrolytes to that as task-specific, tunable molecular machines with appropriate properties. A thorough understanding of these properties and structure–property relationships is needed to fully exploit their potential, open new directions in IL-based research and, finally, properly implement the appropriate applications. In this work, we investigated the structure–properties relationships of a series of alkyltriethylammonium bis(trifluoromethanesulfonyl)imide [TEA-R][TFSI] ionic liquids in relation to their thermal behavior, structure organization, and self-diffusion coefficients in the bulk state using DSC, FT-IR, SAXS, and NMR diffusometry techniques. The phase transition temperatures were determined, indicating alkyl chain dependency. Fourier-transformed infrared spectroscopy studies revealed the structuration of the ionic liquids along with alkyl chain elongation. SAXS experiments clearly demonstrated the existence of polar/non-polar domains. The alkyl chain length influenced the expansion of the non-polar domains, leading to the expansion between cation heads in polar regions of the structured IL. 1H NMR self-diffusion coefficients indicated that alkyl chain elongation generally caused the lowering of the self-diffusion coefficients. Moreover, we show that the diffusion of anions and cations of ILs is similar, even though they vary in their size.
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