Speaker
Description
Recent work has found that the identity of a surfactant's counter-ion can affect the critical micelle concentration, and the size and shape of resultant micelles in ionic liquid (IL) and choline-based deep eutectic solvents.[1,2] This indicates the presence of ion specific effects for micellisation in these neoteric solvents despite their high ionic strength.[3] This project examines this phenomenon further, by investigating a range of choline salts (chloride, bromide, and nitrate) in different nitrate-based ILs (ethylammonium, propylammonium, and ethanolammonium nitrate) via measurements taken on the Small Angle Neutron Diffractometer for Amorphous and Liquid Samples (SANDALS) beamline at ISIS. These results bring new insight into how ion specific effects can exist in high ionic strength neoteric solvents, and the parameters involved in controlling this surprising phenomenon.
(1) Dolan, A.; Atkin, R.; G. Warr, G. The Origin of Surfactant Amphiphilicity and Self-Assembly in Protic Ionic Liquids. Chemical Science 2015, 6 (11), 6189–6198. https://doi.org/10.1039/C5SC01202C.
(2) Sanchez-Fernandez, A.; S. Hammond, O.; J. Edler, K.; Arnold, T.; Doutch, J.; M. Dalgliesh, R.; Li, P.; Ma, K.; J. Jackson, A. Counterion Binding Alters Surfactant Self-Assembly in Deep Eutectic Solvents. Physical Chemistry Chemical Physics 2018, 20 (20), 13952–13961. https://doi.org/10.1039/C8CP01008K.
(3) Warr, G. G.; Atkin, R. Solvophobicity and Amphiphilic Self-Assembly in Neoteric and Nanostructured Solvents. Current Opinion in Colloid & Interface Science 2020, 45, 83–96. https://doi.org/10.1016/j.cocis.2019.12.009.
| Pronouns | He/Him |
|---|---|
| Students Only - Are you interested in AINSE student funding | No |
| Presenter Gender | Man |
| Which facility did you use for your research | None of the above |
| Condition of submission | Yes |
| Level of Expertise | Early Career <5 Years |
| Do you wish to take part in the Student Poster Slam | No |
