In order to study the molecular interactions of two (ILS) [BMIM][C8SO4] and [MOIM]Cl with amino acids (AA) (AA= L-tyr, L-phe) in aqueous medium, molar conductivities () at three different temperatures were utilised. The behaviour of the ILs and the chosen amino acids, as well as the spontaneity of the process, were examined by spectroscopic measurements. Since amino acids form the foundation of proteins, they are employed as model substances. Using 1H NMR spectroscopy, it was also possible to see how the electronic states of various protons in ILs changed when various amino acids were present. All the results have been interpreted in terms of possible molecular interactions using the order of ([BMIM] [C8SO4] + L-tyr]> ([MOIM]Cl + L-tyr)> ([BMIM][C8SO4] + L-phe)> ([MOIM]Cl + L-phe] in water. Understanding the mixing effect and other intricate biological processes that take place between amino acids and the selected ionic liquids will be made much easier thanks to the experimental parameters that have been collected. The results obtained from various spectroscopic and conductance measures are further supported by the considerable chemical shifts of ILs protons in the presence of amino acids in 1HNMR experiments.

Author(s) Details:

Sukdev Majumder,
Department of Chemistry, University of North Bengal, Darjeeling – 734 013, West Bengal, India.

Mitali Kundu,
Department of Chemistry, University of North Bengal, Darjeeling – 734 013, West Bengal, India.

Raja Ghosh,
Department of Chemistry, University of North Bengal, Darjeeling – 734 013, West Bengal, India.

Ranjoy Das,
Department of Chemistry, University of North Bengal, Darjeeling – 734 013, West Bengal, India.

Nitish Roy,
Department of Chemistry, University of North Bengal, Darjeeling – 734 013, West Bengal, India.

Debadrita Roy,
Department of Chemistry, University of North Bengal, Darjeeling – 734 013, West Bengal, India.

Sanjoy barman,
Department of Chemistry, University of North Bengal, Darjeeling – 734 013, West Bengal, India.

Niloy Roy,
Department of Chemistry, University of North Bengal, Darjeeling – 734 013, West Bengal, India.

Biplab Rajbanshi,
Department of Chemistry, University of North Bengal, Darjeeling – 734 013, West Bengal, India.

Mahendra Nath Roy,
Department of Chemistry, University of North Bengal, Darjeeling – 734 013, West Bengal, India.

Please see the link here:  https://stm.bookpi.org/PCSR-V2/article/view/7565

Keywords:  Ionic liquids, molecular interactions, association constant.