https://doi.org/10.1140/epjs/s11734-024-01155-w
Regular Article
Effect of stigmasterol-based mesogen and phytosphingosine on the Langmuir monolayer of DPPC
1
Department of Physics, Central University of Karnataka, Kadaganchi, 585367, Kalaburagi, Karnataka, India
2
Soft Condensed Matter Group, Raman Research Institute, C. V. Raman Avenue, 560080, Bengaluru, Karnataka, India
3
Department of Chemistry, NITTE Meenakshi Institute of Technology (NMIT), P. B. No. 6429, Yelahanka, 560064, Bengaluru, Karnataka, India
Received:
13
December
2023
Accepted:
25
March
2024
Published online:
3
April
2024
We have studied the effect of a novel stigmasterol-based mesogen (4-mercaptoalkyl benzoate of stigmasterol or 4MBS) and phytosphingosine (PHS molecules) on the Langmuir monolayer of 1, 2 dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) using the surface manometry technique. The mixed monolayers of 4MBS/DPPC and PHS/DPPC in different compositions are investigated using surface manometry. The surface pressure–area per molecule isotherms were analysed to determine the mechanical and thermodynamical aspects like phase transitions and stability of the mixed Langmuir monolayer. The Brewster angle microscope (BAM) was used for visualising the monolayer morphology. Our studies show that PHS and 4MBS molecules stabilise the liquid expanded (LE)–liquid condensed (LC) phase coexistence region of the DPPC monolayer.
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© The Author(s), under exclusive licence to EDP Sciences, Springer-Verlag GmbH Germany, part of Springer Nature 2024
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
