Hydrodynamics of molecular rotors in lipid membranes
Fuente:
arXiv
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| Acceso en línea: | |
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| _version_ | 1866929626310246400 |
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| author | Suja, Vinny C. Oppenheimer, Naomi Stone, Howard A. |
| author_facet | Suja, Vinny C. Oppenheimer, Naomi Stone, Howard A. |
| contents | Molecular rotors form twisted conformations upon photoexcitation, with their fluorescent relaxation time serving as a measure of viscosity. They have been used to assess membrane viscosities but yield higher values compared to other methods. Here, we show that the rotor's relaxation time is influenced by a combination of membrane viscosity and interleaflet friction. We present a theory for the relaxation time and obtain a correction factor that accounts for the discrepancy. If the membrane's viscosity is known, molecular rotors may enable the extraction of the elusive interleaflet friction. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_01280 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Hydrodynamics of molecular rotors in lipid membranes Suja, Vinny C. Oppenheimer, Naomi Stone, Howard A. Soft Condensed Matter Biological Physics Molecular rotors form twisted conformations upon photoexcitation, with their fluorescent relaxation time serving as a measure of viscosity. They have been used to assess membrane viscosities but yield higher values compared to other methods. Here, we show that the rotor's relaxation time is influenced by a combination of membrane viscosity and interleaflet friction. We present a theory for the relaxation time and obtain a correction factor that accounts for the discrepancy. If the membrane's viscosity is known, molecular rotors may enable the extraction of the elusive interleaflet friction. |
| title | Hydrodynamics of molecular rotors in lipid membranes |
| topic | Soft Condensed Matter Biological Physics |
| url | https://arxiv.org/abs/2408.01280 |