The Rouse ring chain with attractive harmonic potential of spherical symmetry
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866909510340182016 |
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| author | Fatkullin, Nail Mattea, Carlos Lindt, Kevin Stapf, Siegfried Kruteva, Margarita |
| author_facet | Fatkullin, Nail Mattea, Carlos Lindt, Kevin Stapf, Siegfried Kruteva, Margarita |
| contents | The static and dynamic properties of a cyclic Rouse chain modified by the introduction of an effective, spherically symmetric, attracting potential of entropic nature is studied. It is shown that a relatively weak potential can lead to a strong contraction of the polymer chain: the radius of gyration becomes much smaller compared to the size of free cyclic chain. The pronounced decrease in the terminal relaxation time of cyclic macromolecules compared to the Rouse relaxation time leads to a lengthening of the time interval for the transition to the normal, i.e. the Fickian, diffusion regime, generating a pseudo-plateau at increasing molecular mass for the time dependence of segmental mean squared segmental displacement. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_12324 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The Rouse ring chain with attractive harmonic potential of spherical symmetry Fatkullin, Nail Mattea, Carlos Lindt, Kevin Stapf, Siegfried Kruteva, Margarita Soft Condensed Matter Chemical Physics The static and dynamic properties of a cyclic Rouse chain modified by the introduction of an effective, spherically symmetric, attracting potential of entropic nature is studied. It is shown that a relatively weak potential can lead to a strong contraction of the polymer chain: the radius of gyration becomes much smaller compared to the size of free cyclic chain. The pronounced decrease in the terminal relaxation time of cyclic macromolecules compared to the Rouse relaxation time leads to a lengthening of the time interval for the transition to the normal, i.e. the Fickian, diffusion regime, generating a pseudo-plateau at increasing molecular mass for the time dependence of segmental mean squared segmental displacement. |
| title | The Rouse ring chain with attractive harmonic potential of spherical symmetry |
| topic | Soft Condensed Matter Chemical Physics |
| url | https://arxiv.org/abs/2501.12324 |