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850591.pdf (1.79 MB)

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Data de publicació

2023

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cc-by (c) A Arango-Restrepo et al., 2023
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/217047

Chiral symmetry breaking induced by energy dissipation

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Recurs relacionat

https://doi.org/10.1039/D2CP05939H

Resum

Spontaneous chiral symmetry breaking is observed in a wide variety of systems on very different scales, from the subatomic to the cosmological. Despite its generality and importance for a large number of applications, its origin is still a matter of debate. It has been shown that the existence of a difference between the energies of the intermediate states of optical enantiomers leads to disparate production rates and thus to symmetry breaking. However, it is still unclear why this occurs. We measured for the first time the optical rotation angle of NaClO3 enantiomeric crystals in solution during their formation and found that the amount of energy needed to induce the enantiomeric excess is exactly the same as the energy dissipated per mole of solid salt calculated from the entropy production obtained from the proposed model. The irreversible nature of the process leading to entropy production thus explains the chiral symmetry breaking in the salt crystals studied. The proposed method could be used to explain the formation of self-organised structures generated by self-assembly of enantiomers arising from chiral symmetry breaking, such as those emerging in the production of advanced materials and synthetic biological tissues.

Matèries

Quiralitat, Energia, Termodinàmica

Matèries (anglès)

Chirality, Energy, Thermodynamics

Citació

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Articles publicats en revistes (Física Aplicada)

Citació

ARANGO-RESTREPO, Andrés, et al. Chiral symmetry breaking induced by energy dissipation. Physical Chemistry Chemical Physics. 2023. Vol. 25, num. 9238-9248. ISSN 1463-9076. [consulted: 28 of August of 2026]. Available at: https://hdl.handle.net/2445/217047

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