Connections Between Mathematical Models of Prebiotic Evolution and Homochirality

Blanco, Celia; Chen, Irene

doi:10.1007/978-3-319-93584-3_9

Cited by 2 publications

(3 citation statements)

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“…It is worth noting that the solubility difference between crystal sizes (Gibbs–Thomson effect) is only significant between tiny, just visible crystals. , In this respect, it is experimentally well-known that the signature of a successful Viedma experiment is when thorough grinding leads to tiny crystals, generally milkylike suspensions: gentle crystal fragmentation does not lead easily to deracemization Theoretical models and simulations in order to explain the deracemization process. ,,− Many experimental reports have been published with the objective to prove or to rule out hypotheses concerning the mechanism of the deracemization (see section ). ,,,− The discussion on the mechanisms of the Viedma deracemization may not be settled yet.…”

Section: Chiral Polarization Forcesmentioning

confidence: 99%

“…Theoretical models and simulations in order to explain the deracemization process. ,,− Many experimental reports have been published with the objective to prove or to rule out hypotheses concerning the mechanism of the deracemization (see section ). ,,,− The discussion on the mechanisms of the Viedma deracemization may not be settled yet.…”

Section: Chiral Polarization Forcesmentioning

confidence: 99%

“…The growth, from racemic mixtures of amino acids of isotactic homochiral chains by the template growth mechanism, corresponds to replicator autocatalysis. The coupling of such a synthetic network to an irreversible fragmentation of the final polymer toward intermediate size clusters through a different pathway than that of their growth could lead to a Viedma-like deracemization, 232 i.e., a selection of one of the two enantiomeric manifolds. However, in this specific case, it appears that the autocatalytic order is too low to achieve SMSB.…”

Section: Behind the Soai Reactionmentioning

confidence: 99%

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Spontaneous Deracemizations

et al. 2021

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Spontaneous deracemizations is a challenging, multidisciplinary subject in current chirality research. In the absence of any chiral inductors, an achiral substance or a racemic composition is driven into an enantioenriched or even homochiral state through a selective energy input, e.g., chemical potential, photoirradiation, mechanical grinding, ultrasound waves, thermal gradients, etc. The most prominent examples of such transformations are the Soai reaction and the Viedma deracemization. In this review, we track the most recent developments in this topic and recall that many other deracemizations have been reported for solutions from mesophases to conglomerate crystallizations. A compiled set of simply available achiral organic, inorganic, organometallic, and MOF compounds, yielding conglomerate crystals, should give the impetus to realize new experiments on spontaneous deracemizations. Taking into account thermodynamic constraints, modeling efforts have shown that structural features alone are not sufficient to describe spontaneous deracemizations. As a guideline of this review, particular attention is paid to the physicochemical origin and symmetry requirements of such processes.

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