Journal
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
Volume 77, Issue 11, Pages -Publisher
PHYSICAL SOC JAPAN
DOI: 10.1143/JPSJ.77.113001
Keywords
homochirality; crystal growth; lattice gas model; grinding; kinetic Monte Carlo simulation; autocatalysis; recycling
Categories
Funding
- Japan Society for the Promotion of Science [19540410]
- Grants-in-Aid for Scientific Research [19540410] Funding Source: KAKEN
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To study the establishment of homochirality observed in the crystal growth experiment of chiral molecules from a Solution under grinding, we extend the lattice gas model of crystal growth as follows. A lattice site can be occupied by a chiral molecule in R or S form, or can be empty. Molecules form homoclusters by nearest neighbor bonds. They change their chirality if they are isolated monomers in the solution. Grinding is incorporated by Cutting and shuffling the system randomly. It is shown that Ostwald ripening without grinding is extremely slow to select chirality, if possible. Grinding alone also cannot achieve chirality selection. For the accomplishment of homochirality, we need an enhanced chirality change on crystalline surface. With this autocatalytic effect and the recycling of monomers due to grinding, an exponential increase of crystal enantiomeric excess to homochiral state is realized.
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