Switchable Chiral Selection of Aspartic Acids by Dynamic States of Brushite
- Zhejiang Univ. (China). Center for Biomaterials and Biopathways
- Zhejiang Univ. (China). Qiushi Academy for Advanced Studies
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Physical and Life Sciences
- Rutgers Univ., New Brunswick, NJ (United States). Dept. of Chemistry and Chemical Biology, Inst. of Marine and Coastal Sciences
- Zhejiang Univ. (China). Center for Biomaterials and Biopathways, Qiushi Academy for Advanced Studies
Here, we show the chiral recognition and separation of aspartic acid (Asp) enantiomers by achiral brushite due to the asymmetries of their dynamical steps in its nonequilibrium states. Growing brushite has a higher adsorption affinity to d-Asp, while l-Asp is predominant on the dissolving brushite surface. Microstructural characterization reveals that chiral selection is mainly attributed to brushite [101] steps, which exhibit two different configurations during crystal growth and dissolution, respectively, with each preferring a distinct enantiomer due to this asymmetry. Because these transition step configurations have different stabilities, they subsequently result in asymmetric adsorption. Furthermore, by varying free energy barriers through solution thermodynamic driving force (i.e., supersaturation), the dominant nonequilibrium intermediate states can be switched and chiral selection regulated. This finding highlights that the dynamic steps can be vital for chiral selection, which may provide a potential pathway for chirality generation through the dynamic nature.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC52-07NA27344
- OSTI ID:
- 1390026
- Report Number(s):
- LLNL-JRNL-548392; TRN: US1702366
- Journal Information:
- Journal of the American Chemical Society, Vol. 139, Issue 25; ISSN 0002-7863
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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