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- W2018887988 abstract "The structural and electronic properties of four L-amino acids alanine, leucine, isoleucine, and valine have been investigated using density functional theory (DFT) and the generalized gradient approximation. Within the crystals, it is found that the constituent molecules adopt zwitterionic configurations, in agreement with experimental work. Lattice constants are found to be in good agreement with experimentally determined values, although certain discrepancies do exist due to the description of van der Waals interactions. We find that these materials possess wide DFT band gaps in the region of 5 eV, with electrons highly localized to the constituent molecules. It is found that the main mechanisms behind crystal formation are dipolar interactions and hydrogen bonding of a primarily electrostatic character, in agreement with current biochemical understanding of these systems. The electronic structure suggests that the amine and carboxy functional groups are dominant in determining band structure." @default.
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- W2018887988 date "2005-05-26" @default.
- W2018887988 modified "2023-09-23" @default.
- W2018887988 title "Structural and electronic properties of L-amino acids" @default.
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- W2018887988 doi "https://doi.org/10.1103/physrevb.71.195117" @default.
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