Matches in SemOpenAlex for { <https://semopenalex.org/work/W1995736070> ?p ?o ?g. }
- W1995736070 abstract "We present the results of ab initio calculations of the lattice dynamical and dielectric properties of the L-amino acids L-alanine, L-leucine, and L-isoleucine. Normal-mode frequencies and dielectric permittivity tensors are obtained using density-functional perturbation theory implemented within the plane-wave pseudopotential approximation. IR spectra are calculated and are used to analyze the effects of intermolecular interactions and zwitterionization upon the lattice dynamics. It is found that vibronic modes associated with the carboxy and amino functional groups undergo modification from their free-molecule values due to the presence of hydrogen bonds. The role of macroscopic electric fields set up by zone-center normal modes in the lattice dynamics is investigated by analysis of the Born effective charge. Calculated permittivity tensors are found to be greater than would be obtained by a naive use of the isolated molecular values, indicating the role of intermolecular interactions in increasing molecular polarizability." @default.
- W1995736070 created "2016-06-24" @default.
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- W1995736070 date "2006-08-01" @default.
- W1995736070 modified "2023-10-16" @default.
- W1995736070 title "Lattice dynamical and dielectric properties of L-amino acids" @default.
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- W1995736070 doi "https://doi.org/10.1103/physrevb.74.064301" @default.
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