Application of Neutron Scattering in Amino Acid Crystals – Structural and Dynamical Information
( Neutron Scattering )
Publication series ： Neutron Scattering
Author： Paulo T.C. Freire José E.M. Pereira and Heloisa N. Bordallo
Publisher： IntechOpen
Publication year： 2016
E-ISBN: INT6069462198
P-ISBN(Paperback): 9789535122760
P-ISBN(Hardback): 9789535122760
Subject： O57 Nuclear physics, high energy physics
Keyword： 原子核物理学、高能物理学
Language： ENG
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Application of Neutron Scattering in Amino Acid Crystals – Structural and Dynamical Information
Description
In this work results of neutron powder diffraction and inelastic neutron scattering on aliphatic amino acid (L-alanine, L-valine and L-leucine) crystals are presented. The study allows inferring important informations about both the stability of the structures and the dynamics of phase transitions. In particular, it was possible to compare the behavior of different amino acids and to infer that changes in the mean-square displacements observed for two deuterated forms of L-alanine ND3+ – C2H4 – CO2- and NH3+ – C2D4 – CO2- are due to a structural rearrangement related to thermally activated amplitude reorientation of NH3+ and CO2-. Conformation changes in L-valine and L-leucine related to the phase transition are also discussed.
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