화학공학소재연구정보센터
Chemical Physics Letters, Vol.687, 73-84, 2017
Theoretical and experimental approach on the molecular interactions of the DL-Alanine with an electrolytic environment
The molecular interactions that promote the stability of proteins and amino acids in saline solutions is a central topic of molecular biophysics. However, a well-supported molecular picture of the phenomena has not been established yet. In this paper, we studied as model system the mix between DL-Alanine in aqueous solutions of STP (Na2S2O3 center dot 5H(2)O) at different temperatures, from volumetric and viscometric properties. The thermophysical properties obtained indicate the presence of a strong preferential solvation, structure-making action and a possible salt in effect. Quantum chemical calculations and molecular dynamic (MD) simulations provide a new insight to support these arguments. (C) 2017 Elsevier B.V. All rights reserved.