Interactions Between Sodium Ion and Constituents of Chitosan: DFT Study
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Science Publishing Group
Abstract
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This research article published by Science Publishing Group, 2015
Glucosamine and acetylglucosamine are the constituents of chitosan and chitin natural biopolymers. In the present study, the structure and properties of the D-glucosamine monomer (A), N-acetylglucosamine monomer (B), and ion-molecular adducts with Na+ cation have been explored. The equilibrium geometrical structure, vibrational spectra of the species have been determined, using the DFT/B3LYP method with the 6-31G(d) basis set. Larger basis sets up to 6-311++G(d,p) were utilized to compute energies of reactions between Na+ ion and A and B molecules. The exothermicity and spontaneous character of the adducts formation reactions have been confirmed.
Glucosamine and acetylglucosamine are the constituents of chitosan and chitin natural biopolymers. In the present study, the structure and properties of the D-glucosamine monomer (A), N-acetylglucosamine monomer (B), and ion-molecular adducts with Na+ cation have been explored. The equilibrium geometrical structure, vibrational spectra of the species have been determined, using the DFT/B3LYP method with the 6-31G(d) basis set. Larger basis sets up to 6-311++G(d,p) were utilized to compute energies of reactions between Na+ ion and A and B molecules. The exothermicity and spontaneous character of the adducts formation reactions have been confirmed.
Keywords
Vibrational Spectrum, Geometrical Structure