Journal
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
Volume 48, Issue 1, Pages 181-195Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s13369-022-06916-0
Keywords
Boron Nitride; C3H7NO3; Density functional theory; Serine; Wave function analysis
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Using density functional theory (DFT), this study investigates the intermolecular interactions between serine amino acid and different types of nanotubes. Various analysis methods were used to reveal the nature of these interactions and showed that physical adsorption is favored in all systems. The Al-doped nanotube exhibited higher adsorption energy compared to the others. The study suggests that amino acid molecules interacting with doped nanotubes can increase adsorption sensitivity and be used for designing nanocarriers.
Applying density functional theory (DFT), an attempt has been made to investigate the intermolecular interactions between the serine amino acid and pristine boron nitride, Al-doped boron nitride, and carbon boron nitride nanotubes (BNNT, BNAlNT, and BC2NNT, respectively). One of the most suitable basis functionals for the systems studied in this research is 6-311G (d), which has been used in both optimization calculations and calculations related to wave function analyses. The main part of this work is the study of various analyses that reveal the nature of the intermolecular interactions between the two components introduced above. The results of conceptual DFT, natural bond orbital (NBO), non-covalent interactions (NCI), and quantum theory of atoms in molecules (QTAIM) were consistent and favored physical adsorption in all systems. Al-doped nanotube provides more adsorption energy than others. The HOMO-LUMO energy gaps were as follows: BNNT: 6.545, BNAlNT: 8.127, and BC2NNT: 7.027 eV at B3LYP-D3/6-311G (d) model chemistry. The adsorption sensitivity increased when an amino acid molecule interacted with doped BNNT and could be used to design a nanocarrier for serine amino acid.
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