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Investigation of solvent effects on armchair single-walled carbon nanotubes: A QM/MD study      
Yazarlar
Dr. Öğr. Üyesi Fatemeh MOLLAAMIN Dr. Öğr. Üyesi Fatemeh MOLLAAMIN
Kastamonu Üniversitesi, Türkiye
Özet
In this research, we studied solvent effects on the relative energies, dipole moment values, and structural properties of water, methanol, ethanol, and mixtures of them surrounding single-walled carbon nanotubes (SWCNT), by using molecular dynamics simulation. Calculations were carried out with the Hyper Chem program. We used different force fields to determine energy and other types of geometrical parameters on the particular SWCNT. Because of the differences among force fields, the energy of a molecule calculated using two different force fields will not be the same. In this study, differences in force fields was illustrated by comparing the energy calculated by using force fields MM+, Amber and OPLS. The quantum Mechanics (QM) calculations were carried out with the GAUSSIAN 98 program based on density functional theory (DFT) at the B1LYP/3-21G level. In this study, we have compared gas phase and solvent calculations that considered solvents such as water, methanol and ethanol and a mixture of them. Therefore, we investigate polar solvents effects on SWCNT within the Onsager self-consistent reaction field (SCRF) model using a Hartree-Fock method and the temperature effect on the stability of SWCNT in various solvents. Copyright © Taylor & Francis Group, LLC.
Anahtar Kelimeler
DFT | force field | molecular dynamics | Quantum mechanics | Solvent effect
Makale Türü Özgün Makale
Makale Alt Türü SCOPUS dergilerinde yayımlanan tam makale
Dergi Adı Fullerenes Nanotubes and Carbon Nanostructures
Dergi ISSN 1536-383X
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce
Basım Tarihi 05-2011
Cilt No 19
Sayı 4
Sayfalar 251 / 261
Doi Numarası 10.1080/15363831003721757
Makale Linki http://dx.doi.org/10.1080/15363831003721757