Showing 121 - 140 results of 431 for search '"density functional theory"', query time: 0.08s Refine Results
  1. 121

    FT-IR, Laser-Raman, UV-Vis, and NMR Spectroscopic Studies of Antidiabetic Molecule Nateglinide by Tuba Özdemir Öge

    Published 2018-01-01
    “…The other parameters including geometric structures, optimized geometry, vibrational frequencies, dipole moments, infrared and Raman intensities, and HOMO and LUMO energies of nateglinide molecules were studied using the density functional theory. In addition, the 13C and 1H NMRs were calculated using Gaussian 09 program with the DFT/B3LYP method at the 6-31G + (d, p) basis set. …”
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  2. 122

    First-principles and machine-learning approaches for interpreting and predicting the properties of MXenes by José D. Gouveia, Tiago L. P. Galvão, Kais Iben Nassar, José R. B. Gomes

    Published 2025-02-01
    “…This review highlights computational studies using density functional theory and machine-learning approaches to explore their structure (stacking, functionalization, doping), properties (electronic, mechanical, magnetic), and application potential. …”
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  3. 123

    Generalized approach for rapid entropy calculation of liquids and solids by Qi-Jun Hong, Zi-Kui Liu

    Published 2025-02-01
    “…The electronic entropy is determined through the temporal average acquired from density functional theory MD simulations. The vibrational entropy, typically the predominant contributor to the total entropy, even within the liquid state, is evaluated by computing the phonon density of states via the velocity autocorrelation function. …”
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  4. 124

    Local Molecular Reactivity of the Colored Dansylglycine in Water and Dioxane Studied through Conceptual DFT by Juan Frau, Daniel Glossman-Mitnik

    Published 2018-01-01
    “…The preference of the active sites pertinent to radical, nucleophilic, and electrophilic attacks is made through linking them with the electrophilic and nucleophilic Parr functions, Fukui function indices, and condensed dual descriptor which are chemical reactivity descriptors that arise from conceptual density functional theory. The study confirmed the results from previous works showing that the MN12SX density functional is the most appropriate in predicting the chemical reactivity of this molecule in both solvents.…”
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  5. 125

    On the Adsorption of Chiral Propylene Oxide onto Pd(111): A DFT Study by A. Gil-Rebaza, D. Linares, G. Zgrablich

    Published 2008-07-01
    “…The adsorption of chiral propylene oxide onto a Pd(111) single crystal was studied via ab initio calculations based on plane-wave Density Functional Theory. Different adsorption sites and different molecular configurations, both tilted and flat, have been analyzed. …”
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  6. 126

    QUANTITATIVE STRUCTURE–ACTIVITY RELATIONSHIPS (QSAR) STUDY ON NOVEL 4-AMIDINOQUINOLINE AND 10-AMIDINOBENZONAPHTHYRIDINE DERIVATIVES AS POTENT ANTIMALARIA AGENT by Aliyu Wappah Mahmud, Gideon Adamu Shallangwa, Adamu Uzairu

    Published 2019-06-01
    “…This  study was carried out on 44 compounds of 4-amidinoquinoline and 10-amidinobenzonaphthyridine derivatives to develop a model that relates their structures to their activities against Plasmodium falciparum. Density Functional Theory (DFT) with basis set B3LYP/6-31G? …”
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  7. 127

    On the Investigation of Effective Factors on Electronic Structure Properties of Transition Metal Complexes: Robust Modeling Using GPR Approach by Jianjun Wang, Mohammad Mahdi Molla Jafari

    Published 2022-01-01
    “…The use of costly and complex direct density functional theory (DFT) simulation methods has been commonly used to determine subtle trends in spin-state ordering and inorganic bonding of inorganic materials and, in general, to predict the electronic structure properties of transition metal complexes. …”
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  8. 128

    Molecular Modeling Studies of Some Uracil and New Deoxyuridine Derivatives by Yousra Abdel-Mottaleb, M. S. A. Abdel-Mottaleb

    Published 2016-01-01
    “…Modeling is performed in the ground and the first singlet excited states using density functional theory (DFT) and its time-dependent extension (TD-DFT), respectively.…”
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  9. 129

    Structural and Electronic Properties of GaN (0001)/α-Al2O3 (0001) Interface by M. B. Pereira, E. M. Diniz, S. Guerini

    Published 2015-01-01
    “…Structural and electronic properties of the interface between α-Al2O3 (0001) and GaN (0001) surfaces are investigated through ab initio calculations within the density functional theory. Two different structural models have been investigated interface N(Ga)-terminated. …”
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  10. 130

    Formation, Energetics, and Electronic Properties of Graphene Monolayer and Bilayer Doped with Heteroatoms by Yoshitaka Fujimoto

    Published 2015-01-01
    “…We here review the recent work of boron and nitrogen doping effects into graphene monolayer as well as bilayer on the basis of the first-principles electronic structure calculations in the framework of the density-functional theory. We show the energetics and the electronic properties of boron and nitrogen defects in graphene monolayer and bilayer. …”
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  11. 131

    Experimental and Theoretical Investigations of Terahertz Spectra of the Structural Isomers: Mannose and Galactose by Tongjun Zhang, Shasha Yan, Jianjun Hao, Dehua Li

    Published 2021-01-01
    “…Structural analyses and normal mode calculations of the two systems were performed using solid-state density functional theory (DFT) with the PBE and PW91 density functionals as well as using gas-state DFT with B3LYP hybrid functional. …”
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  12. 132

    Predicting electrocatalytic urea synthesis using a two-dimensional descriptor by Amy Wuttke, Alexander Bagger

    Published 2025-02-01
    “…Furthermore, we identified the most suitable two-dimensional descriptors for selectivity prediction out of various adsorption energies calculated using density functional theory (DFT). We suggest that the adsorption energies of *H and *O on transition metal slabs predict the selectivity towards urea in the co-reduction of CO2 and nitrite ( $${{\rm{NO}}}_{2}^{-}$$ NO 2 − ).…”
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  13. 133

    Adsorption Properties of O2 onCr5 Nanostructures: A DFT Study by Mohammad T. Baei, Ali Kazemi Babaheydari, Parviz Torabi

    Published 2011-01-01
    “…Based on the density functional theory (DFT) adsorption properties of oxygen molecule on Cr5 nanostructures at various positions (top, bridge and central sites) were investigated. …”
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  14. 134

    Prediction of a New Phase of CuxS near Stoichiometric Composition by Prashant Khatri, Muhammad N. Huda

    Published 2015-01-01
    “…In this paper, we have predicted a new crystal phase of copper sulfide (CuxS) around chemical composition of x=1.98 by utilizing crystal database search and density functional theory. We have shown that this new crystal phase of CuxS is more favorable than low chalcocite structure even at stoichiometric composition of x=2. …”
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  15. 135

    Influence of pyridinic nitrogen on tautomeric shifts and charge transport in single molecule keto enol equilibria by G. R. Berdiyorov

    Published 2025-01-01
    “…The reduction of the isomerization barrier and favoring the highly conductive enol form are the main challenges towards practical implementation of this phenomenon. Using density functional theory calculations, we have demonstrated that pyridinic nitrogen in biphenyl molecules with keto-enol tautomerism can successfully make the conductive enol form energetically more favorable. …”
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  16. 136

    First Principle Study of the Mechanical Properties and Phonon Dispersion of the Iron Pnictide Compound EuFe2As2 by N. K. Omboga, C. O. Otieno, P. W. O. Nyawere

    Published 2020-01-01
    “…The ground-state energy calculations were performed within Density Functional Theory (DFT) and the generalized gradient approximation using the pseudopotential method with plane-wave basis sets. …”
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  17. 137

    Calculated characterisation of a sensitive gas sensor based on PEDOT:PSS by Mokhtar Aarabi, Alireza Salehi, Alireza Kashaninia

    Published 2022-09-01
    “…Abstract The interactions between poly (3,4‐ethylene dioxythiophene) poly (styrenesulfonate) (PEDOT:PSS) and small gas molecules are studied using non‐equilibrium Green's function formalism based on the density functional theory. The proposed method is implemented in the Tran SIESTA code to benefit from the potential application of PEDOT:PSS as a gas sensor. …”
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  18. 138

    Exploring the electronic and magnetic properties of half-heusler alloy CoMnSb: implications for spintronics by Binay Limbu, Prem Sagar Dahal

    Published 2025-01-01
    “…In this study, we investigated the electronic and magnetic properties of CoMnSb by employing advanced computational methods rooted in Density functional theory and plane-wave pseudo potential approach. …”
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  19. 139

    Refining potential energy surface through dynamical properties via differentiable molecular simulation by Bin Han, Kuang Yu

    Published 2025-01-01
    “…Consequently, both transport coefficients and spectroscopic data can be used to improve the density functional theory based MLP towards higher accuracy. …”
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  20. 140

    Theoretical Studies of Substitutionally Doped Single-Walled Nanotubes by Charles See Yeung, Ya Kun Chen, Yan Alexander Wang

    Published 2010-01-01
    “…Herein, we present theoretical studies of both main group element and transition metal-doped HSWCNTs. Within density functional theory (DFT), we discuss mechanistic details of their proposed synthesis from vacancy-defected SWCNTs and describe their geometric and electronic properties. …”
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