Results 61 to 70 of about 11,852,044 (174)

Molecular Electronics: Insight from First-Principles Transport Simulations

open access: yesCHIMIA, 2010
Conduction properties of nanoscale contacts can be studied using first-principles simulations. Such calculations give insight into details behind the conductance that is not readily available in experiments.
Magnus Paulsson   +2 more
doaj   +1 more source

Density-Corrected Density Functional Theory for Molecular Properties

open access: yes
Density-corrected (DC) density functional theory (DFT) has been proposed to overcome difficulties related to the self-interaction error. The procedure uses the Hartree–Fock electron density (matrix) non-self-consistently in conjunction with an ...
Jochen Autschbach (407917)   +1 more
core   +1 more source

High quality electron densities as a tool in Kohn-Sham theory [PDF]

open access: yes, 2004
In this thesis high quality electron densities are used to provide insight into density functional theory (DFT) and to improve the quality of DFT calculations.
Allen, Mark J., Allen, Mark J
core  

Molecular properties via a subsystem density functional theory formulation: A common framework for electronic embedding [PDF]

open access: yesThe Journal of Chemical Physics, 2012
In this article, we present a consistent derivation of a density functional theory (DFT) based embedding method which encompasses wave-function theory-in-DFT (WFT-in-DFT) and the DFT-based subsystem formulation of response theory (DFT-in-DFT) by Neugebauer [J. Neugebauer, J. Chem. Phys. 131, 084104 (2009)10.1063/1.3212883] as special cases.
Höfener, Sebastian   +2 more
openaire   +2 more sources

Information-Theoretic Perspectives on Chemical Problems: Recent Developments and Applications

open access: yesEntropy
Information-theoretic approach (ITA) has emerged as a powerful density-based framework for interpreting molecular structure, stability, and reactivity within density functional theory (DFT). By treating the electron density as a probability distribution,
Arpita Poddar, Pratim Kumar Chattaraj
doaj   +1 more source

Utilizing MEDT analysis of [3 + 2] cycloaddition reaction: x-ray crystallography of spirooxindole linked with thiophene/furan heterocycles and triazole framework

open access: yesBMC Chemistry
Hybridization of spirooxindole with different pharmacophores such as triazole and heterocycle such as thiophene and furan moiety was achieved by the [3 + 2] cycloaddition (32CA) reaction approach. Structural investigations of the compounds 4a and 4b were
Abdulmajeed Abdullah Alayyaf   +7 more
doaj   +1 more source

Protein-ligand binding affinities from large-scale quantum mechanical simulations

open access: yes, 2012
The accurate prediction of protein-drug binding affinities is a major aim of computational drug optimisation and development. A quantitative measure of binding affinity is provided by the free energy of binding, and such calculations typically require ...
Fox, Stephen J.
core   +1 more source

BET & ELF Quantum Topological Analysis of Neutral 2-Aza-Cope Rearrangement of γ-Alkenyl Nitrones

open access: yesMolecules, 2017
The 2-Aza-Cope rearrangement of γ-alkenyl nitrones is a rare example of the neutral thermal 2-aza-Cope process that usually takes place with cationic species.
Pedro Merino   +3 more
doaj   +1 more source

Substitution Effects on the Optoelectronic Properties of Coumarin Derivatives

open access: yesApplied Sciences, 2019
Coumarin derivatives have gathered major attention largely due to their versatile utility in a wide range of applications. In this framework, we report a comparative computational investigation on the optoelectronic properties of 3-phenylcoumarin and 3 ...
Amit Kumar   +5 more
doaj   +1 more source

Multi-scale modelling of III-nitrides: from dislocations to the electronic structure [PDF]

open access: yes, 2009
Gallium nitride and its alloys are direct band gap semiconductors with a wide variety of applications. Of particular importance are light emitting diodes and laser diodes. Due to the lack of suitable lattice-matched substrates, epitaxial layers contain a

core   +2 more sources

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