Results 11 to 20 of about 827,605 (367)

Substituent Effects on the Solubility and Electronic Properties of the Cyanine Dye Cy5: Density Functional and Time-Dependent Density Functional Theory Calculations [PDF]

open access: yesMolecules, 2021
The aggregation ability and exciton dynamics of dyes are largely affected by properties of the dye monomers. To facilitate aggregation and improve excitonic function, dyes can be engineered with substituents to exhibit optimal key properties, such as ...
Austin Biaggne   +4 more
doaj   +2 more sources

Accurate optical spectra through time-dependent density functional theory based on screening-dependent hybrid functionals [PDF]

open access: yesPhysical Review Research, 2020
We investigate optical absorption spectra obtained through time-dependent density functional theory (TD-DFT) based on nonempirical hybrid functionals that are designed to correctly reproduce the dielectric function.
Alexey Tal   +3 more
doaj   +2 more sources

Demonstration of initial-state dependence in time-dependent density-functional theory [PDF]

open access: green, 2001
Time-dependent density functionals in principle depend on the initial state of the system, but this is ignored in functional approximations presently in use.
Neepa T. Maitra, Kieron Burke
openalex   +3 more sources

Benchmarking the Performance of Time-Dependent Density Functional Theory Methods on Biochromophores. [PDF]

open access: yesJ Chem Theory Comput, 2020
Quantum chemical calculations are important for elucidating light-capturing mechanisms in photobiological systems. The time-dependent density functional theory (TDDFT) has become a popular methodology due to its balance between accuracy and computational
Shao Y, Mei Y, Sundholm D, Kaila VRI.
europepmc   +2 more sources

Time-dependent current density functional theory on a lattice [PDF]

open access: yesPhysical Review B, 2010
A rigorous formulation of time-dependent current density functional theory (TDCDFT) on a lattice is presented. The density-to-potential mapping and the ${\cal V}$-representability problems are reduced to a solution of a certain nonlinear lattice Schr ...
E. A. Coddington, I. V. Tokatly
core   +3 more sources

Time-Dependent Density Functional Theory

open access: yes, 2014
The basic general concepts of time-dependent density functional theory (TDDFT) are briefly outlined before focusing on the linear response formalism in this framework (LR-TDDFT). A number of approximations and connections with other methods are discussed.
N. Doltsinis
semanticscholar   +4 more sources

Conserving Approximations in Time-Dependent Density Functional Theory [PDF]

open access: yesPhysical Review B, 2005
In the present work we propose a theory for obtaining successively better approximations to the linear response functions of time-dependent density or current-density functional theory.
A. L. Fetter   +14 more
core   +6 more sources

Environment Effects on X-Ray Absorption Spectra With Quantum Embedded Real-Time Time-Dependent Density Functional Theory Approaches [PDF]

open access: yesFrontiers in Chemistry, 2022
In this work we implement the real-time time-dependent block-orthogonalized Manby-Miller embedding (rt-BOMME) approach alongside our previously developed real-time frozen density embedding time-dependent density functional theory (rt-TDDFT-in-DFT FDE ...
Matteo De Santis   +2 more
doaj   +2 more sources

Pairing dynamics and time dependent density functional theory [PDF]

open access: yesActa Physica Polonica B, 2018
We discuss issues related to pairing dynamics in nuclear large amplitude collective motion. The examples of effects which are not properly described within BCS theory are presented.
Grineviciute, J.   +2 more
core   +4 more sources

Predicting Phosphorescence Rates of Light Organic Molecules Using Time-Dependent Density Functional Theory and the Path Integral Approach to Dynamics. [PDF]

open access: yesJ Chem Theory Comput, 2019
In this work, we present a general method for predicting phosphorescence rates and spectra for molecules using time-dependent density functional theory (TD-DFT) and a path integral approach for the dynamics that relies on the harmonic oscillator ...
de Souza B, Farias G, Neese F, Izsák R.
europepmc   +2 more sources

Home - About - Disclaimer - Privacy