Real-time time-dependent electronic structure theory

X Li, N Govind, C Isborn, AE DePrince III… - Chemical …, 2020 - ACS Publications
Real-time electronic structure methods provide an unprecedented view of electron dynamics
and ultrafast spectroscopy on the atto-and femtosecond time scale with vast potential to yield …

Spectroscopy in complex environments from QM–MM simulations

UN Morzan, DJ Alonso de Armino, NO Foglia… - Chemical …, 2018 - ACS Publications
The applications of multiscale quantum–classical (QM–MM) approaches have shown an
extraordinary expansion and diversification in the last couple of decades. A great proportion …

Near UV-Visible electronic absorption originating from charged amino acids in a monomeric protein

S Prasad, I Mandal, S Singh, A Paul, B Mandal… - Chemical …, 2017 - pubs.rsc.org
Electronic absorption spectra of proteins are primarily characterized over the ultraviolet
region (185–320 nm) of the electromagnetic spectrum. While recent studies on peptide …

How Large Should the QM Region Be in QM/MM Calculations? The Case of Catechol O-Methyltransferase

HJ Kulik, J Zhang, JP Klinman… - The Journal of Physical …, 2016 - ACS Publications
Hybrid quantum mechanical–molecular mechanical (QM/MM) simulations are widely used in
studies of enzymatic catalysis. Until recently, it has been cost prohibitive to determine the …

Charge transfer in time-dependent density functional theory

NT Maitra - Journal of Physics: Condensed Matter, 2017 - iopscience.iop.org
Charge transfer plays a crucial role in many processes of interest in physics, chemistry, and
bio-chemistry. In many applications the size of the systems involved calls for time-dependent …

State-targeted energy projection: A simple and robust approach to orbital relaxation of non-Aufbau self-consistent field solutions

K Carter-Fenk, JM Herbert - Journal of Chemical Theory and …, 2020 - ACS Publications
Orbital optimization is crucial when using a non-Aufbau Slater determinant that involves
promotion of an electron from a (nominally) occupied molecular orbital to an unoccupied …

Requirements for an accurate dispersion-corrected density functional

AJA Price, KR Bryenton, ER Johnson - The Journal of Chemical …, 2021 - pubs.aip.org
Post-self-consistent dispersion corrections are now the norm when applying density-
functional theory to systems where non-covalent interactions play an important role …

Effect of the QM size, basis set, and polarization on QM/MM interaction energy decomposition analysis

Á Pérez-Barcia, G Cárdenas, JJ Nogueira… - Journal of Chemical …, 2023 - ACS Publications
Herein, an Energy Decomposition Analysis (EDA) scheme extended to the framework of
QM/MM calculations in the context of electrostatic embeddings (QM/MM-EDA) including …

Modeling absorption spectra of molecules in solution

TJ Zuehlsdorff, CM Isborn - International Journal of Quantum …, 2019 - Wiley Online Library
The presence of solvent tunes many properties of a molecule, such as its ground and
excited state geometry, dipole moment, excitation energy, and absorption spectrum …

Systematic quantum mechanical region determination in QM/MM simulation

M Karelina, HJ Kulik - Journal of chemical theory and computation, 2017 - ACS Publications
Hybrid quantum mechanical-molecular mechanical (QM/MM) simulations are widely used in
enzyme simulation. Over ten convergence studies of QM/MM methods have revealed over …