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The optical properties of mols. in complex environments were studied within hybrid time-dependent d. functional theory / mol. mechanics (TDDFT/MM) simulation studies. The potential energy surface in the excited state is described within time-dependent d. f ...

The combination of time-dependent d. functional theory (TDDFT) for the description of excited states with a hybrid quantum mechanics/mol. mechanics (QM/MM) approach enables the study of photochem. processes in complex environments. Here, we present a short ...

Very large mol. systems can be calcd. with the so called CNDOL approx. Hamiltonians that have been developed by avoiding oversimplifications and only using a priori parameters and formulas from the simpler NDO methods. A new diagonal monoelectronic term na ...

Indoleamine 2,3-dioxygenase 1 (IDO1) catalyzes the rate-limiting step in the kynurenine pathway of tryptophan metabolism, which is involved in immunity, neuronal function, and aging. Its implication in pathologies such as cancer and neurodegenerative disea ...

A combined strategy based on the computation of absorption energies, using the ZINDO/S semiempirical method, for a statistically relevant number of thermally sampled configurations extracted from QM/MM trajectories is used to establish a one-to-one corresp ...

The authors describe two different implementations of time-dependent d. functional theory (TDDFT) for use in excited state mol. dynamics simulations. One is based on the linear response formulation (LR-TDDFT), whereas the other uses a time propagation sche ...

The structure and dynamics of the retinal chromophore of rhodopsin are investigated systematically in different environments (vacuum, methanol soln., and protein binding pocket) and with different computational approaches (classical, quantum, and hybrid qu ...

Ute Röhrig

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Optical properties of molecules in solution via hybrid TDDFT/MM simulations

Quantum mechanical/molecular mechanical (QM/MM) Car-Parrinello simulations in excited states

CNDOL: A fast and reliable method for the calculation of electronic properties of very large systems. Applications to retinal binding pocket in rhodopsin and gas phase porphine

Inhibition Mechanisms of Indoleamine 2,3-Dioxygenase 1 (IDO1)

Origin of the Spectral Shifts among the Early Intermediates of the Rhodopsin Photocycle

Molecular dynamics in electronically excited states using time-dependent density functional theory

Solvent and protein effects on the structure and dynamics of the rhodopsin chromophore