0000000001122992

AUTHOR

Jonas Greiner

0000-0002-5020-9414

showing 3 related works from this author

Calculation of vibrationally resolved absorption and fluorescence spectra of the rylenes

2020

A generating function method was used to simulate the vibrationally resolved absorption and emission spectra of perylene, terrylene and quaterrylene. This method operates on the basis of adiabatic excitation energies and electronic ground and excited state vibrational frequencies. These parameters were calculated using density functional theory with the PBE0 functional for perylene and terrylene and with the BH-LYP functional for quaterrylene. The vertical excitation energies of the lower excited states were calculated using functionals with differing amounts of Hartree-Fock exchange. The optimal functional for each molecule was chosen by comparing these energies to literature excitation en…

Materials scienceAbsorption spectroscopyNE116 Chemical sciencesGeneral Physics and Astronomy010402 general chemistry01 natural sciences7. Clean energyMolecular physicsSpectral linePOLYCYCLIC AROMATIC-HYDROCARBONSMOLECULESchemistry.chemical_compound0103 physical sciencesPhysics::Atomic and Molecular ClustersEmission spectrumPhysical and Theoretical ChemistryEXCHANGEAbsorption (electromagnetic radiation)010303 astronomy & astrophysicsBASIS-SETSDIFFUSE INTERSTELLAR BANDSPERYLENE C20H12SPECTROSCOPY0104 chemical scienceschemistryExcited stateDensity functional theoryPeryleneExcitationAPPROXIMATIONPhysical Chemistry Chemical Physics
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Correction: Calculation of vibrationally resolved absorption and fluorescence spectra of the rylenes

2020

Correction for ‘Calculation of vibrationally resolved absorption and fluorescence spectra of the rylenes’ by Jonas Greiner et al., Phys. Chem. Chem. Phys., 2020, 22, 2379–2385.

Materials scienceAnalytical chemistryGeneral Physics and AstronomyPhysical and Theoretical ChemistryAbsorption (electromagnetic radiation)Fluorescence spectraPhysical Chemistry Chemical Physics
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Photophysical properties of the triangular [Au(HNCOH)]3 complex and its dimer

2020

Rate constants for radiative and non-radiative transitions of the [Au(HNCOH)]3 complex and its dimer were calculated within the Herzberg–Teller approximation based on quantum mechanical principles. A high triplet quantum yield was estimated for the monomer. Internal conversion (IC) was found to be the major competing process to the intersystem crossing (ISC) from the lowest excited singlet state (S1) to the lowest triplet state (T1). ISC and IC from the spin-mixed 1 state also dominate the triplet relaxation process resulting in a negligible phosphorescence quantum yield for the monomer. The IC and ISC rate constants of the dimer are considerably smaller due to much lower Franck–Condon fact…

Materials scienceDimerRelaxation (NMR)General Physics and AstronomyQuantum yield02 engineering and technology010402 general chemistry021001 nanoscience & nanotechnologyInternal conversion (chemistry)01 natural sciences7. Clean energyMolecular physics0104 chemical scienceschemistry.chemical_compoundIntersystem crossingchemistryPhysical and Theoretical ChemistryPerturbation theoryTriplet state0210 nano-technologyPhosphorescencePhysical Chemistry Chemical Physics
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