Benchmark of Simplified Time‐Dependent Density Functional Theory for UV–Vis Spectral Properties of Porphyrinoids

Abstract: Time‐dependent density functional theory is thoroughly benchmarked for the predictive calculation of UV–vis spectra of porphyrin derivatives. With the aim to provide an approach that is computationally feasible for large‐scale applications such as biological systems or molecular framework materials, albeit performing with high accuracy for the Q‐bands, the results given by various computational protocols, including basis sets, density‐functionals (including gradient corrected local functionals, hybrids, double hybrids and range‐separated functionals), and various variants of time‐dependent density functional theory, including the simplified Tamm–Dancoff approximation, are compared. An excellent choice for these calculations is the range‐separated functional CAM‐B3LYP in combination with the simplified Tamm–Dancoff approximation and a basis set of double‐ζ quality def2‐SVP (mean absolute error [MAE] of ≈0.05 eV). This is not surpassed by more expensive approaches, not even by double hybrid functionals, and solely systematic excitation energy scaling slightly improves the results (MAE ≈0.04 eV).

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch

Erschienen in
Benchmark of Simplified Time‐Dependent Density Functional Theory for UV–Vis Spectral Properties of Porphyrinoids ; volume:3 ; number:1 ; year:2020 ; extent:11
Advanced theory and simulations ; 3, Heft 1 (2020) (gesamt 11)

Urheber
Batra, Kamal
Zahn, Stefan
Heine, Thomas

DOI
10.1002/adts.201900192
URN
urn:nbn:de:101:1-2022070408233526113543
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
15.08.2025, 07:35 MESZ

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