Toffoli D, Quarin M, Fronzoni G, Stener M. Accurate Vertical Excitation Energies of BODIPY/Aza-BODIPY Derivatives from Excited-State Mean-Field Calculations.
J Phys Chem A 2022;
126:7137-7146. [PMID:
36173265 PMCID:
PMC9574914 DOI:
10.1021/acs.jpca.2c04473]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
We report a benchmark study of vertical excitation energies
and
oscillator strengths for the HOMO → LUMO transitions of 17
boron–dipyrromethene (BODIPY) structures, showing a large variety
of ring sizes and substituents. Results obtained at the time-dependent
density functional theory (TDDFT) and at the delta-self-consistent-field
(ΔSCF) by using 13 different exchange correlation kernels (within
LDA, GGA, hybrid, and range-separated approximations) are benchmarked
against the experimental excitation energies when available. It is
found that the time-independent ΔSCF DFT method, when used in
combination with hybrid PBE0 and B3LYP functionals, largely outperforms
TDDFT and can be quite competitive, in terms of accuracy, with computationally
more costly wave function based methods such as CC2 and CASPT2.
Collapse