Excitation Energies from Time-Dependent Density Functional Theory for Linear Polyene Oligomers: Butadiene to Decapentaene
Citations Over TimeTop 10% of 2000 papers
Abstract
Time-dependent density functional theory (TDDFT) is applied to calculate vertical excitation energies of trans-1,3-butadiene, trans−trans-1,3,5-hexatriene, all-trans-1,3,5,7-octatetraene, and all-trans-1,3,5,7,9-decapentaene. Attachment and detachment densities for transitions in butadiene and decapentaene from the ground state to the 2 1Ag and 1 1Bu excited states are also calculated and analyzed. Based on comparisons with experimental results and high level ab initio calculations in the literature, significant improvement over configuration−interaction singles is observed for the 2 1Ag state of the polyenes, which has been known to have significant double excitation character. For the 1 1Bu state, TDDFT underestimates the excitation energy by 0.4−0.7 eV. In this case we have observed a significant difference between the results for TDDFT and TDDFT within the Tamm−Dancoff approximation, both in excitation energies and, at least for butadiene, in the character of the excited state.
Related Papers
- → The Longest Polyene(2012)19 cited
- → π‐Conjugated α,ω‐Diphenylpolyene Complexes of RuClCp* Fragment(s) inη4‐s‐cis Conformation(2006)11 cited
- → Characterization of Polyene Sequences in Poly(vinyl Chloride)(1978)23 cited
- → Polyene antibiotics. IX. An improved method for the preparation of methyl esters of polyene antibiotics.(1977)20 cited
- → 49. Studies in the polyene series. Part XIII. Acetylenyl glycols from polyene aldehydes and their rearrangement with acids(1944)2 cited