Matches in SemOpenAlex for { <https://semopenalex.org/work/W3080776782> ?p ?o ?g. }
- W3080776782 abstract "Theoretical molecular design of efficient nonlinear optical (NLO) systems using singlet fission (SF) is performed for butterfly-shaped acenes with/without nitrogen and sulfur substitutions using quantum chemical calculations, exciton dynamics simulations, and Marcus theory. It is found that these large systems meet the energy level matching conditions of efficient SF and exhibit superior third-order NLO properties (second hyperpolarizability γ at the molecular scale) to a typical SF molecule, pentacene. In addition, we investigate SF rates and γ in the correlated triplet pair [1(TT)] state generated by SF for various slip-stacked dimer models of these systems. For molecular packing with relatively large 1(TT) yields, a significant increase in γ/monomer in the 1(TT) state is observed, which is in good agreement with the electronic-coupling-based design guidelines obtained from our previous study. In particular, the butterfly-shaped acenes involving heteroatoms are found to exhibit a significant increase in γ/monomer as compared to the other systems. By analyzing the excitation properties in the 1(TT) state and intermolecular orbital interactions, we clarify the origin of such γ enhancement. The obtained results contribute to the construction of design guidelines for efficient SF-induced-NLO materials and demonstrate that butterfly-shaped acenes have the potential to surpass conventional NLO systems." @default.
- W3080776782 created "2020-09-01" @default.
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- W3080776782 date "2020-08-24" @default.
- W3080776782 modified "2023-10-17" @default.
- W3080776782 title "Quantum design for singlet-fission-induced nonlinear optical systems: Effects of <b>π</b>-conjugation length and molecular packing of butterfly-shaped acenes" @default.
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- W3080776782 doi "https://doi.org/10.1063/5.0013985" @default.
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