Unveiling the relationship between structural and polarization effects on the first hyperpolarizability of a merocyanine dye

Ysmailyn Siqueira, Marcelo Lyra, Tárcius N. Ramos, Benoît Champagne, Vinícius Manzoni

Research output: Contribution to journalArticlepeer-review

Abstract

The nonlinear optical response, more specifically the Hyper-Rayleigh Scattering (HRS) response of the Brooker’s merocyanine, has been calculated at the time-dependent density functional theory level and rationalized in terms of the structural changes and polarization effects induced by applied external electric fields. The structural change leads to large changes in the HRS response, while only slight variations were observed due to the polarization effects on the fixed quinoid form. Considering both structural and polarization contributions concurrently, the HRS response is dominated by cooperative behavior of those effects for weak and intermediate electric field strengths. At the same time, the competition between both effects was a crucial factor in the region of strong electric fields. The obtained results can lead to an easier understanding for upcoming studies considering more realistic models of solvents where it is not simple to disentangle these contributions.
Original languageEnglish
Article number014305
JournalThe journal of chemical physics
Volume156
Early online date4 Jan 2022
DOIs
Publication statusPublished - 2022

Fingerprint

Dive into the research topics of 'Unveiling the relationship between structural and polarization effects on the first hyperpolarizability of a merocyanine dye'. Together they form a unique fingerprint.

Cite this