Exploring the two-photon absorption response in short π-chain organic compounds: Hydrazones and pyrazolines derivatives

Página do item simplificado
dc.contributor.authorAraujo R.S.
dc.contributor.authorAbegao L.M.G.
dc.contributor.authorCocca L.H.Z.
dc.contributor.authorda Silva A.A.
dc.contributor.authorValle M.S.
dc.contributor.authorRodrigues J.J.
dc.contributor.authorMendonca C.R.
dc.contributor.authorDe Boni L.
dc.contributor.authorAlencar M.A.R.C.
dc.date.accessioned2024-06-01T06:10:59Z
dc.date.available2024-06-01T06:10:59Z
dc.date.issued2024
dc.description.abstract© 2024 Elsevier B.V.We compared the experimental two-photon absorption spectra of two hydrazone derivatives of chalcone (HDC-1 and HDC-2) and two pyrazoline derivatives of dibenzylideneacetone and chalcone (PD-1 and PD-2). The compounds were synthesized by the Claisen-Schmidt reaction and characterized using NMR, FTIR, and UV–Vis. Using femtosecond pulses, the Z-scan technique recorded two-photon absorption cross-section (σ2PA) spectra of the investigated compounds, which presented values of σ2PA, ranging from ∼12 GM to ∼50 GM. Such σ2PA difference is generally associated with the conjugated chain length and the different functional and peripherical groups used. For example, increasing the π-chain and peripherals donor groups p-OCH3 from HDC-1 to HCD-2 led to a change in the σ2PA magnitude (σHDC−12PA∼35GM, σHDC−22PA∼50GM). The modification on the pyrazoline derivatives, i.e., increasing the conjugated chain and adding p-OCH3 in both phenyls in the PD-2 compared to compound PD-1 doubled the σ2PA magnitude (σPD−12PA∼12GM, σPD−22PA∼22GM). According to the obtained results and considering the investigated compounds' short π-chain, we could claim that these classes of organic molecules promise nonlinear optical materials for optical limiting due to optical transparency ranging from 450 nm for pyrazolines to 550 nm for hydrazone derivatives.
dc.description.volume152
dc.identifier.doi10.1016/j.optmat.2024.115448
dc.identifier.issnNone
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/38724
dc.relation.ispartofOptical Materials
dc.rightsAcesso Restrito
dc.subject.otherlanguageFemtosecond pulses
dc.subject.otherlanguageHydrazones
dc.subject.otherlanguageNonlinear optics
dc.subject.otherlanguagePyrazolines
dc.subject.otherlanguageTwo-photon absorption
dc.titleExploring the two-photon absorption response in short π-chain organic compounds: Hydrazones and pyrazolines derivatives
dc.typeArtigo
local.scopus.citations0
local.scopus.eid2-s2.0-85191662751
local.scopus.subjectChalcones
local.scopus.subjectConjugated chain
local.scopus.subjectDibenzylideneacetone
local.scopus.subjectHydrazone derivative
local.scopus.subjectHydrazones
local.scopus.subjectPyrazoline derivative
local.scopus.subjectPyrazolines
local.scopus.subjectSynthesised
local.scopus.subjectTwo photon absorption
local.scopus.subjectTwo-photon absorption spectrum
local.scopus.updated2025-04-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85191662751&origin=inward
Arquivos
Coleções
Artigos de periódico