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Transition-metal azo Schiff base complexes: nonlinear optics across solutions, thin films and nanocomposites
Citation Link: https://doi.org/10.15480/882.15902
Publikationstyp
Journal Article
Date Issued
2025
Sprache
English
TORE-DOI
Journal
Citation
Advanced optical materials (in Press): (2025)
Publisher DOI
Scopus ID
Publisher
Wiley
This paper investigates the nonlinear optical (NLO) properties of azo-based Schiff base ligand and its corresponding complexes incorporating Cu(II) and Zn(II) metal cations, designed upon the previous synthesis work. Both 2nd and 3rd order NLO properties are examined, with a particular focus on their potential for optoelectronic and photonic applications. The Z-scan technique is employed to analyze NLO refraction and NLO absorption in solution. All samples exhibit positive NLO phenomena, with Zn(L)2 showing the highest values (š
(3) = 27.95 Ć 10ā22 m2 Vā2, šø = 54.44 Ć 10ā47 m5 Vā2), attributed to enhanced ligand-to-metal charge transfer (LMCT). Additionally, thin films deposited via the spin coating method undergo 3rd order NLO analysis through the Maker fringe technique. THG analysis further confirms superior 3rd order NLO performance in Zn(L)2, exceeding several benchmark transition-metal complexes.
2nd order NLO properties are also explored in hybrid nanocomposites designed from Zn(L)2 embedded in nanoporous pSiO2 membrane. This structure exhibits anisotropic SHG behavior, with š
(2) = 0.11 pm Vā1 under s-p polarization, suggesting polarization confinement within nanochannels. The results clearly demonstrate that transition-metal azo Schiff base complexes, particularly
Zn(L)2, exhibit strong NLO responses, positioning them as potential candidates for applications in all-optical switching and frequency conversion.
(3) = 27.95 Ć 10ā22 m2 Vā2, šø = 54.44 Ć 10ā47 m5 Vā2), attributed to enhanced ligand-to-metal charge transfer (LMCT). Additionally, thin films deposited via the spin coating method undergo 3rd order NLO analysis through the Maker fringe technique. THG analysis further confirms superior 3rd order NLO performance in Zn(L)2, exceeding several benchmark transition-metal complexes.
2nd order NLO properties are also explored in hybrid nanocomposites designed from Zn(L)2 embedded in nanoporous pSiO2 membrane. This structure exhibits anisotropic SHG behavior, with š
(2) = 0.11 pm Vā1 under s-p polarization, suggesting polarization confinement within nanochannels. The results clearly demonstrate that transition-metal azo Schiff base complexes, particularly
Zn(L)2, exhibit strong NLO responses, positioning them as potential candidates for applications in all-optical switching and frequency conversion.
Subjects
azo Schiff base
nanoporous membranes
second harmonic generation
third harmonic generation
z-scan
DDC Class
620.11: Engineering Materials
540: Chemistry
Publication version
publishedVersion
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Advanced Optical Materials - 2025 - Waszkowska - TransitionāMetal Azo Schiff Base Complexes Nonlinear Optics Across.pdf
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