Optimizing hexafluoro-2,4-pentanedione based Eu(III) complexes: A comprehensive study on the synthesis, spectroscopic characterization with Judd-Ofelt calculation

Optical Materials, Год журнала: 2024, Номер 150, С. 115257 - 115257

Опубликована: Март 30, 2024

Язык: Английский

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Design and Photophysical Characterization of Dinuclear Lanthanide Complexes Incorporating Spacer Ligands along with their Mononuclear Analogues: A Comparative Study

Optical Materials, Год журнала: 2024, Номер 155, С. 115833 - 115833

Опубликована: Июль 20, 2024

Язык: Английский

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Computational and optoelectronic investigations of red-emissive europium (III) β-diketonate with n-donor ligands for display applications

Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, Год журнала: 2024, Номер 315, С. 124307 - 124307

Опубликована: Апрель 17, 2024

Язык: Английский

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Exploring the role of neutral ligands in modulating the photoluminescence of samarium complexes with 1,1,1,5,5,5‐hexafluoro‐2,4‐pentanedione

Luminescence, Год журнала: 2024, Номер 39(7)

Опубликована: Июль 1, 2024

Abstract Four eight‐coordinated luminescent samarium complexes of type [Sm(hfpd) 3 L 2 ] and L′] [where hfpd = 1,1,1,5,5,5‐Hexafluoro‐2,4‐pentanedione tri‐octyl‐phosphine oxide (TOPO) L′ 1,10‐phenanthroline (phen), neocuproine (neoc) bathocuproine (bathoc) were synthesized via a stoichiometrically controlled approach. This allows for precise control over the stoichiometry complexes, leading to reproducible properties. investigation focuses on understanding impact secondary ligands properties these complexes. Infrared (IR) spectra provided information about molecular structures, whereas 1 H 13 C nuclear magnetic resonance (NMR) confirmed structural details along with coordination trivalent Sm ion. The UV–vis revealed molar absorption coefficient bands associated ligand photoluminescence (PL) spectroscopy demonstrated intense orange‐red emission (648 nm relative 4 G 5/2 → 6 9/2 ) from Commission Internationale de l'Éclairage (CIE) triangles indicated that emitted warm orange red light color coordinates ( x , y ranging (0.62, 0.36) (0.40, 0.27). band gap as well parameters confirms utility in displays LEDs.

Язык: Английский

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Optimizing white light emission in Dy(iii) complexes: impact of energy transfer from mono and bidentate ligands on luminescence

RSC Advances, Год журнала: 2024, Номер 14(31), С. 22642 - 22655

Опубликована: Янв. 1, 2024

Complexes of dysprosium(iii) ions with 1,1,1,5,5,5-hexafluoro-2,4-pentanedione featuring various mono and bi-dentate neutral ligands have been prepared thoroughly investigated. The synthesized complexes exhibit an octa-coordinated environment, achieved by stoichiometrically combining organic Dy(iii) ions. This octa-coordination environment ion was confirmed FT-IR spectroscopy, thermogravimetry elemental analysis. Near-white light (NWL) is emitted when were exposed to UV radiation, indicating a significant flow energy from the sensitizing moieties towards ion. NWL emission might resulted due balance between intensities corresponding peaks at 480 nm (blue) 575 (yellow) in Dy1-Dy3. Emission spectra recorded different excitation wavelength utilized study tunability CIE color coordinates. In addition their high thermal stability, display bipolar paramagnetic shifts NMR spectra. 4F9/2 → 6H13/2 transition, contributing ∼62% total emission, stands out as promising candidate for laser amplification its dominance Additionally, observed solid complex opens intriguing possibilities application next-generation white-light emitting devices.

Язык: Английский

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Synthesis and comprehensive analysis of luminescent dysprosium (III) complexes: Photoluminescence, thermal behavior and electrochemical properties

Polyhedron, Год журнала: 2024, Номер 261, С. 117146 - 117146

Опубликована: Июль 22, 2024

Язык: Английский

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Luminescent study of Eu(OOCC6H5)3·3(H2O) complex dispersed on polyvinyl alcohol films: Crystal structure, Interaction and quenching effect

Journal of Molecular Structure, Год журнала: 2024, Номер unknown, С. 140296 - 140296

Опубликована: Окт. 1, 2024

Язык: Английский

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