Synthesis and photosensitization study of red luminescent europium (III) complexes with heterocyclic ligands for application in OLEDs

Ahlawat, Pratibha; Lather, Vaishnavi; Bhayana, Seema; Khatri, Savita; Hooda, Pooja; Kumari, Poonam; Taxak, V.B.; Khatkar, S.P.; Kumar, Rajesh

doi:10.1016/j.inoche.2022.109720

Cited by 12 publications

(2 citation statements)

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“…To overcome this catastrophe, an organic moiety with a significant absorption coefficient such as β-ketoacids, β-hydroxy ketones, and β-diketones was employed to sensitize the lanthanides by the 'Antenna effect' [7,8]. All these chromophores are meritorious light-harvesting which populate the emitting level of metal ions to a large extent and shield the lanthanide emission from the catastrophic effect of non-radiative decay [9]. From the perspective of ligands, the introduction of electron-donating ancillary ligands such as 2,2′-bipyridyl (bipy), 1,10-phenanthroline (phen), bathophenanthroline (batho), 5,6-Dimethyl-1,10-phenanthroline (dmph) and neocuproine (neo) having a synergic effect with prime organic ligand and a significant increase in luminescence was observed [10,11].…”

Section: Introductionmentioning

confidence: 99%

Augmentation of photophysical features and Judd–Ofelt analysis of extensively green glowing terbium (III) complexes with nitrogen donor ancillary ligands

Hooda

Taxak

Malik

et al. 2022

Photochem Photobiol Sci

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Six green glowing terbium (III) complexes were fabricated via grinding method utilizing a prime organic ligand (L) and nitrogen donor ancillary ligands. Characterization of synthesized complexes was accomplished through various spectroscopic techniques. The significant thermal stability was determined by thermogravimetric analysis while the energy bandgap and Urbach energy were investigated through diffused reflectance spectra of these complexes. The peak observed at 548 nm in emission spectra is responsible for the virescent color of these complexes. Color purity, decay time, quantum yield, and emission intensities of ternary complexes were significantly improved as compared to binary ones due to the synergistic effect of ancillary ligands. Judd-Ofelt parameters were determined by the NIR absorption spectrum, which claims the asymmetric environment around the terbium (III) ion. CCT values advocate the applicability of these complexes in green light-emitting materials as a cool light source. The biological assignments reveal the significance of these complexes as potent antioxidants and antimicrobial agents. The energy transfer process highlights the enhancement of luminescence in these complexes via the synergic effect of ligands. Our investigation portrays that these complexes can be employed in laser technology, display devices, semiconductors, biological fields, and optoelectronic devices.

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Section: Introductionmentioning

confidence: 99%

Augmentation of photophysical features and Judd–Ofelt analysis of extensively green glowing terbium (III) complexes with nitrogen donor ancillary ligands

Hooda

Taxak

Malik

et al. 2022

Photochem Photobiol Sci

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“…The compositional analyses claim that the present complexes were synthesized successfully. 51 The SEM image of all complexes ( Fig. 5 ) reveals the crystalline nature of complexes.…”

Section: Resultsmentioning

confidence: 96%

Computational analysis, Urbach energy and Judd–Ofelt parameter of warm Sm³⁺complexes having applications in photovoltaic and display devices

Kumari

Lather²,

Khatri

et al. 2022

RSC Adv.

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Influence of Ancillary Ligand on the Photosensitization and Photophysical Properties of Red Luminescent Tri-fluorinated Β-diketonate Eu(III) Complexes

et al. 2023

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Synthesis and photosensitization study of red luminescent europium (III) complexes with heterocyclic ligands for application in OLEDs

Cited by 12 publications

References 71 publications

Augmentation of photophysical features and Judd–Ofelt analysis of extensively green glowing terbium (III) complexes with nitrogen donor ancillary ligands

Augmentation of photophysical features and Judd–Ofelt analysis of extensively green glowing terbium (III) complexes with nitrogen donor ancillary ligands

Computational analysis, Urbach energy and Judd–Ofelt parameter of warm Sm³⁺complexes having applications in photovoltaic and display devices

Influence of Ancillary Ligand on the Photosensitization and Photophysical Properties of Red Luminescent Tri-fluorinated Β-diketonate Eu(III) Complexes

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Synthesis and photosensitization study of red luminescent europium (III) complexes with heterocyclic ligands for application in OLEDs

Cited by 12 publications

References 71 publications

Augmentation of photophysical features and Judd–Ofelt analysis of extensively green glowing terbium (III) complexes with nitrogen donor ancillary ligands

Augmentation of photophysical features and Judd–Ofelt analysis of extensively green glowing terbium (III) complexes with nitrogen donor ancillary ligands

Computational analysis, Urbach energy and Judd–Ofelt parameter of warm Sm3+complexes having applications in photovoltaic and display devices

Influence of Ancillary Ligand on the Photosensitization and Photophysical Properties of Red Luminescent Tri-fluorinated Β-diketonate Eu(III) Complexes

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Computational analysis, Urbach energy and Judd–Ofelt parameter of warm Sm³⁺complexes having applications in photovoltaic and display devices