Photophysical properties of highly green luminescent Tb(III) complexes

Langyan, Ritu; Chauhan, Archana; Dhania, Shammy Laj

doi:10.1016/j.ijleo.2021.168008

Cited by 16 publications

(3 citation statements)

References 31 publications

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“…Figure 5a portrays the excitation spectra of all complexes monitored at 548 nm ( 5 D 4 → 7 F 5 ) emission wavelength in the solid-state. Excitation spectra display a broad excitation band with maxima ranging from 300 to 410 nm, assigned for π → π * transition of organic ligand [38]. The broadening of bands observed in excitation spectra is the result of stark splitting in metals.…”

Section: Photoluminescence Analysismentioning

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: Photoluminescence Analysismentioning

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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show abstract

“…Under excitation at 331 nm, the emission spectrum of 3 shows the characteristic emissions of Eu(III) at 591 ( 5 D 0 → 7 F 1 ), 618 ( 5 D 0 → 7 F 2 ), 650 ( 5 D 0 → 7 F 3 ) and 698 nm ( 5 D 0 → 7 F 4 ) (Figure 3a). [33] The emission spectrum of 5 displays the characteristic emissions of Tb(III) at 488, 544, 584 and 620 nm, corresponding to the 5 D 4 → 7 F J ( J =3–6) transitions (Figure 3b), respectively [34] . The emission spectrum of 6 exhibits both the emission band of the organic ligands in the range of 350–500 nm and the characteristic emissions of Dy(III) at 488, 544, 591 and 618 nm (Figure 3c).…”

Section: Resultsmentioning

confidence: 99%

“…7 F J (J = 3-6) transitions (Figure 3b), respectively. [34] The emission spectrum of 6 exhibits both the emission band of the organic ligands in the range of 350-500 nm and the characteristic emissions of Dy(III) at 488, 544, 591 and 618 nm (Figure 3c). They can be ascribed to the π*-π transitions of the organic ligands and the 4 F 9/2 !…”

Section: Photoluminescent Propertiesmentioning

confidence: 99%

Synthesis, structure, photoluminescence and magnetism of a series of cobalt‐lanthanide heterometallic complexes originated from 2,3‐dichlorobenzoate and 1,10‐phenanthroline

Shen,

Qu,

Chen

et al. 2023

Zeitschrift anorg allge chemie

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A series of 3d–4f heterometallic complexes, namely [Ln2Co2(2,3‐DCB)10(phen)2] [Ln=Nd (1), Sm (2), Eu (3), Gd (4), Tb (5), Dy (6), Er (7)], were obtained through the self‐assembly reactions of Ln(NO3)3 ⋅ nH2O, Co(NO3)2 ⋅ 6H2O, 2,3‐dichlorobenzoic acid (2,3‐HDCB), NaOH and 1,10‐phenanthroline (phen) under solvothermal conditions. Their crystal structures were determined by single‐crystal X‐ray diffraction. They were also characterized by elemental analysis, FT‐IR, powder X‐ray diffraction (PXRD) and thermogravimetric analysis (TGA) and differential thermoanalysis (DTA). These seven complexes have the same molecular formula but different crystal structures. Complexes 1–3, 4 and 5 as well as 6 and 7 are crystallographically isomorphous, respectively. They all exhibit zero‐dimensional (0D) linear tetranuclear cluster structures. These 0D linear tetranuclear clusters can be further connected into a two‐dimensional (2D) supramolecular network via the extensive intermolecular π–π interactions between 2,3‐DCB and phen. The photoluminescent properties of 3, 5 and 6 and the magnetic properties of 1–2 and 4–7 were investigated. Complex 6 shows a slow magnetic relaxation behavior.

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Preparation and optoelectronic enhancement of trivalent terbium complexes with fluorinated β-diketone and bidentate ancillary ligands

Dalal

Nehra

Hooda

et al. 2022

J Mater Sci: Mater Electron

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Photophysical properties of highly green luminescent Tb(III) complexes

Cited by 16 publications

References 31 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

Synthesis, structure, photoluminescence and magnetism of a series of cobalt‐lanthanide heterometallic complexes originated from 2,3‐dichlorobenzoate and 1,10‐phenanthroline

Preparation and optoelectronic enhancement of trivalent terbium complexes with fluorinated β-diketone and bidentate ancillary ligands

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