Luminescence Under Uv(A, B and C) and Sunlight Exposure of Tetrakis Tb3+ Carboxylate Complexes Doped in Different Polymers DOI
Israel P. Assunção,

Flora P. Cauli,

Lucca Blois

et al.

Published: Jan. 1, 2024

Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL DOI

Language: Английский

Luminescent Lanthanide Infinite Coordination Polymers for Ratiometric Sensing Applications DOI Creative Commons
Zefeng Song, Yuanqiang Hao, Yunfei Long

et al.

Molecules, Journal Year: 2025, Volume and Issue: 30(2), P. 396 - 396

Published: Jan. 18, 2025

Ratiometric lanthanide coordination polymers (Ln-CPs) are advanced materials that combine the unique optical properties of ions (e.g., Eu3+, Tb3+, Ce3+) with structural flexibility and tunability polymers. These widely used in biological chemical sensing, environmental monitoring, medical diagnostics due to their narrow-band emission, long fluorescence lifetimes, excellent resistance photobleaching. This review focuses on composition, sensing mechanisms, applications ratiometric Ln-CPs. The mechanism relies two distinct emission bands, which provides a self-calibrating, reliable, precise method for detection. relative intensity ratio between these bands varies concentration target analyte, enabling real-time monitoring minimizing interference. approach is particularly suitable detecting trace analytes use complex environments where factors like background noise, temperature fluctuations, light variations may affect results. Finally, we outline future research directions improving design synthesis Ln-CPs, such as incorporating long-lifetime reference luminescent molecules, exploring near-infrared systems, developing up-conversion or two-photon materials. Progress areas could significantly broaden scope Ln-CP applications, especially biosensing, other fields.

Language: Английский

Citations

3
Chemiluminescent transition metal complexes: Mechanisms and applications DOI
Jinghui Zhu,

Mingrui Gu,

Yahui Chen

et al.

Coordination Chemistry Reviews, Journal Year: 2025, Volume and Issue: 530, P. 216495 - 216495

Published: Feb. 5, 2025

Language: Английский

Citations

1
Luminescent Ln3+-based silsesquioxanes with a β-diketonate antenna ligand: toward the design of efficient temperature sensors DOI Creative Commons
Gautier Félix≠, Alena N. Kulakova, Saad Sene

et al.

Frontiers in Chemistry, Journal Year: 2024, Volume and Issue: 12

Published: April 3, 2024

We report the synthesis and single-crystal X-ray diffraction, magnetic, luminescence measurements of a novel family luminescent cage-like tetranuclear silsesquioxanes (PhSiO 1.5 ) 8 (LnO 4 (O)(C 5 H O 2 6 (EtOH) (CH 3 CN) ⋅2CH CN (where Ln = Tb, 1 ; Tb/Eu, Gd, ), featuring seven-coordinated lanthanide ions arranged in one-capped trigonal prism geometry. Compounds exhibit characteristic Tb 3+ /Eu -related emissions, respectively, sensitized by chelating antenna acetylacetonate (acac) ligands upon excitation UV visible spectral regions. Compound is used to assess energies triplet states acac ligand. For compound , theoretical calculations on intramolecular energy transfer multiphonon rates indicate thermal balance between D Stark components, while mixed analog with Tb:Eu ratio 3:1, showcases intra-cluster -to-Eu transfer, calculated theoretically as function temperature. By utilizing intensity → 7 F (Tb 0 (Eu transitions range 11–373 K, we demonstrate realization ratiometric thermometer operating K maximum relative sensitivity 2.0% −1 at 373 K. These findings highlight potential versatile materials for optical sensing-enabled applications.

Language: Английский

Citations

5
Hourglass-Shaped Homo- and Heteronuclear Nonanuclear Lanthanide Clusters: Structures, Magnetism, Photoluminescence, and Theoretical Analysis DOI

Priya Pandey,

Deepanshu Chauhan, Mrinalini G. Walawalkar

et al.

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(26), P. 11963 - 11976

Published: June 13, 2024

Synthesis of nonameric cationic clusters [Dy

Language: Английский

Citations

4
Unusually Large Ligand Field Splitting in Anionic Europium(III) Complexes Induced by a Small Imidazolic Counterion DOI Creative Commons
Lucca Blois, Israel F. Costa, João Honorato

et al.

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(36), P. 16861 - 16871

Published: Aug. 28, 2024

Luminescent trivalent lanthanide (Ln3+) complexes are compounds of technological interest due to their unique photophysical properties, particularly anionic tetrakis complexes, given higher stability and emission quantum yields. However, structural studies on the cation–anion interaction in these relation such luminescence still lacking. Herein, interactions two luminescent tetrakis(2-thenoyltrifluoroacetonato)europate(III) with alkylimidazolium cations, specifically 1-ethyl-3-methylimidazolium 1-butyl-3-methylimidazolium investigated. The Eu3+ were synthesized characterized by elemental analysis, mass spectrometry, single-crystal X-ray crystallography, spectra recorded at 77 K. Quantum chemical calculations also performed. crystallography revealed hydrogen bonds between enolate ligands imidazolium ring hydrogens. complex had crystallographic sites, confirmed spectroscopy. exhibited an unusual 300 cm–1 splitting 5D0 → 7F1 transition, as reproduced ligand field calculations, suggesting a stronger bonding smaller substituent. We hypothesize that this strong likely causes angular distortions, resulting high splittings.

Language: Английский

Citations

4
High red luminescence intensity under sunlight exposure of a PMMA polymer doped with a tetrakis Eu3+ β-diketonate complex containing a benzimidazolium counterion DOI Creative Commons
Israel P. Assunção, Israel F. Costa, Lucca Blois

et al.

RSC Advances, Journal Year: 2025, Volume and Issue: 15(1), P. 435 - 445

Published: Jan. 1, 2025

New tetrakis Eu 3+ and Gd β-diketonate complexes containing benzimidazolium (Bzim) as the counterion were synthesized by one-pot method successfully doped into a PMMA matrix at different concentrations.

Language: Английский

Citations

0
Assessment of DFT Functionals for Structural Determination of Lanthanide(III) Complexes Using Ligand Field Splitting DOI Open Access
Lucca Blois, Renaldo T. Moura, Ricardo L. Longo

et al.

Journal of Computational Chemistry, Journal Year: 2025, Volume and Issue: 46(2)

Published: Jan. 13, 2025

ABSTRACT Lanthanide (Ln 3+ ) tetrakis complexes, C[Ln(L) 4 ], are important for applications due to their high quantum yields, solubility, and stability. Their luminescent properties depend on the structure, particularly coordination polyhedron, assessment of computational methods calculating structures is paramount. Usually, this uses RMSD distances in [Ln(L) ] − complex or {LnO 8 } polyhedron between crystallographic calculated structures. However, since ligand field (LF) splitting highly geometry‐dependent, experimental LF Stark levels (RMSD‐LF) offers a more accurate measure evaluating methods. energy eigenvalues were using simple overlap model (SOM), with geometries optimized by various density functionals. M06 M06‐L functionals, def2‐SVP/MWB52(Eu)/CPCM, demonstrate best balance accuracy low cost, making them suitable modeling C[Eu(L) complexes.

Language: Английский

Citations

0
Strong Upconverted Circularly Polarized Emission from a Chiral Tetrahedral Yb/Eu Cage DOI
Zhiwei Yao, Ting Gao, Peng‐Fei Yan

et al.

Dalton Transactions, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The heteropolynuclear chiral tetrahedral cages (Yb/Eu) 4 L ( R / S -BINAPO) exhibit upconverted circularly polarized luminescence (UC-CPL) via a novel Yb** → T 1 Eu* upconversion mechanism.

Language: Английский

Citations

0
Near-Infrared Ytterbium Complexes Based on Polycyclic Aromatic Dicarboxylate Ligands and the Solution-Processed NIR OLED with Irradiance up to 110,284 μW/m2 DOI

Guozhu Ren,

Tingyu Pan,

Y. Xu

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 13, 2025

Since the O-H and N-H oscillators of solvent molecules attached to ytterbium ion (Yb3+) C-H existing in inner coordination sphere Yb3+ would quench excited energy Yb(III), which leads low quantum yields (QYs) Yb(III) complexes, we aimed design a ligand that could block out first Yb3+. Herein, series novel polycyclic aromatic dicarboxylate ligands are designed synthesized effectively protect from efficiently sensitize luminescence, while cost sophistication synthesis satisfactory. Therein, [Yb(MO-DPyPDA)2](DIEA) exhibited considerable QY 5.20% long luminescent lifetime 102 μs CD3OD. The single-crystal structure demonstrates there no Yb3+, is conducive alleviating quenching effect. Meanwhile, also carried experiments verify it was thermodynamically feasible for luminescence center through internal redox processes. Moreover, several groups near-infrared organic light-emitting diodes based on [Yb(DTFM-DPyPDA)2](DIEA) were fabricated solution-processing method, highest irradiance 110,284 μW/m2 realized by optimizing device structure.

Language: Английский

Citations

0
Antenna effect-modulated luminescent lanthanide complexes for biological sensing DOI

Lingyan Gui,

Ronghai Huang, Haiying Liang

et al.

Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, Journal Year: 2025, Volume and Issue: unknown, P. 126239 - 126239

Published: April 1, 2025

Language: Английский

Citations

0