Tuning white light emission using single-component tetrachroic Dy<sup>3+</sup> metallacrowns: the role of chromophoric building blocks

Salerno, Elvin V.; Eliseeva, Svetlana V.; Petoud, Stéphane; Pecoraro, Vincent L.

doi:10.1039/d4sc00389f

Chem. Sci.

2024

DOI: 10.1039/d4sc00389f

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Tuning white light emission using single-component tetrachroic Dy³⁺ metallacrowns: the role of chromophoric building blocks

Elvin V. Salerno,

Svetlana V. Eliseeva,

Stéphane Petoud

et al.

Abstract: The fine tuning of CIE coordinates was demonstrated in a series of molecular tetrachroic chromophores, Dy3+/Ga3+ metallacrowns, through modifications of the symmetry around Dy3+ and the nature of the organic ligands.

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Insights into the Structural, Thermal/Dilatometric, and Optical Properties of Dy³⁺-Doped Phosphate Glasses for Lighting Applications

Jiménez,

Hedge,

Viswanath

et al. 2024

ACS Phys. Chem Au

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Dysprosium-doped glasses are of interest for applications in light-emitting devices, yet the full range of effects of Dy 3+ ions on glass properties is not fully understood. In this work, phosphate glasses with 50P 2 O 5 -(50 − x)BaO-xDy 2 O 3 (0 ≤ x ≤ 4.0 mol %) nominal compositions were prepared by melting and the impact of Dy 3+ ions on glass physical, structural, thermo-mechanical, and optical properties was evaluated. Following refractive index, density, and X-ray diffraction characterizations, the glasses were studied comprehensively through Raman spectroscopy, X-ray photoelectron spectroscopy, dilatometry, optical absorption, and photoluminescence (PL) spectroscopy. The thorough investigation and data analyses shed light on the Dy 3+ -driven structural and thermal properties reported here for the first time. The thermal expansion behavior was put in context with the reported data for other lanthanides and analyzed in the framework of the high ionic field strengths, leading to tighter glass networks. Further, a detailed analysis of the absorption, PL, and emission decay curves was carried out, providing insights into the origin of the optical behavior. Supported is the hypothesis that the cross-relaxation channels between Dy 3+ ions taking place at low concentrations are responsible for the decrease in the decay times while the PL attractive for lighting applications still improves. Conversely, high Dy 3+ concentrations facilitate the emission quenching proceeding via an electric dipole−dipole interaction likely incorporating the resonant excitation migration pathway for Dy 3+ −Dy 3+ mean distances shorter than ∼15 Å.

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Insights into the Structural, Thermal/Dilatometric, and Optical Properties of Dy³⁺-Doped Phosphate Glasses for Lighting Applications

Jiménez,

Hedge,

Viswanath

et al. 2024

ACS Phys. Chem Au

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show abstract

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Tuning white light emission using single-component tetrachroic Dy³⁺ metallacrowns: the role of chromophoric building blocks

Abstract: The fine tuning of CIE coordinates was demonstrated in a series of molecular tetrachroic chromophores, Dy3+/Ga3+ metallacrowns, through modifications of the symmetry around Dy3+ and the nature of the organic ligands.

Cited by 1 publication

References 83 publications

Insights into the Structural, Thermal/Dilatometric, and Optical Properties of Dy³⁺-Doped Phosphate Glasses for Lighting Applications

Insights into the Structural, Thermal/Dilatometric, and Optical Properties of Dy³⁺-Doped Phosphate Glasses for Lighting Applications

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Tuning white light emission using single-component tetrachroic Dy3+ metallacrowns: the role of chromophoric building blocks

Abstract: The fine tuning of CIE coordinates was demonstrated in a series of molecular tetrachroic chromophores, Dy3+/Ga3+ metallacrowns, through modifications of the symmetry around Dy3+ and the nature of the organic ligands.

Cited by 1 publication

References 83 publications

Insights into the Structural, Thermal/Dilatometric, and Optical Properties of Dy3+-Doped Phosphate Glasses for Lighting Applications

Insights into the Structural, Thermal/Dilatometric, and Optical Properties of Dy3+-Doped Phosphate Glasses for Lighting Applications

Contact Info

Product

Resources

About

Tuning white light emission using single-component tetrachroic Dy³⁺ metallacrowns: the role of chromophoric building blocks

Insights into the Structural, Thermal/Dilatometric, and Optical Properties of Dy³⁺-Doped Phosphate Glasses for Lighting Applications

Insights into the Structural, Thermal/Dilatometric, and Optical Properties of Dy³⁺-Doped Phosphate Glasses for Lighting Applications