A novel samarium material: Synthesis, structure, photophysical properties and photoluminescence energy transfer mechanism

Luo, Qiu‐Yan; Luo, Hui; Kuang, Han-Mao; Chen, Wen‐Tong; Wen, Yun-Xiang

doi:10.1016/j.jssc.2018.09.040

Cited by 8 publications

(5 citation statements)

References 40 publications

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“…They are a mixture of unintended refinement mistakes or apparent misinterpretations of the structure. The CCDC identifiers for these structures are as follows: WIPFUY , JOGJAT , WERJOS , VOFQEO , XADVOP , FUNNAG , YONZAC , LOFXEL , MUVNEX , FEYDIX , BUWZIE , LATYIP , COVHUT , COVJAB , BUVKIO , BIJFIM , BIJFOS , BIJFUY , FARXUU , ZEVZIM , NODTUY , NOFJIE , TUQTOO , TUQTOO01 , NAKQUN , GELQEU , GELQIY , and GELQOE . The details of XADVOP are given below, with the remaining structures detailed in the Supporting Information (pages 17–35).…”

Section: Resultsmentioning

confidence: 99%

Does H₃O⁺ Really Act as a Ligand in the Solid State?

et al. 2021

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The evidence for the existence of metal complexes containing H 3 O + as a ligand in the solid state is examined. Each of the 68 examples in the Cambridge Structural Database in which H 3 O + is bound to a transition metal, lanthanoid, actinoid, or main group metal ion is detailed and critically appraised. It is concluded that none of the reported examples of complexes containing coordinated H 3 O + have been unequivocally characterized and that they result from either curation errors or misinterpretations of the crystallographic data. These conclusions are supported by computational techniques, which show that three purported H 3 O + complexes based on the 1,4,7,10,13,16,21,24-octaazabicyclo(8.8.8)hexacosane azacryptand skeleton are better described as aqua complexes, with protonation occurring at the amine ligand.

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Section: Resultsmentioning

confidence: 99%

Does H₃O⁺ Really Act as a Ligand in the Solid State?

et al. 2021

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“…Moreover, the energy level difference between the singlet and triplet excited states of L 1 is only 1977 cm –1 , significantly less than 5000 cm –1 , which may in principle lead to the back intersystem crossing from the T 1 to S 1 excited state of L 1 . The intersystem crossing of S 1 → T 1 can be very effective only when the energy gap 1 ππ*– 3 ππ* is greater than 5000 cm –1 according to Reinhoudt’s empirical rule . An energy level diagram and possible energy transfer processes are summarized in Figure .…”

Section: Resultsmentioning

confidence: 99%

“…Otherwise, the emission spectra exhibit mixed ligand-centered emission and Eu 3+ ion emission, leading to spectacular white-light luminescence. For Sm complex 2 , the 4 G 5/2 energy level of Sm 3+ is located at 17900 cm –1 , 400 cm –1 higher than the 5 D 0 state of Eu 3+ , and the energy difference between T 1 of L 1 and 4 G 5/2 of Sm 3+ is only 1862 cm –1 , leading to more efficient backward energy transfer from 4 G 5/2 of Sm 3+ to the T 1 state of L 1 and further intersystem crossing to the S 1 state of L 1 , which results in more S 1 emission from L 1 in some less polar solvents (Figure and Figure S14). Furthermore, according to our DFT calculations, the S 1 and T 1 energies of L 1 are 2.32 eV (18726 cm –1 ) and 2.18 eV (17574 cm –1 ), respectively.…”

Section: Resultsmentioning

confidence: 99%

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Luminescence Tunable Europium and Samarium Complexes: Reversible On/Off Switching and White-Light Emission

et al. 2020

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Single-molecule functional materials with luminescence tunable by external stimuli are of increasing interest due to their application in sensors, display devices, biomarkers, and switches. Herein, new europium and samarium complexes with ligands having triphenylamine (TPA) groups as the redox center and 2,2′-bipyridine (bpy) as the coordinating groups and diketonate (tta) as the second ligand have been constructed. The complexes show white-light emission in selected solvents for proper mixtures of the emission from Ln3+ ions and the ligands. Meanwhile, they exhibit reversible luminescence switching on/off properties by controlling the external potential owing to intramolecular energy transfer from the Ln3+ ions to the electrochemically generated radical cation of TPA •+ . Time-dependent density functional theory (TD-DFT) calculations have been performed to study the electronic spectra. The proposed intramolecular energy transfer processes have been verified by density functional theory (DFT) studies.

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“…Chauhan, Lohra, and Langyan (2020) found that ternary samarium (III) complexes exhibit fascinating optical properties, making them potentially useful in bio-assays, electroluminescent devices, and liquid lasers. Luo et al (2019) synthesized a novel samarium complex that emits red light and has potential as a red light emitting material for LEDs. Meanwhile Hashmi et al (2019) studied the effects of samarium incorporation in ZnO thin films and found that it affected the optical and electrical characteristics of the films, making them suitable for use in optical devices for UV and blue emission.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Magnesium ZRE1 (Mg-Zn-Zr) Alloy with Rare Earth Element (Samarium) Addition

Tukiat,

Yusuf,

Khaireez

et al. 2024

IJTech

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The influences of rare earth (RE) samarium (Sm) added contents to ZRE1 (Mg-Zn-Zr) magnesium (Mg) cast alloy over strength properties to be investigated. Sm at 0.5, 1.0, 1.5, and 2.0 wt.% were added separately as an alloying element to ZRE1 alloy. Optical Microscope (OM), X-ray powder diffraction (XRD), and scanning electron microscope Energy-dispersive X-ray (SEM/EDS) were used to investigate the microstructure of alloy, while mechanical properties investigated include Ultimate Tensile Strength (UTS)and Micro-Hardness (MH) tests. The result revealed that as the Sm level reached 1.5 wt.%, the grain size decreased by 20.9 %. Additionally, UTS and Yield Strength (YS) showed improvements of 8.5 % and 7.9 %, respectively, with the addition of 1.5 wt.% of Sm. In addition, elongation and hardness have been improved by 32.3 % and 10.9 % respectively at 1.5 wt.% Sm addition. Mg-Zn-Ce-Sm was formed as a new phase upon the addition of Sm and was detected via XRD analysis. The addition of Sm to the ZRE1 alloy had significant effects on the refinement of the material's microstructure, leading to an increase in its mechanical and physical properties. Therefore, the new ZRE1-RE magnesium alloy was developed.

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A novel samarium material: Synthesis, structure, photophysical properties and photoluminescence energy transfer mechanism

Cited by 8 publications

References 40 publications

Does H₃O⁺ Really Act as a Ligand in the Solid State?

Does H₃O⁺ Really Act as a Ligand in the Solid State?

Luminescence Tunable Europium and Samarium Complexes: Reversible On/Off Switching and White-Light Emission

Microstructure and Mechanical Properties of Magnesium ZRE1 (Mg-Zn-Zr) Alloy with Rare Earth Element (Samarium) Addition

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A novel samarium material: Synthesis, structure, photophysical properties and photoluminescence energy transfer mechanism

Cited by 8 publications

References 40 publications

Does H3O+ Really Act as a Ligand in the Solid State?

Does H3O+ Really Act as a Ligand in the Solid State?

Luminescence Tunable Europium and Samarium Complexes: Reversible On/Off Switching and White-Light Emission

Microstructure and Mechanical Properties of Magnesium ZRE1 (Mg-Zn-Zr) Alloy with Rare Earth Element (Samarium) Addition

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Does H₃O⁺ Really Act as a Ligand in the Solid State?

Does H₃O⁺ Really Act as a Ligand in the Solid State?