Highly luminescent lanthanide complexes constructed by Bis-tridentate ligand and as sensor for Et2O

Zheng, Kai; Ding, Liwen; Zeng, Chenghui

doi:10.1016/j.inoche.2018.07.016

Cited by 7 publications

(3 citation statements)

References 54 publications

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“…Therefore, it seems that it is impossible to investigate the influence of the length of the bridging bis(terpyridine) ligands on the luminescence properties of the dinuclear Tb(III) complexes. However, it is reported by Zheng et al that the mononuclear Tb(III) complex [Tb(tppz)(acac)(NO 3 ) 2 ]·acac (acac = acetylacetone) has long τ and high QY (τ = 1.35 ms, QY 69%) in solid state . One might draw the same conclusion as for the Eu(III) analogues that the increase of the numbers of the Tb(III) centers might decrease the luminescence performances, such as τ and QY, of the Tb(III) complexes.…”

Section: Resultsmentioning

confidence: 92%

“…However, it is reported by Zheng et al that the mononuclear Tb(III) complex [Tb(tppz)(acac)- (NO 3 ) 2 ]•acac (acac = acetylacetone) has long τ and high QY (τ = 1.35 ms, QY 69%) in solid state. 63 One might draw the same conclusion as for the Eu(III) analogues that the increase of the numbers of the Tb(III) centers might decrease the luminescence performances, such as τ and QY, of the Tb(III) complexes.…”

Section: Ir Spectroscopymentioning

confidence: 88%

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Syntheses, Crystal Structures, and Luminescence of Hexafluoroacetylacetone Dinuclear Lanthanide Complexes Bridged by “Back-to-Back” Bisterpyridine

Li,

Liu,

et al. 2024

Crystal Growth & Design

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Six dinuclear lanthanide complexes [(hfac) 3 Ln(μtppz)Ln(hfac) 3 ] [Ln(III) = 1-Eu, 2-Gd, 3-Tb, hfac = 1,1,1,5,5,5hexafluoroacetylacetone, tppz = 2,3,5,6-tetra(pyridin-2-yl)pyrazine], [(hfac) 3 Ln(μ-tppz)Ln(hfac) 3 ]•CH 2 Cl 2 [Ln(III) = 4-Dy, 5-Yb, 6-Er], and seven dinuclear lanthanide complexes Sm,, were synthesized and characterized by elemental analyses, infrared spectroscopy, thermogravimetric analyses, singlecrystal X-ray diffraction, and powder X-ray diffraction. Solid-state luminescence investigations suggest that an efficient energy transfer process is taking place in 1-Eu and 9-Eu. The dominant intersystem crossing (ISC) and the ligand-to-metal energy transfer (ET) processes in the dinuclear Eu(III) complex bridged by tppz are more efficient, making 1-Eu possess longer τ and higher quantum yield (QY) (0.687 ms and 53.47%) than 9-Eu (0.670 ms and 14.22%). Additionally, the mononuclear complex [Eu(NO 3 ) 3 (ptpy)(H 2 O)] shows longer τ and higher QY (0.545 ms and 16.80%) than the dinuclear complex [Eu(NO 3 ) 3 (H 2 O)] 2 (μ-tppz) (0.035 ms and 1.31%) and [Eu(hfac) 3 (ptpy)] has longer τ and higher QY (0.819 ms and 59.95%) than 9-Eu. The results imply that increasing the length of the "back-to-back" bisterpyridine ligands or the number of the Eu(III) centers could make the luminescence performances such as τ and QY decrease. There is an inefficient energy transfer existing in the Tb(III) and Dy(III) complexes because of the back energy transfer (BET) processes, which leads to an unfavorable condition in observing significantly the characteristic Tb(III)-and Dy(III)-based emissions. However, the synergistic effect of hfac and tppz (or hfac and 1,4-bteb) could sensitize the visible and near-infrared (NIR) luminescence of Sm(III) ion and the NIR luminescence of Nd(III), Er(III), and Yb(III) ions. The τ value and the calculated intrinsic quantum yield (ϕ Ln ) of 7-Nd are 1.13 μs and 0.13%, respectively. This work unveils the synergistic sensitization effect of primary hfac ligands and the ancillary tppz and 1,4bteb ligands and the influences of the length of the bridging bisterpyridine ligands and the numbers of the Ln(III) centers on the luminescence properties. It is anticipated that the synthesized dual-sensitized ternary lanthanide complexes might be excellent candidates for some optoelectronic applications.

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Section: Resultsmentioning

confidence: 92%

Section: Ir Spectroscopymentioning

confidence: 88%

Syntheses, Crystal Structures, and Luminescence of Hexafluoroacetylacetone Dinuclear Lanthanide Complexes Bridged by “Back-to-Back” Bisterpyridine

Li,

Liu,

et al. 2024

Crystal Growth & Design

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“…The three lanthanide complexes 1a–1c were synthesized with similar procedures, the molar ratio of tppz : Ln(NO 3 ) 3 ·6H 2 O ≈ 3 : 2, 0.327 mmol tppz was dissolved in 40 mL CHCl 3 and Ln(NO 3 ) 3 ·6H 2 O (0.214 mmol) dissolved in 20 mL acac, the two solutions were mixed together and let stand for 12 h, the mixture was filtered and the filtrate evaporated in a quiet environment. Four weeks later, crystals suitable for single crystal X-ray test were obtained by filtration [1] .…”

Section: Experimental Design Materials and Methodsmentioning

confidence: 99%

Structural data of highly luminescent lanthanide complexes constructed by bis-tridentate ligand and as sensor for Et2O

et al. 2018

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In this data article, we present the structural and PXRD data of the lanthanide complexes constructed by bis-tridentate ligand tppz (2,3,5,6-tetra-2-pyridinylpyrazine). Detailed structure, luminescence and sensing properties were discussed in “highly luminescent lanthanide complexes constructed by bis-tridentate ligand and as sensor for Et2O” (Zheng et al., 2018). The data includes the structure of Tb-complex, PXRD of Tb-complex, and also detailed structure information listed in Table 1, Table 2, Table 3.

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Lanthanide nitrato complexes bridged by the bis-tridentate ligand 2,3,5,6-tetra(2-pyridyl)pyrazine: Syntheses, crystal structures, Hirshfeld surface analyses, luminescence properties, DFT calculations, and magnetic behavior

Cai

Zhang

et al. 2021

Journal of Luminescence

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Highly luminescent lanthanide complexes constructed by Bis-tridentate ligand and as sensor for Et2O

Cited by 7 publications

References 54 publications

Syntheses, Crystal Structures, and Luminescence of Hexafluoroacetylacetone Dinuclear Lanthanide Complexes Bridged by “Back-to-Back” Bisterpyridine

Syntheses, Crystal Structures, and Luminescence of Hexafluoroacetylacetone Dinuclear Lanthanide Complexes Bridged by “Back-to-Back” Bisterpyridine

Structural data of highly luminescent lanthanide complexes constructed by bis-tridentate ligand and as sensor for Et2O

Lanthanide nitrato complexes bridged by the bis-tridentate ligand 2,3,5,6-tetra(2-pyridyl)pyrazine: Syntheses, crystal structures, Hirshfeld surface analyses, luminescence properties, DFT calculations, and magnetic behavior

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