Strongly luminescent, highly ionic europium in a lanthanum diphenylphosphinate matrix

Abreu, Edson M. de; Francisco, Cristina S.; Klein, Stanlei Ivair; Stucchi, Elizabeth Berwerth

doi:10.1016/j.optmat.2012.08.003

Cited by 5 publications

(3 citation statements)

References 22 publications

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“…The presence of an intense low-angle diffraction, close to seven 2θ/degrees (interplanar spacing d ∼ 12 Å), is also repeated in all the synthesized coordination compounds. These results are similar to the behavior shown by MOFs [38] and corroborate those described in the literature [26,28,29,32].…”

Section: Resultssupporting

confidence: 92%

“…It is known that previous studies [28,29,32] have already pointed to the possibility of Eu 3+ occupying more than one symmetry site in yttrium, lanthanum and gadolinium diphenylphosphinates matrices doped with trivalent europium. However, it is the first time that the existence of at least two symmetry sites is verified in a pure europium diphenylphosphinate matrix -[Eu(dpp) 3 ] n synthesized by different methodologies.…”

Section: Resultsmentioning

confidence: 99%

“…According to Abreu et al [31,32], [RE(dpp) 3 ] are polycrystalline materials in a polymeric arrangement, resulting in coordination sites of different symmetries, and can be represented by [RE(dpp) 3 ] n .…”

Section: Introductionmentioning

confidence: 99%

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A new overview on rare earth diphenylphosphinates: Europium characteristic luminescence of low dimensional nanostructured materials

Bim

Stucchi

Cebim

2018

Journal of Luminescence

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Porous crystalline luminescent polymer compounds have attracted huge interest due to their supramolecular structures, aesthetically attractive structural topologies and potentialities for innovative technological applications. However, wet route precipitation or hydro/solvothermal methods may lead to the formation of highly insoluble porous coordination networks, as is true of europium diphenylphosphinates -[Eu(dpp) 3 ] n . The aim of this work was to study the optical behavior and its relation to the structure of [Eu(dpp) 3 ] n complexes obtained through different synthetic approaches by precipitation: wet route (WRS), ultrasound-assisted wet route (U-WRS), modulator-assisted wet route (M-WRS) and wet route synthesis with solvothermal treatment (S-WRS). These methodologies allowed to synthetize crystalline materials in which both chelate and bridged coordination modes coexist, and they were efficient for obtaining stick-shaped 1D1 nanostructured materials with well-defined optical properties. Changes in precipitation kinetics and crystalline phases formation rate led to a distribution of Eu 3+ ions in higher symmetry sites (HSS). S-WRS, transforming part of the less symmetrical sites into HSS, provided a better ordering of [Eu(dpp) 3 ] n . Furthermore, this is the first report of two or more symmetry sites for Eu 3+ in a pure [Eu(dpp) 3 ] n matrix.

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Section: Resultssupporting

confidence: 92%

Section: Resultsmentioning

confidence: 99%

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A new overview on rare earth diphenylphosphinates: Europium characteristic luminescence of low dimensional nanostructured materials

Bim

Stucchi

Cebim

2018

Journal of Luminescence

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Eu3+, Yb3+ and Eu3+-Yb3+ Complexes with Salicylic Acid and 1,10-Phenanthroline: Synthesis, Photoluminescent Properties and Energy Transfer

Sharma

Narula

2015

J Fluoresc

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This paper reports the synthesis of mononuclear Eu(3+), Yb(3+) and binuclear Eu(3+)-Yb(3+) complexes by solution technique, maintaining the stoichiometric ratios of salicylic acid (sal) and 1,10-phenanthroline (phen) as ligands and their structural, optical and morphological properties were demonstrated. The FTIR absorption spectra indicates that sal and phen are coordinated to the rare earth ion through the chemical bonds formed between oxygen and nitrogen atoms of the ligands and rare earth ion. The UV-vis absorption spectra of the complexes reflect the absorption spectra of the ligands and there is no significant change in the wavelength and band profiles between the spectra of the ligands and that of complexes except a slight red shift. The photoluminescent emission spectra of the complexes in visible and near-infrared (NIR) region was recorded and indicated the emission quenching in complex (2) due to the energy transfer from Eu(3+) ion to Yb(3+) ion. The morphological properties of the complexes as characterized by SEM revealed different morphologies of mononuclear and binuclear complexes.

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Luminescence of rare earth 3D hydroxide framework Eu3+-doped and its application in dye adsorption tests

Barreto,

Moura,

da Conceição Silva Barreto

et al. 2023

Applied Clay Science

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Strongly luminescent, highly ionic europium in a lanthanum diphenylphosphinate matrix

Cited by 5 publications

References 22 publications

A new overview on rare earth diphenylphosphinates: Europium characteristic luminescence of low dimensional nanostructured materials

A new overview on rare earth diphenylphosphinates: Europium characteristic luminescence of low dimensional nanostructured materials

Eu3+, Yb3+ and Eu3+-Yb3+ Complexes with Salicylic Acid and 1,10-Phenanthroline: Synthesis, Photoluminescent Properties and Energy Transfer

Luminescence of rare earth 3D hydroxide framework Eu3+-doped and its application in dye adsorption tests

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