Phosphonium-based tetrakis dibenzoylmethane Eu(<scp>iii</scp>) and Sm(<scp>iii</scp>) complexes: synthesis, crystal structure and photoluminescence properties in a weakly coordinating phosphonium ionic liquid

Malba, Chandrashekhar; Enrichi, Francesco; Facchin, Manuela; Demitri, Nicola; Plaisier, Jasper R.; Natile, Marta Maria; Selva, Maurizio; Riello, Pietro; Perosa, Alvise; Benedetti, Alvise

doi:10.1039/c5ra03947a

Cited by 18 publications

(7 citation statements)

References 39 publications

(103 reference statements)

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“…The visible emission lifetimes (τ) of 3 and 6 are 25.37 and 31.12 μs in CH 3 CN, respectively (Figure 10 , Figure S6 ), which are a little shorter than the value of [ZnSmL b (NO 3 ) 3 (H 2 O)] complex reported by Andruh et al (Pasatoiu et al, 2011 ), but longer than those reported for some other Sm(III)-based complexes (Chen et al, 2005 ; Fomina et al, 2014 ; Foucault-Collet et al, 2014 ). The intrinsic quantum yields (Φ Ln ) of Sm 3+ emissions in 3 and 6 are calculated as 0.85 and 1.04%, respectively (the natural lifetime of Sm 3+ is 3.0 ms; Malba et al, 2015 ). The visible emission quantum yields (Φ em ) of 3 and 6 are found to be 0.51 and 0.41%, respectively.…”

Section: Resultsmentioning

confidence: 99%

Luminescent Polynuclear Zn- and Cd-Ln Square-Like Nanoclusters With a Flexible Long-Chain Schiff Base Ligand

et al. 2018

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Two series of Zn-Ln and Cd-Ln nanoclusters [Ln4Zn8L2(OAc)20(OH)4] [Ln = Nd (1), Yb (2), and Sm (3)] and [Ln2Cd2L2(OAc)2(OH)2(OCH3)2] [Ln = Nd (4), Yb (5), and Sm (6)] were prepared using a long-chain Schiff base ligand with a flexible (CH2)2O(CH2)2O(CH2)2 chain. All these clusters show square-like structures. The Schiff base ligands show “linear” configurations in the structures of 1-6, and the metric dimensions of Zn-Ln and Cd-Ln clusters measure ~8 × 14 × 21 and 8 × 12 × 12 Å, respectively. The study of luminescence properties shows that the Zn/L and Cd/L chromophores can effectively transfer energy to the lanthanide ions, and 1-6 show visible and NIR emissions.

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Section: Resultsmentioning

confidence: 99%

Luminescent Polynuclear Zn- and Cd-Ln Square-Like Nanoclusters With a Flexible Long-Chain Schiff Base Ligand

et al. 2018

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“…Malba et al used the DMC route to synthesize phosphonium-based tetrakis dibenzoylmethane Eu( iii ) and Sm( iii ) complexes. 92 Starting from [P 8881 ][MeOCO 2 ], they obtained methyltrioctylphosphonium dibenzoylmethanate [P 8881 ][dbm] by acid/base neutralisation with dibenzoylmethane. The ionic liquid-lanthanide complexes were directly generated from [P 8881 ][dbm] by the addition of the corresponding lanthanide salt.…”

Section: Potential Uses Of the Dialkyl Carbonate Routementioning

confidence: 99%

The dialkylcarbonate route to ionic liquids: purer, safer, greener?

et al. 2023

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“…Highly luminescent tetrakis Sm 3+ complexes with the dbm ligand and the phosphonium [P 8,8,8,1 ] + counterion were synthesized by Malba et al [ 53 ]. Crystal data from [Sm(dbm) 4 ][P 8,8,8,1 ] show that the Sm 3+ ions are surrounded by four dbm ligands coordinating, as expected, in a bidentate fashion, efficiently shielding the metal center from solvent molecules.…”

Section: Luminescent Ln Dissolved In Ionic Liquids (Ln@ils)mentioning

confidence: 99%

Luminescent Ln-Ionic Liquids beyond Europium

et al. 2021

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Searching in the Web of Knowledge for “ionic liquids” AND “luminescence” AND “lanthanide”, around 260 entries can be found, of which a considerable number refer solely or primarily to europium (90%, ~234). Europium has been deemed the best lanthanide for luminescent applications, mainly due to its efficiency in sensitization, longest decay times, and the ability to use its luminescence spectra to probe the coordination geometry around the metal. The remaining lanthanides can also be of crucial importance due to their different colors, sensitivity, and capability as probes. In this manuscript, we intend to shed some light on the existing published work on the remaining lanthanides. In some cases, they appear in papers with europium, but frequently in a subordinate position, and in fewer cases then the main protagonist of the study. All of them will be assessed and presented in a concise manner; they will be divided into two main categories: lanthanide compounds dissolved in ionic liquids, and lanthanide-based ionic liquids. Finally, some analysis of future trends is carried out highlighting some future promising fields, such as ionogels.

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Phosphonium-based tetrakis dibenzoylmethane Eu(iii) and Sm(iii) complexes: synthesis, crystal structure and photoluminescence properties in a weakly coordinating phosphonium ionic liquid

Abstract: Highly luminescent anionic Ln(III) β-diketonate complexes of formula [P 8,8,8,1 ][Ln(dbm) 4 ], with Ln = Eu 3+ and Sm 3+ , [P 8,8,8,1 ] = trioctylmethylphosphionium and dbm = 1,3-65 RSC Advances Accepted Manuscript

Cited by 18 publications

References 39 publications

Luminescent Polynuclear Zn- and Cd-Ln Square-Like Nanoclusters With a Flexible Long-Chain Schiff Base Ligand

Luminescent Polynuclear Zn- and Cd-Ln Square-Like Nanoclusters With a Flexible Long-Chain Schiff Base Ligand

The dialkylcarbonate route to ionic liquids: purer, safer, greener?

Luminescent Ln-Ionic Liquids beyond Europium

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