Syntheses, structures, magnetic, and luminescent properties of five lanthanide-based MOFs with <i>p</i>-phenylenediamine-tetraacetic acid ligand

Yu, Mei‐Hui; Wang, Xiubo; Hu, Ming

doi:10.1080/00958972.2014.989842

Cited by 8 publications

(1 citation statement)

References 38 publications

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“…[27,31] The second ligand, 2,a lso includes the dibenzodiazocinic core as the chromophore, but in this case as two linked substituted p-phenylenediamines.T hese units have also provent o be valuable fort he sensitization of Tb III emission, which is consistent with the energy calculated by Matsui et al for the triplet state of a p-phenylenediamine. [32,33] The coordinating units in 2 are iminodiacetate groups,p resent at both ends of the molecule.…”

Section: Synthesis Of Ligands 1andmentioning

confidence: 99%

Innovative Multipodal Ligands Derived from Tröger's Bases for the Sensitization of Lanthanide(III) Luminescence

Trupp

Bruttomesso

Varde

et al. 2020

Chemistry A European J

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Herein, the synthesis and characterization of the first family of multipodal ligands with a Tröger's base framework designed for the preparation of luminescent lanthanide(III) complexes are reported. Eight ligands were designed and synthesized using different strategies, including alkylation reactions, amide couplings, and Ugi multicomponent reactions. All the ligands bear carboxylate groups for the coordination of the lanthanide(III) ions, with the lanthanide(III)‐sensitizing units consisting of the Tröger's base framework itself or attached benzamides. Upon irradiation of the chromophoric ligands, green terbium(III) emission was efficiently generated, whereas europium(III) emission was negligible. The geometry and substitution pattern of the ligands allow control of the stoichiometry of the species formed and the TbIII luminescence sensitization efficiency, showing that para‐substitution patterns are more efficient than meta substitution for the formation of coordination compounds with lower TbIII/ligand ratio. We propose that the species formed are self‐assembled 2:2 or 2:4 metallosupramolecular structures.

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Section: Synthesis Of Ligands 1andmentioning

confidence: 99%

Innovative Multipodal Ligands Derived from Tröger's Bases for the Sensitization of Lanthanide(III) Luminescence

Trupp

Bruttomesso

Varde

et al. 2020

Chemistry A European J

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A Six‐Armed Phenhomazine Ligand with a Potential “Turn‐Off” Copper(II) Sensing Capability through Terbium(III) Luminescence Quenching

Trupp

Bruttomesso

Eliseeva

et al. 2020

Chemistry A European J

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Herein, the design, synthesis, and characterization of ap henhomazine ligand are described. The ligand has six pendant acetate arms designed for the combined coordination of copper(II) and lanthanide(III) ions, with the perspective of developing a" turn-off"c oppers ensor. The key step for the ligand preparation was the one-step endomethylene bridge fission of ad iamino Trçger's base with ac oncomitant alkylation. Fluorescence anda bsorption spectroscopies as well as nuclearm agnetic resonance (NMR) experiments were performed to analyzea nd understand the coordination properties of the ligand. Transitionm etal coordination was drivenb yt he synergistic effect of the free nitrogen atoms of the diazocinic core and the two central acetate arms attachedt ot hose nitrogen atoms, whereas lanthanide coordinationi sp erformed by the external acetate arms, presumably forming as elf-assembled 2:2m etallosupramolecular structure. The terbiumc omplex shows the typical green emissionw ith narrowb ands andl ong luminescence lifetimes.T he luminescence quenching produced by the presence of copper(II) ions was analyzed.T his work sets, therefore, as tartingp oint fort he development of ap henhomazine-based "turn-off" copper(II) sensor.

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Highly selective and sensitive detection of metal ions and nitroaromatic compounds by an anionic europium(iii) coordination polymer

Bogale

Sun

et al. 2016

Dalton Trans.

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A luminescent Eu(iii)-based coordination polymer, {[Eu(H2O)5(BTEC)][H(C5H6N2)]·3H2O} () has been synthesized under hydrothermal conditions using 1,2,4,5-benzenetetracarboxylic acid (H4BTEC) as a linker. Compound possesses an anionic zig-zag chain constructed from the BTEC ligands and [EuO4(H2O)5] nodes. The protonated 4-aminopyridine groups as guests are located between chains. exhibits the characteristic sharp emission bands of Eu(3+) at 578, 593, 615, 652 and 693 nm upon excitation at 290 nm. The strong emission of could be quenched effectively by trace amounts of Fe(3+) ions even in the presence of other metal ions including Al(3+), Ca(2+), Cd(2+), Co(2+), Cr(3+), Cu(2+), Fe(2+), K(+), Mg(2+), Mn(2+), Pd(2+) and Zn(2+). Similarly, also exhibits superior selectivity and sensitivity towards 4-nitrophenol (4-NP) compared with other competing interfering analytes, such as 2,4,6-trinitrophenol, 2,6-dinitrotolune, 4-nitrotoluene, nitrobenzene, 1,3-dinitrobenzene, o-xylene, nitromethane, nitropropane, phenol, 4-bromophenol and bromobenzene, through a fluorescence quenching mechanism. The possible fluorescence quenching mechanisms are discussed. Moreover, could be used as a visual fluorescent test paper for selectively detecting trace amounts of Fe(3+) and 4-NP.

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Syntheses, structures, magnetic, and luminescent properties of five lanthanide-based MOFs with p-phenylenediamine-tetraacetic acid ligand

Cited by 8 publications

References 38 publications

Innovative Multipodal Ligands Derived from Tröger's Bases for the Sensitization of Lanthanide(III) Luminescence

Innovative Multipodal Ligands Derived from Tröger's Bases for the Sensitization of Lanthanide(III) Luminescence

A Six‐Armed Phenhomazine Ligand with a Potential “Turn‐Off” Copper(II) Sensing Capability through Terbium(III) Luminescence Quenching

Highly selective and sensitive detection of metal ions and nitroaromatic compounds by an anionic europium(iii) coordination polymer

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