Upconverted Photosensitization of Tb Visible Emission by NIR Yb Excitation in Discrete Supramolecular Heteropolynuclear Complexes

Souri, Nabila; Tian, Pingping; Platas‐Iglesias, Carlos; Wong, Ka‐Leung; Nonat, Aline; Charbonnière, Loı̈c J.

doi:10.1021/jacs.6b12940

Cited by 102 publications

(87 citation statements)

References 33 publications

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“…The result of detailed analysis of the Er(III) helical complex with two Cr(III) units has also been reported 127 . Charbonnière and coworkers 128,129 reported the upconversion luminescence of a dinuclear Er(III) complex (Fig 10b) and a polynuclear Tb (III)/Yb(III) complex. Faulkner and co-workers 130 reported the upconversion luminescence of a mononuclear Tm (III) complex in solution.…”

Section: Active Use Of Energy Transfer In Lanthanide Complexesmentioning

confidence: 97%

Effective photosensitized, electrosensitized, and mechanosensitized luminescence of lanthanide complexes

2018

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The 4f-4f emission of Tb(III), Eu(III), and Sm(III) complexes plays an important role in the design of monochromatic green, red, and deep-red luminescent materials for displays, lighting, and sensing devices. The 4f-4f emission of Yb(III), Nd(III), and Er(III) complexes is observed in the near-infrared (IR) region for bioimaging and security applications. However, their absorption coefficients are extremely small (ε < 10 L mol −1 cm −1 ). In this review, photosensitized luminescent lanthanide(III) complexes containing organic chromophores (ligands) with large absorption coefficients (ε > 10,000 L mol −1 cm −1 ) are introduced. Organic molecular design elements, including (1) the control of the excited triplet (T 1 ) state, (2) the effects on the charge-transfer (CT) band, and (3) the energy transfer from metal ions for effective photosensitized luminescence, are explained. The characteristic electrosensitized luminescence (electroluminescence) and mechanoluminescence (triboluminescence) of lanthanide(III) complexes are also explained. Lanthanide(III) complexes with well-designed organic molecules are expected to open avenues of research among the fields of chemistry, physics, electronics, and material science.

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Section: Active Use Of Energy Transfer In Lanthanide Complexesmentioning

confidence: 97%

Effective photosensitized, electrosensitized, and mechanosensitized luminescence of lanthanide complexes

2018

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“…Despite their widespread use as cation sensors,t hrough both luminescence [8,18] and/or magnetic resonance responses, [19] to the best of our knowledge there have been no reports of am olecular lanthanide long-lived emissive complex that is responsive to UO 2 2+ .This example adds to the scope of recent examples of energy transfer in molecular lanthanide(III) complexes, [20] expanding applications into lanthanide-actinide interactions.U pon addition of UO 2 2+ to [EuL],o ur data indicate the formation of heteronuclear adducts in solution, accompanied by an appearance of characteristic UO 2 2+ transitions at 320 and 430 nm in the Eu 3+ excitation spectra. Such transitions can only be due to resonant energy transfer from the UO 2 2+ ion to Eu 3+ ,w ith energy transfer efficiencies up to 97 %.…”

Section: +mentioning

confidence: 97%

Sensing Uranyl(VI) Ions by Coordination and Energy Transfer to a Luminescent Europium(III) Complex

Harvey

Nonat²,

Platas‐Iglesias

et al. 2018

Angew Chem Int Ed

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The release of uranyl(VI) is a hazardous environmental issue, with limited ways to monitor accumulation in situ. Here, we present a method for the detection of uranyl(VI) ions through the utilization of a unique fluorescence energy transfer process to europium(III). Our system displays the first example of a “turn‐on” europium(III) emission process with a small, water‐soluble lanthanide complex triggered by uranyl(VI) ions.

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“…The presence of numerous phosphonate functions resulted in potentially large negative charges on the complexes, which may interact with additional Ln 3+ cations in the solution to form polynuclear species. In view of recent results on polyphosphonated Ln complexes integrating other analyticals tools such as mass spectrometry,, it appears that the composition of such adducts can be even larger with the potential formation of tri‐ to pentanuclear species, the composition of which can be adjusted to obtained pure heteropolynuclear species with exceptional spectroscopic properties such as molecular upconversion in heavy water and more recently in pure water …”

Section: Introductionmentioning

confidence: 99%

Phosphonated Podand Type Ligand for the Complexation of Lanthanide CationsPhosphonated Podand Type Ligand for the Complexation of Lanthanide Cations

et al. 2019

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A new tripodal ligand, based on a central nitrogen atom tris‐functionalized with 6‐methylene‐2‐pyridyl phosphonic acid was synthesized and characterized, in particular by its X‐ray crystal structure. The coordination behaviour of the tripod with lanthanide cations in aqueous solutions was studied by means of UV/Vis electronic absorption spectroscopy and steady‐state and time‐resolved luminescence spectroscopy, revealing the formation of a [LnL] complex followed by polynuclear species with 2:1 and 3:1 metal/ligand stoichiometries. The [LnL] complexes (Ln = Eu, Tb and Yb) were isolated and characterized and the solid‐state structure of the Eu complex was determined by X‐ray diffraction analysis on monocrystals, revealing the observation of dimeric species, in which the Ln3+ cations are firmly held in the cavity formed by the three pyridylphosphonate arms, the coordination of the cations being completed by a water molecule and a phosphonate function of the second complex, allowing for the formation of the dimers, which are further stabilized by π–π stacking interactions between one pyridyl unit of each adjacent monomer. The spectroscopic properties of the complexes in aqueous solutions were studied, showing an impressive 16 µs excited state lifetime for the Yb complex in D2O, despite the presence of a water molecule in the first coordination sphere.

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Upconverted Photosensitization of Tb Visible Emission by NIR Yb Excitation in Discrete Supramolecular Heteropolynuclear Complexes

Cited by 102 publications

References 33 publications

Effective photosensitized, electrosensitized, and mechanosensitized luminescence of lanthanide complexes

Effective photosensitized, electrosensitized, and mechanosensitized luminescence of lanthanide complexes

Sensing Uranyl(VI) Ions by Coordination and Energy Transfer to a Luminescent Europium(III) Complex

Phosphonated Podand Type Ligand for the Complexation of Lanthanide CationsPhosphonated Podand Type Ligand for the Complexation of Lanthanide Cations

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