Structure, photo- and triboluminescence of the lanthanoid dibenzoylmethanates: HNEt3[Ln(dbm)4]

Akerboom, Sebastiaan; Meijer, Michael S.; Siegler, Maxime A.; Fu, W.T.; Bouwman, Elisabeth

doi:10.1016/j.jlumin.2013.07.065

Cited by 41 publications

(20 citation statements)

References 36 publications

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“…Some triboluminescence phenomena of lanthanide (III) complexes in crystals and polymer matrices have also been reported (Fig. 12b, c) [155][156][157][158][159][160][161][162][163][164][165][166] . Chen et al 167 suggested that strongly luminescent lanthanide coordination polymer crystals with non-centrosymmetric structures are expected to show efficient triboluminescence because of the generation of opposite electric charges on opposing faces of cracks perpendicular to their polar axes.…”

Section: Mechanosensitized Luminescencementioning

confidence: 92%

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: Mechanosensitized Luminescencementioning

confidence: 92%

Effective photosensitized, electrosensitized, and mechanosensitized luminescence of lanthanide complexes

2018

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“…However, the 5 D 0 → 7 F 2 transition at 615 nm is a forced electric dipole (ED) transition and its intensity is sensitive to the Eu III surroundings [52]. The emission spectrum is dominated by the 5 D 0 → 7 F 2 transition at 615 nm and the emission intensity of the 5 D 0 → 7 F 1 transition is rather weak, indicating lack of an inversion center at the Eu III site [53]. Compared to [Eu(dbm) 3 (H 2 O) 2 ], the significant luminescence enhancement of Eu@glass gives a strong indication that the ligand L is coordinated to the Eu III emitting center, having replaced the water molecules.…”

Section: Luminescent Propertiesmentioning

confidence: 99%

Synthesis and photophysical properties of a highly luminescent Eu III -containing hybrid thin film

Bouwman

2016

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A luminescent thin film, Eu@glass, has been prepared on the surface of glass substrates from a silylated diamidopyridyl ligand L and the complex [Eu(dbm) 3 (H 2 O) 2 ] (Hdbm = dibenzoylmethane) via a sol-gel method. The Eu@glass exhibits intense red photoluminescence under the irradiation of near UV light with a quantum yield of 26%. Compared to the compound [Eu(dbm) 3 (H 2 O) 2 ], the photoluminescence intensity of Eu@glass is dramatically enhanced, and the emission lifetime of Eu III (0.517 ms) more than an order of magnitude longer.

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“…Studies on triboluminescence (TL) – light emission emerging upon crystal friction or destruction – are of extreme importance from both fundamental (searching ways to transform mechanical energy into optical energy) and practical considerations – the latter related to the development of highly sensitive optical sensor applications in different fields of science and technology . These sensors are promising tools to monitor the size and location of microcracks in critical objects (such as aircraft, automotive vehicles, bridges, cryogenic fuel or oxidizer tanks for space vehicles, etc.).…”

Section: Introductionmentioning

confidence: 99%

“…In triboluminescent lanthanoid complexes, the resulting emission can be absorbed by the ligands. Indeed, experiments with Gd(III) complexes that showed the TL characteristics for the ligand, suggested that this ligand acts as an energy‐harvesting antenna …”

Section: Introductionmentioning

confidence: 99%

Triboluminescence and crystal structure of the complex [Eu(NО₃)₃(HMPA)₃]: role of cleavage planes

2016

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The atomic structure of crystals of the [Eu(NО ) (HMPA) ] [hexamethylphosphotriamide (HMPA)] complex characterized by an intensive luminescence and triboluminescence was determined using X-ray structural analysis. Noncentrosymmetric crystals have a monoclinic syngony: a = 16.0686 (3), b = 11.0853 (2), c = 20.9655 Å (4), β = 93.232° (1), space group P2 , Z = 4, ρ = 1.560 g/cm The crystal structure is represented by individual С Н EuN O P complexes linked through van der Waals interactions with clearly expressed cleavage planes. The Eu(III) atom coordination polyhedron reflected the state of a distorted square antiprism. Structural aspects of the suggested model, including formation of triboluminescence properties, were considered and the role of the cleavage planes was discussed.

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Structure, photo- and triboluminescence of the lanthanoid dibenzoylmethanates: HNEt3[Ln(dbm)4]

Cited by 41 publications

References 36 publications

Effective photosensitized, electrosensitized, and mechanosensitized luminescence of lanthanide complexes

Effective photosensitized, electrosensitized, and mechanosensitized luminescence of lanthanide complexes

Synthesis and photophysical properties of a highly luminescent Eu III -containing hybrid thin film

Triboluminescence and crystal structure of the complex [Eu(NО₃)₃(HMPA)₃]: role of cleavage planes

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Structure, photo- and triboluminescence of the lanthanoid dibenzoylmethanates: HNEt3[Ln(dbm)4]

Cited by 41 publications

References 36 publications

Effective photosensitized, electrosensitized, and mechanosensitized luminescence of lanthanide complexes

Effective photosensitized, electrosensitized, and mechanosensitized luminescence of lanthanide complexes

Synthesis and photophysical properties of a highly luminescent Eu III -containing hybrid thin film

Triboluminescence and crystal structure of the complex [Eu(NО3)3(HMPA)3]: role of cleavage planes

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Triboluminescence and crystal structure of the complex [Eu(NО₃)₃(HMPA)₃]: role of cleavage planes