High lasing oscillation efficiency of Eu(III) complexes having remarkably sharp emission band

Nakamura, Kazuki; Hasegawa, Yasuchika; Kawai, Hideki; Yasuda, Naoki; Wada, Yuji; Yanagida, Shozo

doi:10.1016/j.jallcom.2004.12.144

Cited by 48 publications

(28 citation statements)

References 16 publications

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“…The emission quantum efficiency of a lanthanide(III) complex is also dependent on its coordination geometry and vibrational structure. We reported the importance of the radiative k r constant depending on the lanthanide(III) coordination geometry [176][177][178][179][180][181][182][183][184][185] and the non-radiative k nr constant depending on the vibrational structure of the organic ligands [186][187][188][189][190][191][192][193][194][195][196][197] . Control of the k r and k nr constants in an excited lanthanide (III) complex is also important for the development of a strong luminescent lanthanide(III) complex.…”

Section: Discussionmentioning

confidence: 99%

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: Discussionmentioning

confidence: 99%

Effective photosensitized, electrosensitized, and mechanosensitized luminescence of lanthanide complexes

2018

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“…Stable complexes of luminescent trivalent lanthanide ions are of great interest owing to their broad applications in biochemistry, material chemistry, medicine and so forth [1][2][3][4]. Many rare-earth complexes have been developed as the emitters in organic photoluminescence and electroluminescence devices [5][6][7][8][9]. The most useful lanthanide Eu 3+ ion has unusual spectroscopic characteristics, including millisecond lifetime, very sharp emission bands and large Stokes shifts.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and electroluminescent property of ternary complexes Eu(TTA)3M

Song

Sha

et al. 2010

Journal of Alloys and Compounds

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“…Under forward bias voltage, carriers were injected from electrodes, migrated and recombinated to form excitons in the PVK firstly, since the electron injection and transport property of Tb 0.25 Eu 0.75 (TTA) 2 (N-HPA)Phen is poor. Then the energy of excitons is transferred to the ligand by radiative decay, and finally to the central Eu ion [13][14][15][16][17][18]: (J = 1, 2, 3, 4) of europium ion (Eu 3+ ), respectively. The 5 D 0 -7 F 1 is a magnetic dipole transition; 5 D 0 -7 F J is an electric dipole transition whose intensity is sensitive to chemical environment.…”

Section: Fluorescence Propertiesmentioning

confidence: 99%