Synthesis and Luminescence Properties of Novel Eu-Containing Copolymers Consisting of Eu(III)−Acrylate−β-Diketonate Complex Monomers and Methyl Methacrylate

Wang, Lianhui; Wang, Wen; Wen-gong, Zhang; Kang, En‐Tang; Huang, Wei

doi:10.1021/cm000158i

Cited by 250 publications

(88 citation statements)

References 34 publications

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“…The fluorescence intensity of Eu(TTA) 3 phen was also much stronger than that of Eu(DBM) 3 phen, as shown in Figs 8B and 9B. The emission intensities of the ternary Eu complexes were found to depend strongly on the substituents of the β-diketone ligands, increasing with the β-diketone ligands in the order TTA > DBM (6). Obviously, the closer the triplet-state levels of TTA to the resonance energy level of Eu(III), the more efficient the intramolecular energy transfer.…”

mentioning

confidence: 82%

Cathodic electrochemiluminescence of acetonitrile, acetonitrile–1,10‐phenanthroline and acetonitrile–ternary Eu(III) complexes at a gold electrode

Cui

Guan

2006

Luminescence

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Cathodic electrochemiluminescence (ECL) behaviours of the acetonitrile, acetonitrile-1,10-phenanthroline (phen) and acetonitrile-ternary Eu(III) complex systems at a gold electrode were studied. One very weak cathodic ECL-2 at -3.5 V was observed in 0.1 mol/L tetrabutylammonium tetrafluoroborate (TBABF(4)) acetonitrile solution. When 10 mmol/L tetrabutylammonium peroxydisulphate [(TBA)(2)S(2)O(8)] was added to 0.1 mol/L TBABF(4) acetonitrile solution, another cathodic ECL-1 at -2.7 V appeared and the potential for ECL-2 was shifted from -3.5 to -3.1 V. Furthermore, ECL-2 intensity was enhanced about 20-fold. When 1 x 10(-4) mol/L phen was added to 0.1 mol/L TBABF(4) + 10 mmol/L (TBA)(2)S(2)O(8) acetonitrile solution, the ECL intensities of ECL-1 and ECL-2 were enhanced about 20-fold compared with those of 0.1 mol/L TBABF(4) + 10 mmol/L (TBA)(2)S(2)O(8) acetonitrile solution. The maximum emission peaks of ECL-1 and ECL-2 in the three systems mentioned above appeared at about 530 nm. The products obtained by electrolysing 0.1 mol/L TBABF(4) acetonitrile solution at -3.5 V for 20 min were analysed by Fourier Transform Infrared (FTIR) spectra and gas chromatography-mass spectrometry (GC-MS) and the emitter of ECL-1 and ECL-2 was identified as excited state polyacetonitrile. When ternary Eu(III) complexes were presented in 0.1 mol/L TBABF(4) + 10 mmol/L (TBA)(2)S(2)O(8) acetonitrile solution, another maximum emission peak with a narrow band centred at about 610 nm appeared in ECL-1 in addition to the maximum emission peaks at about 530 nm for ECL-1 and ECL-2. The emitter of ECL emission at 610 nm was identified as the excited states Eu(III)*. The mechanisms for cathodic ECL behaviours of the acetonitrile, acetonitrile-phen and acetonitrile-ternary Eu(III) complex systems at a gold electrode have been proposed. The extremely sharp emission bands for ternary Eu(III) complexes may have analytical potential.

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confidence: 82%

Cathodic electrochemiluminescence of acetonitrile, acetonitrile–1,10‐phenanthroline and acetonitrile–ternary Eu(III) complexes at a gold electrode

Cui

Guan

2006

Luminescence

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“…It was further dried and fractionally distilled from sodium under a nitrogen atmosphere. 6 Ethanol (Synth, 99,5% PA ACS) was distilled over calcium hydride under a nitrogen atmosphere.…”

Section: Reagentsmentioning

confidence: 99%

“…2,3,5 The interaction of Eu 3+ ions with organic molecules and derived complexes have been well studied. The behavior of the ion in relation to polymer chains has been addressed by some authors, [6][7][8][9][10] particularly when solution and solid state properties are involved. Intramolecular energy transfer in lanthanide coordination compounds and their use in electroluminescent devices have been recently explored.…”

Section: Introductionmentioning

confidence: 99%

Photo- and electroluminescent behavior of Eu3+ ions in blends with poly(vinyl-carbazole)

Deichmann

Novo

Çırpan

et al. 2007

J. Braz. Chem. Soc.

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Foi sintetizado o complexo tris(tenoiltrifluoracetonato)(2,2'-bipiridina)európio(III), Eu(tta) 3 bipy, e suas características luminescentes foram avaliadas. A emissão de blendas deste complexo com poli(9-vinil carbazol) (PVK-Eu), variando a composição do Eu(tta) 3 bipy de 1% até 8% em massa (Eu(tta) 3 bipy/PVK, m/m), apresentou picos de fotoluminescência em 425 nm e 613 nm, com intensidades dependentes da composição da blenda. Dispositivos emissores de luz (LED's) de dupla camada, com configuração ITO/PEDOT-PSS/blends/Ca-Al apresentaram emissão de luz vermelha com voltagem mínima de 9 V e pico máximo em 617 nm; eficiência na luminescência foi de 0.04 cd A -1 . Medidas resolvidas no tempo indicaram que a microestrutura da matriz polimérica não afetou as propriedades eletro-ópticas das blendas.The complex tris(thenoyltrifluoracetonate)(2,2'-bipyridine)europium(III), Eu(tta) 3 bipy, was synthesized and assessed for luminescence behavior. The emission of its blends with poly(9-vinyl carbazole) (PVK-Eu), varying in composition from 1 to 8% (Eu(tta) 3 bipy/PVK, m/m) showed PL at 425 nm and at 613 nm, with intensities which depended on the blend composition. Double-layer LED devices with configuration ITO/PEDOT-PSS/Blend/Ca-Al emitted red light with turn-on voltages of 9 V and emission maxima at 617 nm; its luminance efficiency was 0.04 cd A -1 . Time resolved measurements indicated that the microstructure of the matrix had practically no effect on the electro-optical properties of the blends.

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“…Eu(III) complexes have received more attention for the past 50 years [15][16][17][18][19][20] because of their high luminescence efficiency, long fluorescence lifetime, and extremely sharp emission bands due to Eu(III) 4f electrons and the antenna effect of ligands. They have been widely applied in laser materials [21,22], organic electroluminescent devices [23,24] and optical microcavity emitters [25].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of a strong-fluorescent Eu-containing hydrotalcite-like compound

Chen

Wen-gong

2010

Sci. China Chem.

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A novel strong-fluorescent Eu-containing hydrotalcite-like compound (Eu-HTlc) was synthesized using the coprecipitation method, in which aluminum(III) was partially substituted by Europium (III) in the hydrotalcite-like layers, and thenoyltrifluoroacetone, 1,10-phenanthroline were dispersed into the anions in the interlayer region. The sample was characterized by XRD, XPS, FT-IR, ICP, TG-DSC, TEM and fluorescence spectra, and its composition and structure were determined. The results indicated that the sample exhibited a characteristic red light (614 nm). The fluorescent lifetime and fluorescence quantum yield of Eu-HTlc were measured to be respectively 893 s and 66.44%, higher than those of Eu(III)-thenoyltrifluoroacetone-1,10-phenanthroline complex [Eu(TTA) 3 phen]. The result of TG-DSC measurement showed the enhanced thermal stability of Eu-HTlc compared with that of MgAl-LDHs and Eu(TTA) 3 phen. With excellent photoluminescent property and thermal stability, low contents of rare earth ions and ligands, the Eu-HTlc may become one of the novel fluorescent materials with potential applications.hydrotalcite-like compound, Europium, fluorescence, intercalation, supramolecule

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Synthesis and Luminescence Properties of Novel Eu-Containing Copolymers Consisting of Eu(III)−Acrylate−β-Diketonate Complex Monomers and Methyl Methacrylate

Cited by 250 publications

References 34 publications

Cathodic electrochemiluminescence of acetonitrile, acetonitrile–1,10‐phenanthroline and acetonitrile–ternary Eu(III) complexes at a gold electrode

Cathodic electrochemiluminescence of acetonitrile, acetonitrile–1,10‐phenanthroline and acetonitrile–ternary Eu(III) complexes at a gold electrode

Photo- and electroluminescent behavior of Eu3+ ions in blends with poly(vinyl-carbazole)

Synthesis and characterization of a strong-fluorescent Eu-containing hydrotalcite-like compound

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