Synthesis and luminescence of a novel conjugated europium complex with 6-paramethylaniline carbonyl 2-pyridine carboxylate

An, Bao-Li; Cheah, Kok-Wai; Wong, Wai‐Kwok; Shi, Jianxin; Xu, Ning; Yang, Yue; Gong, Ming

doi:10.1016/s0925-8388(02)01118-0

Cited by 13 publications

(12 citation statements)

References 15 publications

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“…Now days, organic luminescent materials are used commercially for examples in lap-top computers, mobile phones, car dashboards, advertisement panels, decorating lighting, etc. Some organic ligands efficiently sensitize Eu +3 luminescence but not Tb +3 at room temperature [17,23,24]. We proposed the new organic ligand 2 0 -hydroxy-4 0 ,6 0 -dimethoxyacetophenone keeping in view that this is found to sensitize Eu +3 as well as Tb +3 luminescence excellently.…”

Section: Introductionmentioning

confidence: 94%

Luminescent properties of europium and terbium complexes with 2′-hydroxy-4′,6′-dimethoxyacetophenone

et al. 2010

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Section: Introductionmentioning

confidence: 94%

Luminescent properties of europium and terbium complexes with 2′-hydroxy-4′,6′-dimethoxyacetophenone

et al. 2010

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“…These two bonds are obviously weakened in the NPs compared with those in the ligand. This can be attributed to the rigid structure of the coordinated complex, which restricts stretching or bending of the C==O and N-H groups [32]. peak ( Figure 5(b)).…”

Section: 1mentioning

confidence: 99%

Synthesis and characterization of bifunctional terbium complex-based nanoparticles

Lü

Huang

et al. 2012

Chin. Sci. Bull.

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Novel bifunctional terbium complex-based nanoparticles were developed using a modified Stöber method and a layer-by-layer assembly process. A magnetic core of Fe 3 O 4 nanoparticles was coated with a silica shell to form the first layer. Then a ternary Tb 3+ complex (TESPPA-Tb), which acted as a luminescent marker, was covalently bound to the silica surface by stable Si-O-Si bonds. The TESPPA monomer was synthesized by binding pyridine 2,6-dicarboxylic acid to 3-aminopropyltriethoxysilane, which was used as a ligand for coordination with the Tb 3+ ions. An outer shell of silica was applied to the nanoparticles to allow for versatility with surface functionalization. The nanoparticles were characterized by X-ray powder diffraction, transmission electron microscopy, Fourier transform infrared spectroscopy, ultraviolet-visible spectroscopy, vibration sample magnetometer, and photoluminescence spectroscopy. The bifunctional nanoparticles exhibited favorable superparamagnetic behavior and photoluminescence properties of Tb . Superparamagnetic NPs can be attracted by a magnetic field, but retain no residual magnetism after the field is removed, which means they can be easily separated from a matrix without agglomeration after removal of the magnetic field. Microor nanocomposites that combine superparamagnetic and optical properties into a single system have potential applications in the biomedical and biopharmaceutical fields and have attracted much attention [10]. Luminescent NPs such as quantum dots and dye-doped NPs have been used as biolabels in bioassays, and these have advantages over traditional fluorophores [11][12][13]. However, quantum dots have poor water-solubility, difficult surface conjugation chemistry, and possible toxicity in vivo, and are still under investigation [14,15]. Organic dye-doped NPs have broad emission and small Stokes shift, which results in interference between the excitation and emission signals. These limitations hinder the application of quantum dots and dye-doped NPs.Compared with these fluorophores, luminescent lanthanide complexes, especially those of Tb 3+ and Eu 3+ , have large Stokes shifts and strong narrow emission bands in the visible region, which are crucial for low detection limits and high sensitivity in fluorescence detection. They also have long fluorescence lifetimes (micro-to milliseconds range), which allow the removal of background fluorescence and increased assay sensitivity in time-resolved measurements, and can provide accurate and highly sensitive quantification

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“…[22]), at room temperature. Table 2 shows that the luminescence lifetimes of the emitting 5 D 0 level for the complexes obtained are longer than that reported for the Eu(TTA) 3 4 Phen 2 is mainly ascribed to the formation of polynuclear structure of the complex, which results in a rigid polymeric chain structure.…”

Section: Article In Pressmentioning

confidence: 99%

Synthesis and luminescent properties of complexes of Eu(III) with 2-thienyltrifluoroacetonate, terephthalic acid and phenanthroline

Zhao

Huang

Jiao

et al. 2007

Journal of Physics and Chemistry of Solids

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Synthesis and luminescence of a novel conjugated europium complex with 6-paramethylaniline carbonyl 2-pyridine carboxylate

Cited by 13 publications

References 15 publications

Luminescent properties of europium and terbium complexes with 2′-hydroxy-4′,6′-dimethoxyacetophenone

Luminescent properties of europium and terbium complexes with 2′-hydroxy-4′,6′-dimethoxyacetophenone

Synthesis and characterization of bifunctional terbium complex-based nanoparticles

Synthesis and luminescent properties of complexes of Eu(III) with 2-thienyltrifluoroacetonate, terephthalic acid and phenanthroline

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