Studies on composites formed by europium complexes with different ligands and polyvinylpyrrolidone

Liu, Hong-Guo; Lee, Yong‐Ill; Qin, Weiping; Jang, Kiwan; Feng, Xi

doi:10.1016/j.matlet.2003.11.006

Cited by 21 publications

(6 citation statements)

References 15 publications

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“…These results indicate that all Eu 3+ ions experience the same environment in [Eu(dbm) 3 (phen)], but different environments in [Eu(dbm) 3 ]. Liu et al (2004a) doped [Eu(dbm) 3 (H 2 O) 2 ] and [Eu(tta) 3 (H 2 O) 2 ] complexes into a poly(vinylpyrrolidone) (PVP) matrix. It was shown by XRD that the complexes can be dispersed well in the polymer matrix.…”

Section: β-Diketonates In Polymer Matricesmentioning

confidence: 99%

Rare-earth beta-diketonates

Binnemans

2005

Handbook on the Physics and Chemistry of Rare Earths

398

303

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Contents 157 5.6. Solution structure 157 5.7. Electrochemical properties 158 5.8. Thermodynamic properties 159 5.9. Magnetic properties 159 5.10. Crystal-field splittings 160 5.11. Infrared spectra 161 5.12. Chirality sensing 161 5.13. Properties of hemicyanine dyes with βdiketonate counter ions 162 6. Luminescence of β-diketonate complexes 162 6.1. Photoluminescence 162 6.2. Electroluminescence 178 6.3. Triboluminescence 179 6.4. Sensitized chemiluminescence 183 7. From complexes to materials 185 7.1. Sol-gel glasses 185 7.2. Ormosils 186 7.3. β-Diketonates in polymer matrices 190 7.4. β-Diketonates in zeolites 195 7.5. Langmuir-Blodgett films (LB films) 197 7.6. Liquid crystals 200 7.7. Nonlinear optical materials 203 8. From materials to devices 205 8.1. Chelates for lasers 205 8.2. Organic light-emitting diodes (OLEDs) 206 8.3. Liquid crystal displays (LCDs) 216 8.4. Polymeric optical waveguides and amplifiers 217 9. NMR shift reagents 218 9.1. Historical development and general principles 218 9.2. Achiral shift reagents 221 9.3. Chiral shift reagents 226 10. Analytical applications 227 10.1. Trace analysis of lanthanide ions 227 10.2. Trace analysis of organic and biomolecular compounds 229 10.3. Luminescent visualization of latent fingerprints 230 10.4. Chemical sensors 232 10.5. Stationary phases in gas chromatography 232 11. Applications of volatile complexes 233 11.1. Volatile β-diketonate complexes 233 11.2. Gas chromatographic separation of the rare earths 237 11.3. Preparation of thin films by metalorganic chemical vapor deposition (MOCVD) 238 11.4. Preparation of thin films by atomic layer deposition (ALD) 241 11.5. Fuel additives 242 12. Solvent extraction 243 13. Catalytic properties 247

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Section: β-Diketonates In Polymer Matricesmentioning

confidence: 99%

Rare-earth beta-diketonates

Binnemans

2005

Handbook on the Physics and Chemistry of Rare Earths

398

303

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“…Similarly, GO–PVPP and PVPP also had similar X-ray diffraction (XRD) patterns with the diffraction peaks at 11.5 and 22.5° (cf. Figure B) . The GO characteristic peak of 10° was absent for GO–PVPP, indicating the amorphous nature of the GO–PPVP adsorbent.…”

Section: Resultsmentioning

confidence: 95%

“…Figure 2B). 48 The GO characteristic peak of 10°was absent for GO−PVPP, indicating the amorphous nature of the GO−PPVP adsorbent. Based on the Debye Scherer formula, the amorphous crystal grain sizes of PPVP and GO−PPVP are 11 and 17 nm, respectively, suggesting the increased grain size with GO addition.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Graphene Oxide–Crospolyvinylpyrrolidone Hybrid Microspheres for the Efficient Adsorption of 2,4,6-Trichlorophenol

2020

ACS Omega

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Microspheres of the graphene oxide and crospolyvinylpyrrolidone composite (GO–PVPP) were prepared via suspension polymerization and investigated for the adsorption of 2,4,6-trichlorophenol (2,4,6-TCP) from wastewater. The microspheres were thoroughly characterized using scanning electron microscopy, infrared spectroscopy, N 2 physisorption, elemental analysis, X-ray diffraction, and thermogravimetric analysis. The GO–PVPP microspheres comprised GO sheets on the surface and demonstrated good thermal stability, good swelling rate, and excellent adsorption capacity of 2,4,6-TCP (up to 466.77 mg/g). The adsorptions were determined as a function of pH, temperature, adsorbent loading, adsorption time, and initial content of 2,4,6-TCP in the solutions. The sorption kinetics was satisfactorily modeled using the pseudo-second-order rate equation, and the sorption equilibrium can be described using the Freundlich model. The 2,4,6-TCP adsorption by GO–PVPP was shown to be endothermic and spontaneous. The reusability of GO–PVPP was also demonstrated by the adsorption and desorption cycles.

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“…RE ions can transform their absorption energy from the shorter wavelength region into luminescence energy in the longer wavelength region with high luminosity. The europium (Eu) ion is one of the most attractive rare‐earth ions for use because of its excellent luminescence properties that originate from the 4f − 4f transition of Eu 3+ ions . Furthermore, amorphous polymers with active functional groups have been used to prepare many composite functional materials.…”

Section: Introductionmentioning

confidence: 99%

Eu³⁺‐doped polystyrene and polyvinylidene fluoride nanofibers made by electrospinning for photoluminescent fabric designing

et al. 2017

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Eu -doped polystyrene and polyvinylidene fluoride (PVDF/Eu and PS/Eu ) nanofibers were made using electrospinning. These fibers were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), energy dispersive spectroscopy (EDX) and photoluminescence (PL). Spectral analysis of PVDF/Eu and PS/Eu nanofibers was based on their emission spectra. A bright red emission was noticed from Eu that was assigned to the hypersensitive D → F transition. The enhanced intensity ratios of D → F to D → F transitions in the nanofibers indicated a more polarized chemical environment for the Eu ions and greater hypersensitivity for the D → F transition, which showed the potential for application in various polymer optoelectronic devices. The Eu -doped polymer (PVDF/Eu and PS/Eu ) nanofibers are suitable for the photoluminescent white light fabric design of smart textiles. This paper focuses on the potential application of smart fabrics to address challenges in human life.

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Studies on composites formed by europium complexes with different ligands and polyvinylpyrrolidone

Cited by 21 publications

References 15 publications

Rare-earth beta-diketonates

Rare-earth beta-diketonates

Graphene Oxide–Crospolyvinylpyrrolidone Hybrid Microspheres for the Efficient Adsorption of 2,4,6-Trichlorophenol

Eu³⁺‐doped polystyrene and polyvinylidene fluoride nanofibers made by electrospinning for photoluminescent fabric designing

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Studies on composites formed by europium complexes with different ligands and polyvinylpyrrolidone

Cited by 21 publications

References 15 publications

Rare-earth beta-diketonates

Rare-earth beta-diketonates

Graphene Oxide–Crospolyvinylpyrrolidone Hybrid Microspheres for the Efficient Adsorption of 2,4,6-Trichlorophenol

Eu3+‐doped polystyrene and polyvinylidene fluoride nanofibers made by electrospinning for photoluminescent fabric designing

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Eu³⁺‐doped polystyrene and polyvinylidene fluoride nanofibers made by electrospinning for photoluminescent fabric designing