Fluorescent Properties of Rare Earth Chelates in Vinylic Hosts

Filipescu, Nicolae; Kagan, M. R.; Mcavoy, N.; Serafin, F. A.

doi:10.1038/196467a0

Cited by 20 publications

(7 citation statements)

References 3 publications

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“…The authors suggested that laser action should be experimentally verified for these complexes dissolved in both organic solvents or in a polymer matrix. Around the same time, the potential application of rare-earth chelates in lasers has been suggested by other authors as well (Whan and Crosby, 1962;Filipescu et al, 1962). In 1963, Lempicki andSamelson (1963) were the first to obtain stimulated emission at 613.1 nm ( 5 D 0 → 7 F 2 transition) from an alcohol solution (3:1 ethanol:methanol) of europium benzoylacetonate at −150 • C, by pumping with a xenon flash lamp.…”

Section: Chelates For Lasersmentioning

confidence: 88%

Rare-earth beta-diketonates

Binnemans

2005

Handbook on the Physics and Chemistry of Rare Earths

403

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: Chelates For Lasersmentioning

confidence: 88%

Rare-earth beta-diketonates

Binnemans

2005

Handbook on the Physics and Chemistry of Rare Earths

403

303

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“…At the same time Ohlman et ~1 .~~ reported investigations on europium trisdibenzoylmethide for possible laser applications and reported a detailed study of its excitation, absorption, and emission spectra, along with the quantum efficiencies and fluorescent decay times of the principal emission lines as functions of temperature and solvent. The exceptional appeal of plastic hosts for laser compounds, materials which could be easily machined and fabricated to specification was mentioned by Filipescu et al 39 who reported preliminary studies of the fluorescences of rare-earth chelates in vinyl hosts with emphasis upon the samarium ion, an unfortunate choice, as it turned out. The design of lasers based on rare-earth chelates was also considered by Schimitschek and Schwarz40 who presented a numerical evaluation of the problem using europium salicylaldehyde as an example.…”

Section: The Chelate Lasermentioning

confidence: 95%

“…[12][13][14] As recently pointed out, l 5 however, the observation of luminesceiice when the triplet state is above the resonance level is not absolute proof that it is the triplet manifold which contains the donor level for the transfer process. According to Kleinerman, energy could go directly from the singlet of the complex to the rare-earth ion followed by back transfer to the triplet state of the complex which would thus act as a quencher for the ion state.…”

Section: O L E C U L a R C R Y S T A L Smentioning

confidence: 98%

Luminescent Organic Complexes of the Rare Earths

Crosby

1966

Molecular Crystals

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“…The luminescent behaviors of lanthanide complexes have been widely studied due to their sharp line and long life emission, which are caused by an inter-and/or intramolecular energy transfer from the ligands to the metal ions followed by luminescence emission [1,2]. Eu(III) complexes can give strong characteristic lumenescence with long lifetime and excellent monochromacity, so they were regarded as one of the best luminescence materials and were widely used in chemistry, physics, biochemistry and agriculture, optical amplification and waveguide, laser materials [3], OLED [4,5], Luminescent Chemical Sensors [6]. The lumenescent lanthanide complexes can be embedded in sol-gel glasses, LB films, and polymer film with the latter matrix being the preferred one [7].…”

Section: Introductionmentioning

confidence: 99%

Luminescent Properties of Europium Complexes with Different Long Chains in Langmuir-Blodgett (LB) Films

Li¹,

Shang²,

Zhang³

et al. 2011

ENG

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A series of europium(III) complexes with different chain length, tris [2-m-pyridylmethanamido-5-phenyl- (1,3,4)-oxadiazole] mono [2-(4-n-alkylphenyl)-iminazole (4,5-f)-1,10-phenanthroline] Eu(III) [Eu(PMA)3Nn (n = 6, 10, 14,18)] were synthesized. All of these amphiphilic europium(III) complexes could form stable Langmuir film at air/water interface and could be transferred onto hydrophilic quartz and mica substrates by measurement of UV spectra in which the absorbance of the LB films at about 288 nm scales showed the linearity with the number of layers deposited. In order to investigate relation between fluorescence properties and the arrangement of molecular in LB films, surface topography of monolayer films were observed by atomic force microscopy (AFM). Results showed that the emission spectra have Eu(III) characteristic peaks and strong emission strength. It is interesting that the molecular with looser arrangement in LB films has better monochromacity, which illustrated that energy might transferred more easily from ligand to Eu(III) in loosen structure films

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Fluorescent Properties of Rare Earth Chelates in Vinylic Hosts

Cited by 20 publications

References 3 publications

Rare-earth beta-diketonates

Rare-earth beta-diketonates

Luminescent Organic Complexes of the Rare Earths

Luminescent Properties of Europium Complexes with Different Long Chains in Langmuir-Blodgett (LB) Films

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