Journal ArticleDOI
Structural, Thermal, and Fluorescence Properties of Eu(DBM)3Phenx Complex Doped in PMMA
TLDR
A systematic and significant improvement in the thermal and fluorescence properties of the complex is observed with an increase in the mole concentration of Phen and the maximum fluorescence is observed for Eu(DBM)(3)Phen(1·5), which is a new composition as compared with the usual composition reported.Abstract:
Tris (dibenzoylmethanido) (o-phenanthroline)-europium(III) complexes [Eu(DBM)3(Phen)x] have been synthesized, and their structural, thermal, and fluorescence properties have been investigated both as an independent complex and also after embedding it in poly(methyl methacrylate) (PMMA) polymer matrix. X-ray analysis reveals an unusual crystalline to amorphous transformation in structure of the Eu(DBM)3Phenx complexes when x exceeds 1.0 (mole %). Differential scanning calorimetry (DSC) and Fourier transform infrared spectroscopy (FTIR) analysis depict the interaction between the Eu(DBM)3Phenx complex and the PMMA matrix. The fluorescence intensity of Eu3+ ion in the Eu(DBM)3Phen1·5 complex is an order of magnitude larger compared to the Eu(DBM)3·2H2O complex. In addition to the transition 5D0 → 7F2, which has a rise time of 83 μs, transitions from the 5D1 and 5D2 levels are also observed, along with several ligand field splittings in the Eu(DBM)3Phen1·5 complex. Appearance of a rise time (∼0.76 ns) in the ...read more
Citations
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Journal ArticleDOI
Hybrid materials based on lanthanide organic complexes: a review
Jing Feng,Hongjie Zhang +1 more
TL;DR: This critical review begins with a formulation of the fundamentals of lanthanide organic complex luminescence, and presents various current designed ideas, synthetic routes, luminescent behaviors and potentials of the latest advanced organic-inorganic hybrid materials.
Journal ArticleDOI
Role of Li+ ion in the luminescence enhancement of lanthanide ions: favorable modifications in host matrices
TL;DR: In this paper, the authors highlight various contributing factors that help in the luminescence enhancement of lanthanide ions in the presence of alkali ions and modify host matrices in such a way that it favors radiative transitions.
Journal ArticleDOI
Probing a highly efficient dual mode: down-upconversion luminescence and temperature sensing performance of rare-earth oxide phosphors.
TL;DR: The results suggest that this dual mode phosphor could be an exceptional choice for next generation luminescence-based temperature sensing devices as well as in advanced display devices.
Journal ArticleDOI
Lanthanide complexes based on β-diketonates and a tetradentate chromophore highly luminescent as powders and in polymers.
Eugen S. Andreiadis,Nicolas Gauthier,Daniel Imbert,Renaud Demadrille,Jacques Pécaut,Marinella Mazzanti +5 more
TL;DR: These complexes have been incorporated in polymer matrixes leading to highly luminescent flexible layers and Photophysical and NMR indicate a high stability of these complexes with respect to ligand dissociation in solution.
Journal ArticleDOI
Revelation of the Technological Versatility of the Eu(TTA)3Phen Complex by Demonstrating Energy Harvesting, Ultraviolet Light Detection, Temperature Sensing, and Laser Applications
TL;DR: It is demonstrated that the Eu(TTA)3Phen complex dispersed in poly(vinyl alcohol) could be a very promising material choice for lanthanide-polymer based laser architectures.
References
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Journal ArticleDOI
10th Spiers Memorial Lecture. Transfer mechanisms of electronic excitation
Journal ArticleDOI
Spectroscopic properties and design of highly luminescent lanthanide coordination complexes
G.F. de Sá,Oscar L. Malta,C. de Mello Donegá,Alfredo M. Simas,Ricardo L. Longo,P.A. Santa-Cruz,E. F. da Silva +6 more
TL;DR: In this paper, the development of efficient light conversion molecular devices (LCMDs) based on lanthanide complexes is reviewed, with emphasis on the work of our group, who have adopted a strategy based upon both theoretical and experimental (synthesis and methodological) investigations.
Journal ArticleDOI
Synthesis and Fluorescence of Some Trivalent Lanthanide Complexes
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Phosphorescent materials for application to organic light emitting devices
TL;DR: In this paper, the characteristics necessary for efficient phosphor- escence are considered and conclusions are drawn as to the most promising materials, including metal-organic complexes, organic phosphors, and lanthanide complexes.