New photoluminophore nanocomposite based on organic compound with Eu3+ ions and copolymer styrene-butylmethacrilate

Iovu, M. S.; Andriesh, A. M.; Buzurniuc, S. A.; Verlan, V. I.; Turta, Constantin; Zubareva, V. E.; Caraman, Mihail

doi:10.1016/j.jnoncrysol.2009.04.047

Cited by 6 publications

(5 citation statements)

References 9 publications

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“…The emission spectra of NC were similar to that of corresponding Eu(TTA) 3 Phen complex [2], and the halfwidths of the strongest bands of PL were found to be less than 10 nm, but in this case the PVP/Eu(TTA) 2 (Phen 3 PO) 2 NO 3 have most high fluorescence intensity and color purity. Nanocomposites display a bright and narrow Eu 3+ ion emission, which is due to the so-called "antenna" effect, defined as a light conversion process via an absorption energy transfer-emission sequence involving distinct absorption by a polymer and ligand and their energy transfer to Eu 3+ ions and later their emission.…”

Section: Discussionmentioning

confidence: 71%

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Photoluminescence properties of PVP/Eu(TTA)2(Phen3PO)2NO3 nanocomposites

Verlan¹,

Iovu²,

Culeac³

et al. 2011

Journal of Non-Crystalline Solids

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Section: Discussionmentioning

confidence: 71%

“…In a previous paper we report the investigations of the NC from copolymer butylmetacrylate and styrene and ratio of 1:1 in whose matrix Eu(TTA) 3 H 2 O, Eu(TTA) 3 Phen and Eu(DBM) 3 Phen were introduced [1][2][3][4]. For all investigated materials with NC, photoluminescence levels caused by f-f transitions of Eu were identified.…”

Section: Introductionmentioning

confidence: 99%

Photoluminescence properties of PVP/Eu(TTA)2(Phen3PO)2NO3 nanocomposites

Verlan¹,

Iovu²,

Culeac³

et al. 2011

Journal of Non-Crystalline Solids

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“…In a previous paper we reported the investigations of the NC from copolymer butylmetacrilate and styrene and ratio of 1:1 in whose matrix Eu(TTA) 3 H 2 O and Eu(TTA) 3 Phen were introduced [1,2]. In all investigated materials with NC, PL levels caused by f levels transitions of Eu atom were identified.…”

Section: +mentioning

confidence: 99%

Optical absorption and photoluminescence of lumonophore nanocomposites

Verlan

Iovu

Andriesh

et al. 2011

Phys. Status Solidi C

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The europium complex tris(dibenzoylmethane)(monophenanthroline)europium (III) (Eu(DBM)3Phen) was successfully incorporated with different molar ratios into organic copolymer matrix of styrene:butylmethacrilate (1:1) (SBMA) via sol–gel process. Spin‐coated thin films were obtained. The layers turn out to be transparent in optical range of investigation. Absorption and luminescence properties of a europium complex on each step of technology nanocomposites of the pure Eu(DBM)3Phen complex powder, its solution with SBMA and the resultant thin films nanocomposites (NC) phosphors (SBMA ‐Eu(DBM)3Phen) were investigated. The microscopic investigations of the morphology of the NC surface show that the dimensions of Eu(DBM)3Phen particles, incorporated in the polymer matrix are less than 100 nm. The forbidden bands of NC were obtained. Photoluminescence (PL) spectra have been measured exciting with N2‐laser (λ = 0.334 μm) and they were revealed the radiative bands between the energy levels of the europium ions centered at 578, 590, 615, 652, and 705 nm and can be attributed to the spin forbidden f‐f transitions 5D0 → 7Fi (i = 0,1,2,3 and 4), respectively (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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“…The improvement of their luminescence properties depends on the type of ligands used for surrounding the rare earth ions. Photoactive complexes of the organic compounds of lanthanides may be used, for example, Eu 3+ chelated with β-diketonates, or cyclic ligands for obtaining different coordination numbers of Eu 3+ (varies from 6 to 9) [1,2]. The fundamental studies of the photophysical spectroscopy of compounds with rare earth ions with effective luminescence with the half-width of the luminescence bands less than 10 nm in the visible and near-infrared regions of the spectrum at different excitations are of special interest.…”

Section: Introductionmentioning

confidence: 99%

“…The 4f → 4f transitions of the Re ion are shielded outdoor and in this way it minimizes irradiative transitions. From our preliminary study of NCs with Eu(III) coordination compounds, the amplification of the photoluminescence of NCs in comparison with the PL of Eu(TTA) 2 (Ph 3 PO) 2 NO 3 powders at equal conditions of excitation was found [3,4].…”

Section: Introductionmentioning

confidence: 99%