Showing papers in "Journal of Luminescence in 2010"

TL;DR: In this paper, the free-ion Hamiltonian model and Judd-Ofelt theory have been used to analyze the energy level scheme and spectral intensities of Dy 3+ ions in CFB glasses.

TL;DR: In this article, the photocatalytic activity of the prepared ZnO nanoparticles has been investigated for the degradation of ciprofloxacin drug under UV light irradiation in aqueous solutions of different pH values.

TL;DR: In this paper, the FTIR spectra reveal that the glasses contain BO 3, BO 4, non-bridging oxygen and strong OH − bonds, and the dependence of the spectral characteristics of Sm 3+ ions due to compositional changes have been examined and reported.

TL;DR: In this article, the authors investigated the effect of changing concentration of P2O5 and Yb3+ ions on spectroscopic properties of Er3+ and co-doped TeO2-ZnO-Na2O-Er2O3 glasses.

TL;DR: In this paper, the authors studied the elastico mechanoluminescence (ML) of ZnS:Mn nanoparticles and derived expressions for the dependence of ML intensity on several parameters.

TL;DR: In this article, the effect of acid yellow 11(AY) exposure to the common protein bovine serum albumin (BSA) by several spectroscopic techniques including fluorescence spectroscopy, ultraviolet spectrophotometry (UV) and circular dichroism (CD).

TL;DR: LiCaBO3:M (M=Eu3+, Sm3+, Tb3+, Ce3+, Dy3+) was synthesized by a normal solid-state reaction using CaCO3, H3BO3, Li2 CO3, Na2 CO 3, K2CO 3, Eu2O3, Sm 2 O3, Tb4O7, CeO2 and Dy 2O3 as starting materials.

TL;DR: In this article, thermal, structural and optical properties of Nd3+ ions in tellurite glass (TeO2−ZnO−Na2O−Li2O-Nb2O5) have been investigated.

TL;DR: In this article, the binding properties on theasinesin to human serum albumin (HSA) have been studied for the first time using fluorescence spectroscopy in combination with UV-vis absorbance spectrography.

TL;DR: In this paper, a number of techniques, including X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, and photoluminescence (PL) were used to characterize the obtained ZnO thin films.

TL;DR: In this article, the formation processes and phase impurity of phosphors are characterized by thermogravimetry-differential thermal analysis (TG-DTA) and power X-ray diffraction (XRD).

TL;DR: In this paper, the interaction between three kinds of flavonoids and bovine serum albumin (BSA) was investigated by fluorescence and UV-vis absorption spectrometry.

TL;DR: In this article, the structure of the nanoparticles has been analyzed using X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscopy (TEM), and UV-vis spectrometer.

TL;DR: In this paper, the upconversion emissions in Er 3+ /Yb 3+ -codoped SiO 2 -BaF 2 -ZnF 2 glass have been observed under 980nm excitation.

TL;DR: In this paper, Tb 3+ ions doped and Tm/Tb/Sm co-doped glasses for light-emitting-diodes (LED) applications have been synthesized by melt quenching method.

TL;DR: Stern–Volmer analysis of the data showed that the quenching mechanism is predominantly collisional for the binding of ciprofloxacin HCl and enrofl oxacin while both static and collisional quench mechanisms are operative in the case of levofloxacIn and sparfloxACin.

TL;DR: In this paper, the room temperature photoluminescence (PL) spectra of Sm3+-doped CaWO4 nanoparticles doped with different concentrations under 405nm excitation have been investigated.

TL;DR: In this paper, the authors present an efficient photon-echo experiment based on atomic frequency combs, which can store up to 35% of the energy of the input pulse in a Pr3+ -doped Y2SiO5 crystal.

TL;DR: In this paper, the photoluminescence and afterglow behavior of Eu 2+ and Eu 3+ in Sr 3 Al 2 O 6 matrix co-doped with Dy 3+ were reported.

TL;DR: In this article, the structure and morphology of materials have been examined by X-ray diffraction, Raman spectra and scanning electron microscopy, which exhibited homogeneous aggregates of varying shapes and sizes, which are composed of a large number of small cuboids and broken cuboids.

TL;DR: In this paper, a new numerical model for thermal quenching in quartz, based on the previously suggested Mott-Seitz mechanism, is presented, and the temperature dependence of luminescence lifetimes in quartz is studied as a function of the stimulation temperature.

TL;DR: In this article, Nanometer-sized Eu 3+ -doped ZnS and Mn 2+ -drone-doped X-ray diffraction (XRD) and photoluminescent spectroscopy techniques were used to characterize the structures and properties of those materials.

TL;DR: In this paper, optical and structural properties of lanthanide doped non-metal oxides of the form APO 4 :Ln 3+ with A a rare earth and of transition metal oxides with formula ABO 4 : Ln 3 + with B a transition metal were analyzed.

TL;DR: In this paper, a single crystal of Li2B4O7 doped with Cu (0.5 ) was grown using the Czochralski technique and the TL sensitivity of the grown single crystal was found to be 3.3 times that of a conventional TL phosphor, TLD-100.

TL;DR: In this article, photoluminescence properties of annealed ZnO thin films deposited onto a porous silicon (PS) surface by rf-sputtering were investigated.

TL;DR: In this paper, the decay kinetics of the Pr3+ 5d−4f emission in Ca3Sc2Si3O12:Pr3+ are characterized by decay times in the range 25−28 ns with no significant rise after the excitation pulse.

TL;DR: The mechanism of interaction of an antidepressant, fluoxetine hydrochloride (FLX) with bovine serum albumin (BSA) has been studied by different spectroscopic techniques under physiological conditions as discussed by the authors.

TL;DR: In this paper, the state of the art in the creation of isolated and small ensembles of optically active diamond defect centers, including nitrogen and nickel-related centres, is discussed.

TL;DR: The interaction between LMF and Hlf has been verified as consistent with the staticQuenching procedure and the quenching mechanism is related to the energy transfer.

TL;DR: In this paper, the binding of naringenin to bovine serum albumin (BSA) was studied at physiological conditions (pH=7.40) by fluorescence and UV-vis spectroscopy.