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Journal articles on the topic 'IR Luminescence'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Mar’ina, Ul’ana A., Viktor A. Vorob’ev, and Alexandr P. Mar’in. "IR luminescence of CaGa 2O 4 : Yb 3+ excited by 940 and 980 nm radiation." Modern Electronic Materials 6, no. 1 (2020): 31–36. http://dx.doi.org/10.3897/j.moem.6.1.55165.

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Existing calcium gallate CaGa2O4 based luminescent materials radiating in visible IR region have been reviewed. IR luminophores have been studied but slightly but their practical implementation is of interest. CaGa2O4 specimens activated with Yb3+ rare-earth ions have been synthesized using the solid-state method. The structure and luminescent properties of CaGa2O4 : Yb3+ have been studied. CaGa2O4 : Yb3+ excitation with 940 and 980 nm radiation generates luminescence in the 980–1100 nm region. Data on the electron level structure in Yb3+ ions suggest that the excitation and luminescence occur

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2

Ren, Jinjun, Jianrong Qiu, Danping Chen, Chen Wang, Xiongwei Jiang, and Congshan Zhu. "Infrared luminescence properties of bismuth-doped barium silicate glasses." Journal of Materials Research 22, no. 7 (2007): 1954–58. http://dx.doi.org/10.1557/jmr.2007.0245.

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Infrared (IR) luminescence covering 1.1 to ∼1.6 μm wavelength region was observed from bismuth-doped barium silicate glasses, excited by a laser diode at 808 nm wavelength region, at room temperature. The peak of the IR luminescence appears at 1325 nm. A full width half-maximum (FWHM) and the lifetime of the fluorescence is more than 200 nm and 400 μs, respectively. The fluorescence intensity increases with Al2O3 content, but decreases with BaO content. We suggest that the IR luminescence should be ascribed to the low valence state of bismuth Bi2+ or Bi+, and Al3+ ions play an indirect dispers

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3

Mar’ina, Ul’ana A., Viktor A. Vorob’ev, and Alexandr P. Mar’in. "CaSnO 3: Yb 3+, Er 3+, Ho 3+ system synthesis and study of its luminescence under IR excitation." Modern Electronic Materials 4, no. 2 (2018): 71–75. http://dx.doi.org/10.3897/j.moem.4.2.38545.

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Solid state synthesis of Perovskite-like calcium stannate structure activated with three rare-Earth metal ions Yb3+,Er3+,Но3+ has been studied. The formation of the CaSnO3 : Yb3+,Er3+,Но3+ luminescent structure requires the following synthesis conditions: anneal temperature 1250 °C and duration at least 18 h. The luminescent properties of the specimens have been studied under 960 nm semiconductor diode laser excitation. The luminescence spectra contain bands in the visible and IR spectral regions. Yb3+ ions have been shown to act predominantly as sensibilizers capable of transferring part of a

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4

Mar'ina, Ul'ana A., Viktor A. Vorob'ev, and Alexandr P. Mar'in. "IR luminescence of CaGa2O4 : Yb3+ excited by 940 and 980 nm radiation." Modern Electronic Materials 6, no. (1) (2020): 31–36. https://doi.org/10.3897/j.moem.6.1.55165.

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Existing calcium gallate CaGa<sub>2</sub>O<sub>4</sub> based luminescent materials radiating in visible IR region have been reviewed. IR luminophores have been studied but slightly but their practical implementation is of interest. CaGa<sub>2</sub>O<sub>4</sub> specimens activated with Yb<sup>3+</sup> rare-earth ions have been synthesized using the solid-state method. The structure and luminescent properties of CaGa<sub>2</sub>O<sub>4</sub> : Yb<sup>3+</sup> have been studied. CaGa<sub>2</sub>O<sub>4</sub> : Yb<sup>3+</sup> excitation with 940 and 980 nm radiation generates luminescence in the

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5

Mar`in, A. P., U. A. Mar`ina, V. A. Vorob`ev, and R. V. Pigulev. "Kinetics of luminescence calcium gallate activated by Yb3+, Er3+ ions." Izvestiya Vysshikh Uchebnykh Zavedenii. Materialy Elektronnoi Tekhniki = Materials of Electronics Engineering 23, no. 3 (2020): 213–21. http://dx.doi.org/10.17073/1609-3577-2020-3-213-221.

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The paper presents the results of a study of the luminescent properties of calcium gallate activated by trivalent rare earth ions Yb3+ and Er3+. IR luminescence spectra of samples with a single activator Ca1‑хYbxGa2O4,Ca1‑хErxGa2O4 were studied when excited by radiation sources with a wavelength of 940 and 790 nm, respectively. The dependence of the luminescence intensity of samples on the concentration of rare earth ions is obtained. When the two-activator composition of Ca1‑х‑yYbxEryGa2O4 is excited by a semiconductor laser diode with a wavelength of 940 nm, IR luminescence is registered in

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6

Tverjanovich, Andrey, Alexandra Mikhaylova, and Eugene Bychkov. "Mechanical Alloying and Concentration Quenching of the Luminescence of Pr3+ Ions in Chalcogenide Glass." Solids 5, no. 2 (2024): 292–302. http://dx.doi.org/10.3390/solids5020019.

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The disadvantage of chalcogenide glasses containing rare earth ions as luminescent materials for the IR optical range is the strong concentration quenching of luminescence due to the non-uniform distribution of rare earth ions in the glass matrix. This study investigates the effect of grinding chalcogenide glass containing Pr3+ ions in a planetary ball mill on its luminescent properties in the near-IR range, as well as its optical properties and structure. The results indicate that milling, under certain conditions, leads to a decrease in the concentration quenching of the luminescence of Pr3+

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7

Metherell, Alexander J., Christophe Curty, Andreas Zaugg, Suad T. Saad, Genevieve H. Dennison, and Michael D. Ward. "Converting an intensity-based sensor to a ratiometric sensor: luminescence colour switching of an Ir/Eu dyad upon binding of a V-series chemical warfare agent simulant." Journal of Materials Chemistry C 4, no. 41 (2016): 9664–68. http://dx.doi.org/10.1039/c6tc03754b.

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8

Smirnov M. V., Sidorov N. V., and Palatnikov M. N. "14-21." Optics and Spectroscopy 132, no. 1 (2022): 160. http://dx.doi.org/10.21883/eos.2022.01.53002.14-21.

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A brief review of the features of the defect structure and studies of the luminescent properties of nonlinear optical lithium niobate crystals of various compositions and genesis was given. It was established that the electron-hole pair NbNb4+-O- in the oxygen-octahedral cluster NbO6 emitted in the short-wavelength region of the visible spectrum (400-500 nm), while point defects (VLi and NbNb4+-NbLi4+ bipolarons) - in the long-wavelength region (500-620 nm). At the ratio of Li/Nb≈1 the luminescence was extinguished in the visible region of the spectrum due to decreasing the intrinsic luminesce

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9

Смирнов, М. В., Н. В. Сидоров та М. Н. Палатников. "Люминесцентные свойства нестехиометрических кристаллов ниобата лития различного состава и генезиса (обзор)". Оптика и спектроскопия 130, № 1 (2022): 171. http://dx.doi.org/10.21883/os.2022.01.51905.14-21.

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A brief review of the features of the defect structure and studies of the luminescent properties of nonlinear optical lithium niobate crystals of various compositions and genesis was given. It was established that the electron-hole pair NbNb4+-O- in the oxygen-octahedral cluster NbO6 emitted in the short-wavelength region of the visible spectrum (400-500 nm), while point defects (VLi and NbNb4+-NbLi4+ bipolarons) - in the long-wavelength region (500-620 nm). At the ratio of Li/Nb≈1 the luminescence was extinguished in the visible region of the spectrum due to decreasing the intrinsic luminesce

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10

Grevtseva, Irina G., Oleg V. Ovchinnikov, Mikhail S. Smirnov, Anatoly N. Latyshev, Sergey Vladimirovich Aslanov, and Marina Sergeevna Astashkina. "Effect of plasmonic Au nanoparticles on IR luminescence of Ag2S quantum dots." Kondensirovannye sredy i mezhfaznye granitsy = Condensed Matter and Interphases 26, no. 3 (2024): 424–30. http://dx.doi.org/10.17308/kcmf.2024.26/12217.

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Luminescent manifestations of the interaction of Ag2S quantum dots (QDs) with Au nanorods (NRs) depending on the overlap degree of the corresponding luminescence bands and plasmon resonance peaks have been experimentally established. Under spectral resonance conditions, the possibility of controlling the intensity of QDs luminescence by changing the interaction with Au NRs by varying the distance between the components of the plasmon-exciton mixture has been demonstrated. In turn it determines the influence of the near-field of metal nanoparticles on photoprocesses in Ag2S QDs. The detuning of

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11

Smola, Serhii, Nataliia Rusakova, Olga Snurnikova, Elena Alekseeva, and Tatyana Kirichenko. "PECULIARITIES OF STRUCTURE AND SPECTRAL-LUMINESCENT PROPERTIES OF CARBOXYMETHOXY-SUBSTITUTED CALIX[4]ARENES AND THEIR COMPLEXES WITH LANTHANIDES." Ukrainian Chemistry Journal 86, no. 3 (2020): 9–18. http://dx.doi.org/10.33609/0041-6045.86.3.2020.9-18.

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Spectral-luminescent properties of a variety of carboxymethoxy-substituted p-tert-butyl-calix[4]arenes and their complexes with lanthanides (Nd, Er, Yb) that exhibit the 4f-luminescence in the IR-spectrum region have been investigated. The effect of substitution of hydrogen phenolic atoms by carboxymethoxy groups on the stability and spectral-luminescent characteristics of both the ligands and lanthanide complexes was analyzed. Thus, based on the combination of the results obtained by means of elemental analysis, mass spectrometry, IR and 1H NMR spectroscopy, and taking into account the data o

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12

Mar'ina, Ul'ana A., Viktor A. Vorob'ev, and Alexandr P. Mar'in. "CaSnO3: Yb3+, Er3+, Ho3+ system synthesis and study of its luminescence under IR excitation." Modern Electronic Materials 4, no. (2) (2018): 71–75. https://doi.org/10.3897/j.moem.4.2.38545.

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Solid state synthesis of Perovskite-like calcium stannate structure activated with three rare-Earth metal ions Yb<sup>3+</sup>,Er<sup>3+</sup>,Но<sup>3+</sup> has been studied. The formation of the CaSnO<sub>3</sub> : Yb<sup>3+</sup>,Er<sup>3+</sup>,Но<sup>3+</sup> luminescent structure requires the following synthesis conditions: anneal temperature 1250 °C and duration at least 18 h. The luminescent properties of the specimens have been studied under 960 nm semiconductor diode laser excitation. The luminescence spectra contain bands in the visible and IR spectral regions. Yb<sup>3+</sup> ions

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13

Zhao, Ming Yan, Rui Jun Ma, Ying Nan Chen, et al. "Luminescence Properties of Inert Lanthanide Ion Doped Europium Complexes with 2-Pyrazinecarboxylic Acid and Butanedioic Acid." Applied Mechanics and Materials 271-272 (December 2012): 55–59. http://dx.doi.org/10.4028/www.scientific.net/amm.271-272.55.

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Nine europium complexes with 2-pyrazinecarboxylic acid (Hpyca) and butanedioic acid (HBDA) were synthesized and characterized by elemental, IR, EDTA titration, ICP, and TG-DSC analyses. The results show that the complexes have the compositions of Eu(Pyca)(BDA)•2H2O, Eu0.7La0.3(Pyca)(BDA)•2H2O, Eu0.6La0.4(pyca)(BDA)•3H2O, Eu0.5La0.5(pyca)(BDA)•4H2O, Eu0.7Y0.3(Pyca)(BDA)•3H2O, Eu0.6Y0.4 (Pyca)(BDA)•2H2O, Eu0.5Y0.5(Pyca)(BDA)•3H2O, Eu0.7Gd0.3(Pyca)(BDA)•2H2O and Eu0.5Gd0.5(Pyca)(BDA)•2H2O. IR spectra indicate that lanthanide ions coordinate with the carboxylic oxygen atoms and nitrogen atoms of H

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14

Zhang, Hong Yan, Jun Wang, and Shao Hua Fan. "Bifunctional Fe₃O₄@SiO₂@Eu-Polyoxometalates Nanoparticles and Study on their Magnetism and Luminescence." Advanced Materials Research 284-286 (July 2011): 2224–29. http://dx.doi.org/10.4028/www.scientific.net/amr.284-286.2224.

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In this paper, we report the synthesis of the bifunctional Fe3O4@SiO2@Eu-polyoxometalates particles. The magnetite nanoparticles (Fe3O4) homogeneously coated with silica spheres prepared with the Stöber method. The so-obtained Fe3O4@SiO2 core/shell particles were modified by 3-aminopropyltriethoxysilane and finally grafted with the luminescent Europium -polyoxometalates. The core-shell particles were characterized by scanning electron microscopy, transmission electron microscopy, FT-IR, UV, magnetism and luminescence spectroscopy. The results indicated that the core-shell particles show both i

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15

Bas, Alin-Ciprian, Xavier Thompson, Lionel Salmon, et al. "Bilayer Thin Films That Combine Luminescent and Spin Crossover Properties for an Efficient and Reversible Fluorescence Switching." Magnetochemistry 5, no. 2 (2019): 28. http://dx.doi.org/10.3390/magnetochemistry5020028.

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We report on the vacuum thermal deposition of bilayer thin films of the luminescent complex Ir(ppy)3, tris[2-phenylpyridinato-C2,N]iridium(III), and the spin crossover complex [Fe(HB(tz)3)2], bis[hydrotris(1,2,4-triazol-1-yl)borate]iron(II). Switching the spin state of iron ions from the low spin to the high spin state around 337 K leads to a reversible jump of the luminescence intensity, while the spectrum shape and the luminescence lifetime remain unchanged. The luminescence modulation occurs due to the different UV light absorption properties of the iron complex in the two spin states and i

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16

Feng, Yi Min. "Synthesis and Luminescent Properties of Two Zn (II) Complexes with Schiff-Base Ligand." Advanced Materials Research 322 (August 2011): 341–44. http://dx.doi.org/10.4028/www.scientific.net/amr.322.341.

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Two Zn (II) complexes have been prepared by reaction of zinc acetate dihydrate with Schiff-base ligands. The IR spectra of complexes were measured. The luminescence properties of the Zn (II) complexes in solid and in methanol, ethanol and DMSO solution were investigated and the effects of organic solvents on the luminescent intensity of Zn (II) complexes also were studied. The results show that the Zn (II) ions formed stable complexes. The complexes exhibited maximum fluorescence emissions in blue region and the organic solvents have effect on the luminescence intensity.

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17

Wang, Ai Ling, Hai Xia Zhang, Kai Kong, et al. "Enhanced Luminescence of Terbium Complexes with 2,3-Pyrazinedicarboxylate by Y(III) Doping." Advanced Materials Research 750-752 (August 2013): 1007–10. http://dx.doi.org/10.4028/www.scientific.net/amr.750-752.1007.

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Ten kinds of terbium doped inert yttrium complexes with 2,3-pyrazinedicarboxylate (2,3-pzdc2-) have been synthesized. Characterization results indicate that the complexes have the compositions of Tb (pzdc)1.55H2O and TbxYy(pzdc)1.55H2O (x:y=0.10:0.90; 0.20:0.80; 0.30:0.70; 0.40:0.60; 0.60:0.40; 0.70:0.30; 0.80:0.20; 0.90:0.10). IR spectra show that the lanthanide ions coordinate with the carboxylic oxygen atoms and nitrogen atoms of the ligands. Luminescence spectra show that the Y(III) ions can remarkably increase the luminescent intensities of terbium complexes. And Tb0.7Y0.3(pzdc)1.55H2O ex

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18

Ying, B., and W. G. Sheng. "Preparation and luminescent properties of a rare earth borate red light-emitting material." Materials Science-Poland 36, no. 3 (2018): 359–63. http://dx.doi.org/10.2478/msp-2018-0057.

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AbstractA new hydrated rare earth borate K2O·CaO·4B2O3·12H2O:Eu was prepared by water solution method. The crystal structure, morphology, luminescence properties were investigated via XRD, IR, TG-DSC and SEM, respectively, and it was shown that one single crystal was obtained via spontaneous crystallization. The luminescent properties were also investigated by F-4600 spectrophotometer.

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19

Бакланова, Я. В., О. А. Липина, Л. Г. Максимова та ін. "Люминофор ближнего и коротковолнового ИК-диапазона на основе ниобата литий-лантана со структурой кубического граната". Физика твердого тела 61, № 5 (2019): 967. http://dx.doi.org/10.21883/ftt.2019.05.47603.10f.

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AbstractCubic garnets activated by neodymium and holmium, Li_6CaLa_2Nb_2O_12:Nd^3+,Ho^3+, were obtained by solid-state method. The main regularities of changes in the luminescence properties of Li_6C-aLa_2Nb_2O_12:Nd^3+,Ho^3+ solid solutions in the visible, near-IR, and short-wave IR ranges under 808 nm laser diode radiation are determined. The energy transfer mechanism between active centers, involving the participation of Nd^3+ ions as sensitizers for the luminescence of Ho^3+ ions, is proposed. Low phonon energy, high luminescence intensity in the range of 2.0–3.0 μm, and weak up-conversion

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20

Bolotov, V. V., and V. E. Kang. "IR luminescence in thermally treated silicon." Semiconductors 43, no. 1 (2009): 26–28. http://dx.doi.org/10.1134/s1063782609010060.

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21

Hedley, Gordon J., Arvydas Ruseckas, and Ifor D. W. Samuel. "Ultrafast luminescence in Ir(ppy)3." Chemical Physics Letters 450, no. 4-6 (2008): 292–96. http://dx.doi.org/10.1016/j.cplett.2007.11.028.

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22

Malyutenko, V. K., S. S. Bolgov, and E. I. Yablonovsky. "A new type of IR luminescence." Infrared Physics 25, no. 1-2 (1985): 115–19. http://dx.doi.org/10.1016/0020-0891(85)90065-x.

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23

Shmurak S. Z., Kedrov V. V., Kiselev A. P., Fursova T. N., and Zver'kova I. I. "Spectral characteristics and energy transfer Ce-=SUP=-3+-=/SUP=-->Tb-=SUP=-3+-=/SUP=-->Eu-=SUP=-3+-=/SUP=- in LuBO-=SUB=-3-=/SUB=-(Ce, Tb, Eu) compound." Physics of the Solid State 64, no. 1 (2022): 102. http://dx.doi.org/10.21883/pss.2022.01.52496.217.

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The structure, IR, luminescence, and luminescence excitation spectra ofCe3+, Tb3+, and Eu3+ ions inLu1-2xCexEuxBO3 and Lu0.91-2xCexTb0.09EuxBO3 solid solutions were studied. The minimum "threshold" distance between Ce3+ and Eu3+ ions was estimated, at which there is no charge transfer between these ions, leading to the quenching of Ce3+ and Eu3+ luminescence. It isshown that in Lu0.91-2xCexTb0.09EuxBO3 compounds, the range of Ce and Eu concentrations of 0.2-0.25 at.% is optimal for obtaining the maximum luminous intensity of this compound. Keywords: phosphors for LEDs, rare earth orthoborates,

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24

Dimova, Maya, Gerard Panczer, and Michael Gaft. "Spectroscopic study of barite from the Kremikovtsi Deposit (Bulgaria) with implication for its origin." Annales g?ologiques de la Peninsule balkanique, no. 67 (2006): 101–8. http://dx.doi.org/10.2298/gabp0667101d.

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Different genetic types (endogene and supergene) of barite from the Kremikovtsi deposit (Bulgaria) were studied by Laser-induced time-resolved luminescence (LITRL), Infrared (IR) and Raman spectroscopy. The IR spectra of the endogene barites are quite similar to those reported in the literature and do not show appreciable differences among them. The IR spectra of the supergene barites are almost identical to those of the endogene ones in respect to the positions of the vibrational modes ?1, ?2 and ?4 of SO4 2 except for a shift of 3 cm-1 for the ? 3 band. They displayed a presence of additiona

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25

Smirnov, Mikhail S., Aleksey S. Perepelitsa, Tamara S. Kondratenko, Andrey I. Zvyagin, and Oleg V. Ovchinnikov. "Spectral properties of hybrid associates of colloidal quantum dots Zn0.5Cd0.5S, europium tenoyltrifluoroacetonate and methylene blue." EPJ Web of Conferences 190 (2018): 04017. http://dx.doi.org/10.1051/epjconf/201819004017.

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Hybrid associates formed from colloidal Zn0.5Cd0.5S quantum dots, passivated with thioglycolic acid, europium tenoyltrioteracetonate and methylene blue molecules, absorption, luminescence, IR and time-resolved spectroscopy technique are studied. The shift of the IR absorption bands of COO- and C=O groups of thioglycolic acid and europium thenoyltrifluoroacetonate has been detected. An increase in the efficiency of excitation of europium luminescence and a simultaneous increase lifetime of its luminescence upon adsorption on Zn0.5Cd0.5S quantum dots were found. Addition of methylene blue (thion

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26

Gabr, Moustafa T., and F. Christopher Pigge. "Expanding the Toolbox for Label-Free Enzyme Assays: A Dinuclear Platinum(II) Complex/DNA Ensemble with Switchable Near-IR Emission." Molecules 24, no. 23 (2019): 4390. http://dx.doi.org/10.3390/molecules24234390.

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Switchable luminescent bioprobes whose emission can be turned on as a function of specific enzymatic activity are emerging as important tools in chemical biology. We report a promising platform for the development of label-free and continuous enzymatic assays in high-throughput mode based on the reversible solvent-induced self-assembly of a neutral dinuclear Pt(II) complex. To demonstrate the utility of this strategy, the switchable luminescence of a dinuclear Pt(II) complex was utilized in developing an experimentally simple, fast (10 min), low cost, and label-free turn-on luminescence assay

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27

Clark-Balzan, Laine. "Source and characteristics of blue, infrared (IR), and post-IR IR stimulated signals from gypsum-rich samples." Ancient TL 34, no. 1 (2016): 6–13. https://doi.org/10.26034/la.atl.2016.499.

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Samples collected from gypsiferous deposits in the Nefud Desert, Saudi Arabia, yielded anomalous signals when presumed quartz and feldspar extracts were measured with BSL and pIRIR290 SAR protocols, respectively. Subsequent scanning electron microscopy analysis indicated that the majority of extracted coarse grains were gypsum instead of quartz or feldspar. Luminescence signals were detected from gypsum at room or low (50 ◦C) temperature when stimulated with blue (UV detection: 330, 380 nm) or IR (blue detection) light. No UV (330 nm) emissions were detected with IRSL stimulation. A modified S

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Рочева, В. В., А. Г. Савельев, А. В. Нечаев та ін. "Трехмерная люминесцентная томографическая визуализация биотканей-=SUP=-*-=/SUP=-". Журнал технической физики 126, № 1 (2019): 87. http://dx.doi.org/10.21883/os.2019.01.47060.261-18.

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AbstractWe propose a method for obtaining a fluorescence tomographic image for visualization and diagnosis of tissues of a living organism. The method is based on the excitation of the luminescence of multicolor upconverting nanoparticles localized in the depth of the biological tissue or a phantom imitating it by IR light. By recording the changes in the shape of the spectrum of the intensity of luminescence radiation from luminescent nanoparticles on the surface of the tissue, it is possible to obtain information about the depth of their occurrence. To implement this approach, upconverting n

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29

Fantoni, R., E. Borsella, S. Piccirillo, A. Giardini-Guidoni, and R. Teghil. "IR Photodecomposition of CH3COCF3." Laser Chemistry 8, no. 2-4 (1988): 385–408. http://dx.doi.org/10.1155/lc.8.385.

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IR multiple-photon decomposition of 1,1,1-trifluoroacetone has been achieved in bulk by irradiating molecules with 970.55 cm−1 laser radiation. In collisional regime the onset of laser induced breakdown has been observed. Primary fragmentation and subsequent ion and radical secondary reactions have been monitored detecting the spontaneous luminescence with a gateable Optical Multichannel Analyzer.

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Zhu, Jin Liang, Sheng Li Liu, Liang Cai Yu, and Tao Ouyang. "Synthesis, Characterization and Luminescence of Europium, Terbium Complexes of 1,1'-(Pyridin-2,6-Diyl) Bis-3-P-Tolylpropane-1,3-Dione." Advanced Materials Research 306-307 (August 2011): 228–33. http://dx.doi.org/10.4028/www.scientific.net/amr.306-307.228.

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A new ligand, 1,1'-(pyridin-2,6-diyl)bis-3-p-tolylpropane-1,3-dione(H2L), was prepared and its crystal structure displays its enol isomer. The binary complex, Ln2L3·4H2O [Ln = Eu(III) and Tb(III)], were synthesized by the reaction of synthesized ligand (H2L) and Ln(III). With 1,10-phenanthroline (Phen) as the synergistic ligand, the ternary complex, Ln2L3(Phen)2 [Ln = Eu(III) and Tb(III)], were synthesized. The compounds were characterized by 1H-NMR spectroscopy, MS, IR, UV, DTA-TG and fluorescence spectrum. The luminescent properties of the ligand and its complexes were investigated and the r

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Serkina, Ksenia, Irina Stepanova, Aleksandr Pynenkov, et al. "Bismuth-Germanate Glasses: Synthesis, Structure, Luminescence, and Crystallization." Ceramics 6, no. 3 (2023): 1559–72. http://dx.doi.org/10.3390/ceramics6030097.

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Bismuth-germanate glasses, which are well known as a promising active medium for broadband near-infrared spectral range fiber lasers and as an initial matrix for nonlinear optical glass ceramics, have been synthesized in a 5–50 mol% Bi2O3 wide concentration range. Their structural and physical characteristics were studied by Raman and FT-IR spectroscopy, differential scanning calorimetry, X-ray diffraction, optical, and luminescence methods. It has been found that the main structural units of glasses are [BiO6] and [GeO4]. The growth in bismuth oxide content resulted in an increase in density

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Gao, Tai-Bao, Zhong-Ze Qu, Zhe Tang, and Deng-Ke Cao. "Cyclometalated Ir(iii) complexes incorporating a photoactive anthracene-based ligand: syntheses, crystal structures and luminescence switching by light irradiation." Dalton Transactions 46, no. 44 (2017): 15443–50. http://dx.doi.org/10.1039/c7dt02967e.

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Compound aip and its Ir(iii) complexes [Ir(dfppy)<sub>2</sub>(aip)](PF<sub>6</sub>) (1) and [Ir(ppy)<sub>2</sub>(aip)](PF<sub>6</sub>) (2) show light-irradiation-induced luminescence switching behaviors.

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Qu, Zhong-Ze, Tai-Bao Gao, Jing Wen, Kai Rui, Haibo Ma та Deng-Ke Cao. "Cyclometalated Ir(iii) complexes [Ir(tpy)(bbibH2)Cl][PF6] and [Ir(tpy)(bmbib)Cl][PF6]: intramolecular π⋯π interactions leading to facile synthesis and enhanced luminescence". Dalton Transactions 47, № 29 (2018): 9779–86. http://dx.doi.org/10.1039/c8dt01922c.

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Wu, Botao, Jianrong Qiu, Nan Jiang та ін. "Optical properties of transparent alkali gallium silicate glass-ceramics containing Ni2+-doped β-Ga2O3 nanocrystals". Journal of Materials Research 22, № 12 (2007): 3410–14. http://dx.doi.org/10.1557/jmr.2007.0429.

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Broadband near-infrared (IR) luminescence in transparent alkali gallium silicate glass-ceramics containing Ni2+-doped β-Ga2O3 nanocrystals was observed. This broadband emission could be attributed to the 3T2g (3F) → 3A2g (3F) transition of octahedral Ni2+ ions in glass-ceramics. The full width at half-maximum (FWHM) of the near-IR luminescence and fluorescent lifetime of the glass-ceramic doped with 0.10 mol% NiO were 260 nm and ∼1220 μs, respectively. It is expected that transparent Ni2+-doped β-Ga2O3 glass-ceramics with this broad near-IR emission and long fluorescent lifetime have potential

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35

Grevtseva, Irina G., Mikhail S. Smirnov, Kirill S. Chirkov, and Oleg V. Ovchinnikov. "Trap state and exciton luminescence of colloidal PbS quantum dots coated with thioglycolic acid molecules." Kondensirovannye sredy i mezhfaznye granitsy = Condensed Matter and Interphases 25, no. 2 (2023): 182–89. http://dx.doi.org/10.17308/kcmf.2023.25/11099.

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This work presents the results of studying the IR luminescence of colloid PbS quantum dots coated with molecules of thioglycolic acid. Luminescence of the sample was recorded using the InGaAs image sensor PDF 10C/M (ThorlabsInc., USA) and a diffraction monochromator with 600 mm-1 grating. To study the temperature dependence of luminescence, the sample was cooled in a nitrogen cryostat down to 80 К. A redistribution of the luminescence intensity between two peaks (1100 and 1280 nm) was identified upon a decrease in temperature. It was shown that an exciton absorption peak was present in the exc

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Pei, Yu, Yan Sun, Meijia Huang, et al. "Ir(III) Complexes with AIE Characteristics for Biological Applications." Biosensors 12, no. 12 (2022): 1104. http://dx.doi.org/10.3390/bios12121104.

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Both biological process detection and disease diagnosis on the basis of luminescence technology can provide comprehensive insights into the mechanisms of life and disease pathogenesis and also accurately guide therapeutics. As a family of prominent luminescent materials, Ir(III) complexes with aggregation-induced emission (AIE) tendency have been recently explored at a tremendous pace for biological applications, by virtue of their various distinct advantages, such as great stability in biological media, excellent fluorescence properties and distinctive photosensitizing features. Significant b

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Rusakova, Natalya, Nikolay Semenishyn, and Yuriy Korovin. "Heteronuclear lanthanide-containing complexes on the base of modified porphyrins and their luminescent properties." Journal of Porphyrins and Phthalocyanines 14, no. 02 (2010): 166–69. http://dx.doi.org/10.1142/s1088424610001817.

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The mono- and heteronuclear complexes of the general formula M-ATPP-Ln-L ( Ln = Yb , Lu; M = Zn , Cu , 2H ; ATPP - mono-p-aminotetraphenylporphyrin; L = EDTA - ethylenediaminetetraacetic acid or DTPA - diethylenetriaminepentaacetic acid) were prepared and characterized by elemental analysis, MS, 1H NMR, UV-vis and luminescent spectra. In all compounds the lanthanide ion is coordinated by aminopolycarboxylic fragment only. The spectra of metal complexes were compared with those of free-base porphyrins. Luminescence studies showed that porphyrin fragment of ligands absorbed the visible light and

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Sykes, Daniel, Ahmet J. Cankut, Noorshida Mohd Ali, et al. "Sensitisation of Eu(iii)- and Tb(iii)-based luminescence by Ir(iii) units in Ir/lanthanide dyads: evidence for parallel energy-transfer and electron-transfer based mechanisms." Dalton Trans. 43, no. 17 (2014): 6414–28. http://dx.doi.org/10.1039/c4dt00292j.

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Shmelev, A. G., E. O. Mityushkin, L. A. Nurtdinova, et al. "NaYbF<sub>4</sub>:Er luminescence anisotropy in a large ensemble and single nanoparticles." Известия Российской академии наук. Серия физическая 87, no. 12 (2023): 1744–48. http://dx.doi.org/10.31857/s0367676523703003.

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The upconversion NaYbF4:Er nanorods were synthesized by the hydrothermal method at the temperature of 190°C for 24 h. The luminescence spectrum exhibits intense luminescence lines in the visible and near-IR ranges under 977 nm laser diode excitation. The polarization of the upconversion luminescence of a large ensemble of nanoparticles is isotropic. Considering the pronounced rod structure of nanoparticles, the presence of several subensembles with different polarization characteristics of the luminescence was assumed.

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Li, B., G. R. Roberts, A. Brumm, et al. "IRSL dating of fast-fading sanidine feldspars from Sulawesi, Indonesia." Ancient TL 34, no. 2 (2016): 1–13. https://doi.org/10.26034/la.atl.2016.503.

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The volcanic origin of the sediments from Sulawesi, Indonesia, provides a particular challenge for luminescence dating due to the dim optically stimulated luminescence (OSL) from quartz, and the high anomalous fading rate in the infrared (IR) stimulated luminescence (IRSL) from feldspars. In this study, we present results of dating the sanidine feldspars from 2 samples taken from an archaeological site (Leang Bulu Bettue) in the Maros karsts of South Sulawesi. We tested the post-IR IRSL (pIRIR) procedures in order to find a stable luminescence signal that is less affected by anomalous fading.

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Mittelstraß, Dirk, and Sebastian Kreutzer. "Spatially resolved infrared radiofluorescence: single-grain K-feldspar dating using CCD imaging." Geochronology 3, no. 1 (2021): 299–319. http://dx.doi.org/10.5194/gchron-3-299-2021.

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Abstract. The success of luminescence dating as a chronological tool in Quaternary science builds upon innovative methodological approaches, providing new insights into past landscapes. Infrared radiofluorescence (IR-RF) on K-feldspar is such an innovative method that was already introduced two decades ago. IR-RF promises considerable extended temporal range and a simple measurement protocol, with more dating applications being published recently. To date, all applications have used multi-grain measurements. Herein, we take the next step by enabling IR-RF measurements on a single grain level.

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Sterenberg, Brian T., Christian T. Wrigley, and Richard J. Puddephatt. "Binuclear platinum–iridium complexes: synthesis, reactivity and luminescence." Dalton Transactions 44, no. 12 (2015): 5555–68. http://dx.doi.org/10.1039/c4dt03966a.

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Hong, A.-Ra, Joon Soo Han, Gumin Kang, Hyungduk Ko, and Ho Seong Jang. "Bright Blue, Green, and Red Luminescence from Dye-Sensitized Core@Shell Upconversion Nanophosphors under 800 nm Near-Infrared Light." Materials 13, no. 23 (2020): 5338. http://dx.doi.org/10.3390/ma13235338.

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In this study, Li-based blue- and green-emitting core@shell (C@S) upconversion nanophosphors (UCNPs) and NaGdF4-based red-emitting C@S UCNPs were synthesized, and IR-808 dyes were conjugated with the C@S UCNPs to enhance upconversion (UC) luminescence. The surface of the as-synthesized C@S UCNPs, which was originally capped with oleic acid, was modified with BF4− to conjugate the IR-808 dye having a carboxyl functional group to the surface of the UCNPs. After the conjugation with IR-808 dyes, absorbance of the UCNPs was significantly increased. As a result, dye-sensitized blue (B)-, green (G)-

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44

Tai, Xi Shi. "Synthesis, Spectral and Luminescence Properties of Complexes Europium with N-benzenesulphonyl-L-phenylalanine and 1,10-Phenanthroline." Advanced Materials Research 322 (August 2011): 318–21. http://dx.doi.org/10.4028/www.scientific.net/amr.322.318.

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The complexes of europium with N-benzenesulphonyl-L-phenylalanine (complex 1), N-benzenesulphonyl-L-phenylalanine and phenanthroline (complex 2) were synthesized and characterized by IR spectroscopy, UV and molar conductivity. The luminescence spectra of two europium complexes were investigated in solid and in DMSO solution, respectively. The results show that complex 1 exhibits low luminescence emission and complex 2 exhibits high luminescence emission in red region. And phenanthroline could enhance the luminescence intensity of europium complexes.

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Mirochnik, Anatolii, Natalia Petrochenkova, Alexander Shishov, Tatiana Emelina, Alexander Sergeev, and Andrei Leonov. "Optical Amines and Ammonia Sensors Based on Europium(III) Luminescent Complexes." Solid State Phenomena 245 (October 2015): 204–10. http://dx.doi.org/10.4028/www.scientific.net/ssp.245.204.

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The effect of amines and ammonia vapour on luminescence of Eu (III) complexes immobilized in different matrices has been investigated. It has been revealed that interaction of Eu (III) tris-dibenzoylmethanate with analyte vapour results in the increase of the intensity of Eu (III) luminescence. The mechanism of the effect of ammonia and amines vapours on intensification of the Eu (III) luminescence has been suggested using the data of IR, luminescence spectroscopy and quantum chemistry calculations.

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46

Moskvitina, E. A., V. A. Vorobiev, and B. M. Bolotin. "Study of Luminescent Properties of CaNb2O6:Yb, Er, Tm." Herald of the Bauman Moscow State Technical University. Series Natural Sciences, no. 3 (90) (June 2020): 78–87. http://dx.doi.org/10.18698/1812-3368-2020-3-78-87.

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We used solid phase synthesis at 1200 °C to create a luminophore based on CaNb2O6 and activated by ytterbium, erbium, and thulium ions. We present X-ray phase analysis results for the CaNb2O6:Yb, Er, Tm compound. The X-ray diffraction patterns obtained do not contain reflexes belonging to the intermediate phases. We investigated spectral properties of a calcium niobate-based luminophore upon excitation by a 940 nm laser. There are bands in the visible and IR regions to be found in the luminescence spectra. The up-conversion (anti-Stokes emission) luminescence spectrum comprises three bands pea

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47

Kalmbach, Jens, Cui Wang, Yi You, et al. "Near‐IR to Near‐IR Upconversion Luminescence in Molecular Chromium Ytterbium Salts." Angewandte Chemie International Edition 59, no. 42 (2020): 18804–8. http://dx.doi.org/10.1002/anie.202007200.

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48

Zander, A., and A. Hilgers. "Testing the potential of OSL, TT-OSL, IRSL and post-IR IRSL luminescence dating on a Middle Pleistocene sediment record of Lake El'gygytgyn, Russia." Climate of the Past Discussions 8, no. 5 (2012): 4779–815. http://dx.doi.org/10.5194/cpd-8-4779-2012.

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Abstract. Lake El'gygytgyn is a 12 km wide crater lake located in remote Chukotka in the far East Russian Arctic about 100 km to the north of the Arctic Circle. It was formed by a meteorite impact about 3.58 Ma ago. This study tests the paleomagnetic and proxy data-based Mid- to Late-Pleistocene sediment deposition history using novel luminescence dating techniques of sediment cores taken from the centre of the 175 m deep lake. For dating polymineral and quartz fine grains (4–11 μm grain size range) were extracted from nine different levels from the upper 28 m of sediment cores 5011-1A and 501

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Zinchenko, Viktor, Oleg Ieriomin, Valerii Antonovich, et al. "SPECTROSCOPIC PROPERTIES OF SOLIDIFIED MELTS OF THE EuF3-CeF3-NaCl-KCl SYSTEM." Ukrainian Chemistry Journal 86, no. 10 (2020): 120–28. http://dx.doi.org/10.33609/2708-129x.86.10.2020.120-128.

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The nature of the interaction in the EuF3-CeF3 system in the process of high-temperature (1050 °C) oxidation - reduction reaction was established by the methods of IR transmission spectroscopy, diffuse reflection spectroscopy and fluorescence spectroscopy. Here is a significant bathochromic shift to 480-485 nm band of blue luminescence of Eu(II) - containing phases, due to the 5d–4f electronic transitions, as well as the manifestation of orange-red luminescence of Eu(III) - containing phases due to 4f–4f electronic transitions in the range of 590–690 nm. There is a bathochromic shift of the IR

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50

Hyppänen, Iko, Jorma Hölsä, Jouko Kankare, Mika Lastusaari, and Laura Pihlgren. "Upconversion Properties of Nanocrystalline ZrO2:Yb3+, Er3+Phosphors." Journal of Nanomaterials 2007 (2007): 1–8. http://dx.doi.org/10.1155/2007/16391.

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Combustion and sol-gel methods were used to prepare the upconverting nanocrystallineZrO2:Yb3+,Er3+phosphors. The crystal structure was studied by X-ray powder diffraction and the crystallite sizes were estimated with the Scherrer formula. Impurities and nanomaterials' thermal degradation were analyzed with FT-IR spectroscopy and thermal analysis, respectively. Upconversion luminescence and luminescence decays were studied with IR-laser excitation at 977 nm. All nanomaterials possessed the cubicZrO2fluorite-type structure except for a small monoclinic impurity obtained with the sol-gel method.

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