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Journal articles on the topic 'Luminescence quenching'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 March 2023

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1

Beltyukova, S. V., and O. V. Malinka. "Determination of platyphylline hydrotartrate by luminescence quenching of the complex yttrium (iii) with rutin." Farmatsevtychnyi zhurnal, no. 3-4 (September 4, 2018): 30–37. http://dx.doi.org/10.32352/0367-3057.3-4.18.05.

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Drugs used in the form of salts of organic bases are often determined by the anionic portion of these salts. Thus, titrimetric, spectrophotometric, electrochemical, chromatographic and luminescent methods of analysis are proposed for the determination of various tartrate-ion preparations. The purpose of this study was to develop a method of luminescent determination of platyphylline hydrotartrate in dosage forms using a luminescent probe-yttrium complex (III) with rutin (Rut). The luminescent determination of platyphylline hydrotartrate is offered to use a complex of yttrium (III)–

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2

Zhang, Ning, and Shiqing Man. "Luminescent Properties of a Novel Mn²⁺ doped 3CaO-CaF₂-2SiO₂ Glasses." Journal of Physics: Conference Series 2076, no. 1 (2021): 012048. http://dx.doi.org/10.1088/1742-6596/2076/1/012048.

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Abstract The transition metal Mn2+ ions doped materials have been widely reported for the luminescent properties for its broad emission band from green to red due to the spin-forbidden 4T1→6A1 transitions. To investigate the luminescent properties of Mn2+ ions in cuspidine glass, the 3CaO-CaF2-2SiO2 glasses doped with different Mn2+ concentration were prepared with traditional melt-quenching method. The luminescence emission spectra, excitation spectra and luminescence decay curves were recorded and analyzed. The tunable broadband emission from orange to red was obtained. The luminescence inte

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3

Sami, Hussain, Osama Younis, Yui Maruoka, et al. "Negative Thermal Quenching of Photoluminescence from Liquid-Crystalline Molecules in Condensed Phases." Crystals 11, no. 12 (2021): 1555. http://dx.doi.org/10.3390/cryst11121555.

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The luminescence of materials in condensed phases is affected by not only their molecular structures but also their aggregated structures. In this study, we designed new liquid-crystalline luminescent materials based on biphenylacetylene with a bulky trimethylsilyl terminal group and a flexible alkoxy chain. The luminescence properties of the prepared materials were evaluated, with a particular focus on the effects of phase transitions, which cause changes in the aggregated structures. The length of the flexible chain had no effect on the luminescence in solution. However, in crystals, the lum

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4

Wang, Li Hua. "Research on the Effect of Mg (II) Ion Concentration on the Luminescent Intensity of Tb Complex." Advanced Materials Research 321 (August 2011): 100–103. http://dx.doi.org/10.4028/www.scientific.net/amr.321.100.

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The effect of different concentrations of Mg (II) ion on luminescent intensity of Tb (III) complex material in ethanol, methanol and DMSO solutions has been studied. The results show that the quenching effect of organic solvents for the luminescence of Tb (III) complex material was in the order DMSO>methanol>ethanol. The Mg (II) ion of different concentrations has obvious quenching effect to luminescent emission of Tb (III) complex material in organic solvent. And the quenching effect of 0.2 mol/L Mg (II) ion is weakest. And the quenching effect of 0.8 mol/L Mg (II) ions is strongest.

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5

Hamaguchi, H., T. Tahara, and M. Tasumi. "Suppression of Luminescence Background in Raman Spectroscopy by Means of Transient Optical Depletion of Causal Impurity Molecules." Applied Spectroscopy 41, no. 8 (1987): 1265–68. http://dx.doi.org/10.1366/0003702874447202.

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A simple but highly efficient method of luminescence quenching in Raman spectroscopy is proposed—made on the basis of a newly recognized phenomenon which is ascribable to the optical depletion of luminescent impurity molecules by pulsed-laser excitation. The method has been applied to two typical biological samples: a DNA tetramer (AATT; adenine-adenine-thymine-thymine) and a protein (calmodulin). Suppression of luminescence background by factors of 10–100 was achieved by changing the mode of excitation from cw to pulsed. A model calculation based on semiquantitative estimation of photoexcitat

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6

Zhao, Xiao-Lin, Dan Tian, Qiang Gao, Hong-Wei Sun, Jian Xu, and Xian-He Bu. "A chiral lanthanide metal–organic framework for selective sensing of Fe(iii) ions." Dalton Transactions 45, no. 3 (2016): 1040–46. http://dx.doi.org/10.1039/c5dt03283k.

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A new luminescent lanthanide metal–organic framework was successfully synthesized, featuring rare 1D chiral helical channels and a highly selective luminescence quenching response to Fe<sup>3+</sup> ions.

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7

Bilger, W., and U. Schreiber. "Modulation of Millisecond Chlorophyll Luminescence by Non-Photochemical Fluorescence Quenching." Zeitschrift für Naturforschung C 44, no. 11-12 (1989): 966–70. http://dx.doi.org/10.1515/znc-1989-11-1215.

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Abstract By combining a high frequency modulation system for measurement of fluorescence with a phosphoroscope type apparatus for measurement of luminescence, recordings of fluorescence and luminescence induction kinetics under identical conditions were obtained. Both measuring systems tolerated the application of saturating pulses of white light for rapid, transient elimination of photochemical quenching at photosystem II reaction centers, thus allowing determination of the non-photochemical quenching component. The saturation pulse induction curves of luminescence are well correlated with t

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8

Meng, Xiang-min, Xia Zhang, Peng-fei Qi, Zi-ao Zong, Fan Jin, and Yu-hua Fan. "Syntheses, structures, luminescent and photocatalytic properties of various polymers based on a “V”-shaped dicarboxylic acid." RSC Advances 7, no. 9 (2017): 4855–71. http://dx.doi.org/10.1039/c6ra27509e.

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Four novel luminescent coordination polymers were synthesized under solvothermal conditions, and compounds2–4can serve as a Fe<sup>3+</sup>/Cu<sup>2+</sup>fluorescent sensor through quenching the luminescence, respectively.

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9

Chi, Fengfeng, Wenjuan Dai, Bin Jiang, et al. "Investigation of the thermal quenching of two emission centers in Sr9MnLi(PO4)7:Eu2+ using time-resolved technique." Physical Chemistry Chemical Physics 22, no. 27 (2020): 15632–39. http://dx.doi.org/10.1039/d0cp02544e.

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10

Wu, Mihye, Hyemin Park, Eun Gyu Lee, Sanghun Lee, Yu Jin Hong, and Sungho Choi. "Luminescence Quenching Behavior of Hydrothermally Grown YVO4:Eu3+ Nanophosphor Excited under Low Temperature and Vacuum Ultra Violet Discharge." Materials 13, no. 15 (2020): 3270. http://dx.doi.org/10.3390/ma13153270.

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The luminescence quenching behavior and energy transfer process in hydrothermally grown Eu3+-doped YVO4 nanophosphors were studied using low temperature photoluminescence spectroscopy. The luminescence efficiency of nanophosphor is dependent on the acidity of its solution media and the post annealing condition after hydrothermal processing. The overall results suggest that the abnormal luminescence behavior of Eu3+-doped nanocrystalline YVO4 under low temperature photoexcitation is due to the incorporated non-radiative hydroxyl groups often encountered in hydrothermal synthesis as well as to t

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11

Hasegawa, Takuya, Kenji Toda, Tadashi Ishigaki, et al. "Luminescence of Phosphor Balls Prepared Using Melt Quenching Synthesis Method." Materials Science Forum 883 (January 2017): 17–21. http://dx.doi.org/10.4028/www.scientific.net/msf.883.17.

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Well-grown M3MgSi2O8(M = Ca, Sr and Ba):Eu2+ phosphors were synthesized by novel melt quenching synthesis method. The luminescence property of the Sr3MgSi2O8:Eu2+ phosphor synthesized by the melt synthesis method is comparable to those of the sample synthesized by a conventional solid state reaction. Sintered phosphor balls with excellent luminescent characteristics were obtained.

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12

Trice, Brian E., and Brian M. Tissue. "Nonlinear Luminescence Quenching in Eu2O3." Spectroscopy Letters 40, no. 2 (2007): 333–48. http://dx.doi.org/10.1080/00387010701247597.

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13

Mays, Holger. "Luminescence Quenching in Microemulsion Studies." Journal of Chemical Education 77, no. 1 (2000): 72. http://dx.doi.org/10.1021/ed077p72.

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14

Ju, Guifang, Yihua Hu, Li Chen, Xiaojuan Wang, and Zhongfei Mu. "Concentration quenching of persistent luminescence." Physica B: Condensed Matter 415 (April 2013): 1–4. http://dx.doi.org/10.1016/j.physb.2013.01.027.

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15

Asami, Kumiko, Tsutomu Naka, and Masakazu Ishiguro. "Luminescence quenching inFcenters under pressure." Physical Review B 34, no. 8 (1986): 5658–64. http://dx.doi.org/10.1103/physrevb.34.5658.

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16

Buckner, Steven W., Robert L. Konold, and Paul A. Jelliss. "Luminescence quenching in PbS nanoparticles." Chemical Physics Letters 394, no. 4-6 (2004): 400–404. http://dx.doi.org/10.1016/j.cplett.2004.06.138.

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17

Rigo, M. Veronica, and Peter Geissinger. "Crossed Optical Fiber Sensor Arrays for High-Spatial-Resolution Sensing: Application to Dissolved Oxygen Concentration Measurements." Journal of Sensors 2012 (2012): 1–10. http://dx.doi.org/10.1155/2012/464092.

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Optical fiber sensors using luminescent probes located along an optical fiber in the cladding of this fiber are of great interest for monitoring physical and chemical properties in their environment. The interrogation of a luminophore with a short laser pulse propagating through the fiber core allows for the measurement of the location of these luminophores. To increase the spatial resolution of such a measurements and to measure multiple analytes and properties in a confined space, a crossed optical fiber sensing platform can be employed. Here we describe the application of this platform to m

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18

Mironenko, Alexander Y., Alexander A. Sergeev, Alexander E. Nazirov, Andrei A. Leonov, Svetlana Y. Bratskaya, and Sergey S. Voznesenskiy. "Sensitive Coatings for Luminescence Detection of Cu(II) in Solutions." Solid State Phenomena 245 (October 2015): 243–46. http://dx.doi.org/10.4028/www.scientific.net/ssp.245.243.

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Here we present a simple technique for copper (II) detection in aqueous solutions by luminescent dye doped polymeric film. In this study the photoluminescent dye lumocupferon was first embedded in thin films of polysaccharide chitosan. The sensor response is forming by quenching the dye luminescence. This technique can offer a rapid detection of Cu2+ with a dynamic range up to 350 μM.

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19

Rood, Marcus T. M., Maria Oikonomou, Tessa Buckle, et al. "An activatable, polarity dependent, dual-luminescent imaging agent with a long luminescence lifetime." Chem. Commun. 50, no. 68 (2014): 9733–36. http://dx.doi.org/10.1039/c4cc04015e.

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A combination of two quenching interactions was incorporated in a new activatable imaging agent. Partial and total activation of luminescence can be achieved, as well as luminescence lifetime imaging.

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20

Knyazev, Andrey A., Aleksandr S. Krupin, and Yuriy G. Galyametdinov. "Composites Based on Polylactide Doped with Amorphous Europium(III) Complex as Perspective Thermosensitive Luminescent Materials." Inorganics 10, no. 12 (2022): 232. http://dx.doi.org/10.3390/inorganics10120232.

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This work reports fabrication of polylactide (PLA) films doped with various additives of an amorphous Eu(III) complex. We study the temperature behavior of the luminescence intensity and lifetime of the PLA-Eu(III) composites in the range of 298–353 K and investigate the mechanism of luminescence temperature quenching. The peak relative sensitivity of the films reaches 20.1 %×K−1 and exceeds the respective characteristics of all known lanthanide-containing thermosensors designed for the range of physiological temperatures. The produced films can be potential novel materials for luminescent the

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21

Buzanov, Oleg A., Nina S. Kozlova, Nikita A. Siminel, and Evgeniya V. Zabelina. "Luminescence in lanthanum-gallium tantalate." Modern Electronic Materials 4, no. 3 (2018): 97–101. http://dx.doi.org/10.3897/j.moem.4.3.39454.

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The optical and luminescent properties of undoped La3Ga5.5Ta0.5O14 lanthanum- gallium tantalate crystals grown in different atmospheres of pure argon gas and argon gas with different oxygen percentages have been studied. The optical absorption α(λ) spectra that characterize integral absorption and reflection have been measured in the 250–700 nm region. The spectral absorption functions have been calculated from the measured α(λ) spectra using the Kubelka–Munk formula. Luminescence has been observed in all the test specimens over a wide spectral region (375 to 650 nm) at 95 and 300 K. The lumin

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22

Beltramini, M., G. M. Giacometti, B. Salvato, G. Giacometti, K. Münger, and K. Lerch. "Luminescence emission from Neurospora copper metallothionein. Time-resolved studies." Biochemical Journal 260, no. 1 (1989): 189–93. http://dx.doi.org/10.1042/bj2600189.

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The luminescence lifetime of Cu-metallothionein from the fungus Neurospora crassa has been studied by the frequency-domain emission technique. Lifetimes of 10.3 and 3.4 microseconds have been found for the protein in the absence and in the presence of oxygen respectively. Binding of Hg(II) results in a quenching of the luminescence correlated to the shortening of lifetime to 0.3-0.4 microsecond. No quenching by oxygen is found for the Hg(II)-Cu-metallothionein adduct. By analogy to model compounds, luminescence emission is attributed to a triplet excited state of a Cu(I)-to-sulphur charge-tran

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23

Tiyabhorn, Acharee, and K. Omar Zahir. "Quantum yield of singlet dioxygen and elucidation of the quenching mechanism for the reaction between the doublet excited states of tris(bipyridine)chromium(III) and triplet dioxygen." Canadian Journal of Chemistry 74, no. 3 (1996): 336–40. http://dx.doi.org/10.1139/v96-037.

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The formation of singlet dioxygen (1O2) in the reaction between the doublet excited states of tris(bipyridine)chromium(III) and triplet dioxygen in deuterium oxide was detected using near-infrared luminescence corresponding to singlet dioxygen decay. In addition, luminescence intensity measurements were used to determine the quantum yield of singlet dioxygen produced. A value of 0.86 ± 0.08 was obtained for the yield of 1O2. Based on these quantum yield measurements, it is proposed that the major quenching mode is energy transfer quenching. However, considering that the 1O2 yield is less than

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24

Guo, Junjie, Tuerxun Aidilibike, Weihua Di, Yangyang Li, Xiaohui Liu, and Weiping Qin. "Quenching cooperative transitions by destroying Yb3+-clusters." Physical Chemistry Chemical Physics 19, no. 20 (2017): 12637–41. http://dx.doi.org/10.1039/c7cp01678f.

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In our previous study, we have reported the cooperative luminescence of Yb<sup>3+</sup>-trimers and cooperatively sensitized Gd<sup>3+</sup> luminescence by Yb<sup>3+</sup>-tetramers in a doped CaF<sub>2</sub> host.

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25

Rachuri, Yadagiri, Bhavesh Parmar, Kamal Kumar Bisht, and Eringathodi Suresh. "Solvothermal self-assembly of Cd2+ coordination polymers with supramolecular networks involving N-donor ligands and aromatic dicarboxylates: synthesis, crystal structure and photoluminescence studies." Dalton Transactions 46, no. 11 (2017): 3623–30. http://dx.doi.org/10.1039/c7dt00042a.

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26

Zinchenko, V., G. Nechyporenko, and L. Koshkina. "Interaction Between PbF2 and EuS in Saline Melt NaCl-KCl." Фізика і хімія твердого тіла 17, no. 3 (2016): 396–400. http://dx.doi.org/10.15330/pcss.17.3.396-400.

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Ability to interaction between PbF2 and EuS in NaCl-KCl saline melt is established by methods of luminescent spectroscopy and the X-ray diffraction analysis. Mutual quenching of intensive blue luminescence of Eu2+ and, partially, of yellow luminescence of PbF2 in the solidified solutions-melts on the basis of NaCl-KCl is observed, that confirms exchange reaction with formation of PbS particles. Formation of abnormal phases "NaCl" and "KCl" with the changed parameters of lattices, and also of PbFCl phase is revealed, and also possibility of occurring phases of PbS, β - PbF2 and NaF in separate

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27

Kurshanov, D. A., I. A. Arefina, M. S. Stepanova, A. Dubavik, and A. V. Baranov. "Effect of Fe-=SUB=-3-=/SUB=-O-=SUB=-4-=/SUB=- nanoparticle concentration on the luminescence of AgInS-=SUB=-2-=/SUB=-/ZnS in hybrid complex CaCO-=SUB=-3-=/SUB=--Fe-=SUB=-3-=/SUB=-O-=SUB=-4-=/SUB=-@AgInS-=SUB=-2-=/SUB=-/ZnS-=SUP=-*-=/SUP=-." Оптика и спектроскопия 129, no. 11 (2021): 1424. http://dx.doi.org/10.21883/os.2021.11.51649.1418-21.

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In this paper, we studied the properties of a multifunctional system, in which the luminescent and magnetic properties are combined. The calcium carbonate microspheres are used as porous matrices for complexes combining luminescence properties of AgInS2/ZnS quantum dots and magnetic properties of Fe3O4 nanoparticles. The study investigates the effect of magnetic nanoparticles concentration on optical properties of quantum dots in CaCO3-Fe3O4@AgInS2/ZnS complexes. It is shown that applying calcium carbonate microspheres as a matrix permits to reduce quenching of the quantum dots luminescence. K

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28

He, Ming, Z. H. Zhang, Y. Z. Zhu, Y. G. Tang, and Z. Song. "Luminescent properties of Eu3+-doped SmBa3B9O18." Powder Diffraction 28, S1 (2013): S41—S44. http://dx.doi.org/10.1017/s0885715613000468.

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Eu3+-doped SmBa3B9O18 luminescent materials were synthesized by high temperature solid state reactions. The structure and photoluminescence properties of Sm(1−x)EuxBa3B9O18 (x = 0.2, 0.4, and 0.6) were investigated by X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy, and photoluminescence spectra. The results show that doping of Eu3+ ions does not change the structure of SmBa3B9O18. The luminescence is mainly the characteristic Eu3+ ion luminescence. No concentration quenching processes occur with the increment of Eu3+ concentration. The work implies that S

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29

Kurshanov D.A., Arefina I. A., Stepanova M. S., Dubavik A., and Baranov A. V. "Effect of Fe-=SUB=-3-=/SUB=-O-=SUB=-4-=/SUB=- nanoparticle concentration on the luminescence of AgInS-=SUB=-2-=/SUB=-/ZnS in hybrid complex CaCO-=SUB=-3-=/SUB=--Fe-=SUB=-3-=/SUB=-O-=SUB=-4-=/SUB=-@AgInS-=SUB=-2-=/SUB=-/ZnS." Optics and Spectroscopy 130, no. 14 (2022): 2134. http://dx.doi.org/10.21883/eos.2022.14.53999.1418-21.

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In this paper, we studied the properties of a multifunctional system, in which the luminescent and magnetic properties are combined. The calcium carbonate microspheres are used as porous matrices for complexes combining luminescence properties of AgInS2/ZnS quantum dots and magnetic properties of Fe3O4 nanoparticles. The study investigates the effect of magnetic nanoparticles concentration on optical properties of quantum dots in CaCO3-Fe3O4@AgInS2/ZnS complexes. It is shown that applying calcium carbonate microspheres as a matrix permits to reduce quenching of the quantum dots luminescence. K

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30

Shishov A. S. and Mirochnik A. G. "Luminescent chemosensor for detecting dimethylamine and ammonia vapors." Optics and Spectroscopy 132, no. 2 (2022): 279. http://dx.doi.org/10.21883/eos.2022.02.53222.2644-21.

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The interaction of tris-dibenzoylmethanate Eu(III) with dimethylamine and ammonia vapors was investigated. It was found that when vapors of aqueous solutions of analytes are exposed to tris-dibenzoylmethanate Eu(III) impregnated into the SiO2 matrix, an optical response is observed in the form of an increase in the luminescence intensity of Eu(III). Changes in the luminescence spectra and luminescence excitation of this sensor are analyzed, both under the quenching action of water vapor and under the sensitizing action of analyte vapors. The main points recorded in the excitation spectra are n

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31

Przhevuski, A. K., and N. V. Nikonorov. "Nonlinear luminescence quenching in erbium glasses." Journal of Optical Technology 67, no. 4 (2000): 327. http://dx.doi.org/10.1364/jot.67.000327.

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32

Targowski, P., B. Ziętek, and A. Bączyński. "Luminescence Quenching of Rhodamines by Cyclooctatetraene." Zeitschrift für Naturforschung A 42, no. 9 (1987): 1009–13. http://dx.doi.org/10.1515/zna-1987-0914.

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Cyclooctatetraene (COT) as a quencher of fluorescence of a series of Rhodamine solutions was studied. The second order rate constants for the quenching process of Rhodamine 110, Rhodamine 19 pchl., Rhodamine 6G pchl., Rhodamine 6G, Tetramethylrhodamine, Rhodamine B and Rhodamine 3B pchl. are given. It was found that COT enhances rather intersystem crossing than internal conversion.

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33

Stoessel, M., G. Wittmann, J. Staudigel, et al. "Cathode-induced luminescence quenching in polyfluorenes." Journal of Applied Physics 87, no. 9 (2000): 4467–75. http://dx.doi.org/10.1063/1.373093.

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34

Mikhelashvili, M. S., and A. M. Mikhaeli. "Nonlinear luminescence quenching in restricted geometries." Journal of Physical Chemistry 96, no. 12 (1992): 4766–68. http://dx.doi.org/10.1021/j100191a010.

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35

Carraway, E. R., J. N. Demas, and B. A. DeGraff. "Luminescence quenching mechanism for microheterogeneous systems." Analytical Chemistry 63, no. 4 (1991): 332–36. http://dx.doi.org/10.1021/ac00004a006.

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36

Ayling, S. G., and J. W. Allen. "Auger quenching of luminescence in ZnSe:Mn." Journal of Physics C: Solid State Physics 20, no. 26 (1987): 4251–57. http://dx.doi.org/10.1088/0022-3719/20/26/025.

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37

Basieva, I. T., and T. T. Basiev. "Static cooperative luminescence quenching in nanoparticles." Journal of Luminescence 151 (July 2014): 88–92. http://dx.doi.org/10.1016/j.jlumin.2014.02.005.

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38

Haft, Dirk, Richard J. Warburton, Khaled Karrai, et al. "Luminescence quenching in InAs quantum dots." Applied Physics Letters 78, no. 19 (2001): 2946–48. http://dx.doi.org/10.1063/1.1356445.

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39

Yan, M., L. J. Rothberg, F. Papadimitrakopoulos, M. E. Galvin, and T. M. Miller. "Defect Quenching of Conjugated Polymer Luminescence." Physical Review Letters 73, no. 5 (1994): 744–47. http://dx.doi.org/10.1103/physrevlett.73.744.

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40

Koepke, Cz, A. Lempicki, and A. J. Wojtowicz. "Luminescence Quenching of Strongly Coupled Systems." physica status solidi (b) 179, no. 1 (1993): 233–40. http://dx.doi.org/10.1002/pssb.2221790125.

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41

Birowosuto, M. D., P. Dorenbos, J. T. M. de Haas, C. W. E. van Eijk, K. W. Krämer, and H. U. Güdel. "Optical spectroscopy and luminescence quenching of." Journal of Luminescence 118, no. 2 (2006): 308–16. http://dx.doi.org/10.1016/j.jlumin.2005.09.001.

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42

Tang, Wanjuan, Qingfeng Guo, Ke Su, et al. "Structure and Photoluminescence Properties of Dy3+ Doped Phosphor with Whitlockite Structure." Materials 15, no. 6 (2022): 2177. http://dx.doi.org/10.3390/ma15062177.

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Whitlockite has the advantages of a low sintering temperature, high stability, and a low fabrication cost, and it is widely used as the host for luminescent material. In this study, Ca1.8Li0.6La0.6−x(PO4)2:xDy3+ phosphor was prepared by the high-temperature solid-state method, and its structure, composition, and luminescence properties were systematically studied. The results showed that a new whitlockite type matrix was prepared by replacing Ca2+ in whitlockite with monovalent and trivalent cations. The prepared phosphors belonged to a hexagonal crystal system with a particle size in the rang

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43

Sergeev, Alexander A., Ksenia A. Sergeeva, Andrei A. Leonov, Irina V. Postnova, Sergey S. Voznesenskiy, and Yuriy Nikolaevich Kulchin. "Manganese-Doped Zinc Sulfide Quantum Dots for Methane Detection in Aqueous Media." Defect and Diffusion Forum 386 (September 2018): 229–35. http://dx.doi.org/10.4028/www.scientific.net/ddf.386.229.

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A simple aqueous based synthesis technique at room temperature was performed for preparation manganese-doped zinc sulfide quantum dots. Under 4 eV excitation quantum dots show photoluminescence bands at 2.11 and 3.1 eV corresponded to Mn2+and intrinsic ZnS emission respectively. ZnS quantum dots were used as the luminescent sensing element for methane detection in aqueous media. The luminescent sensor response occurs due to photoinduced electron transfer from QDs to methane molecule resulting in QD luminescence quenching.

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44

Kruopyte, Aiste, Raimondas Giraitis, Remigijus Juskenas, David Enseling, Thomas Jüstel, and Arturas Katelnikovas. "Luminescence and luminescence quenching of efficient GdB5O9:Eu3+ red phosphors." Journal of Luminescence 192 (December 2017): 520–26. http://dx.doi.org/10.1016/j.jlumin.2017.07.038.

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45

Yu, Yu'e, Yuhao Wang, Haijun Xu, et al. "Dual-responsive luminescent sensors based on two Cd-MOFs: rare enhancement toward acac and quenching toward Cr2O72−." CrystEngComm 22, no. 22 (2020): 3759–67. http://dx.doi.org/10.1039/d0ce00405g.

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Zhao, Yue, Chang-An Wang, Ji-Kun Li, et al. "A Eu(iii) metal–organic framework based on anthracenyl and alkynyl conjugation as a fluorescence probe for the selective monitoring of Fe³⁺ and TNP." RSC Advances 12, no. 41 (2022): 26945–52. http://dx.doi.org/10.1039/d2ra02892a.

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Полисадова, Е. Ф., В. А. Ваганов, Д. Т. Валиев та ін. "Влияние температуры на люминесцентные свойства керамики MgAl-=SUB=-2-=/SUB=-O-=SUB=-4-=/SUB=- : Dy, синтезированной методом искрового плазменного спекания". Физика твердого тела 61, № 10 (2019): 1873. http://dx.doi.org/10.21883/ftt.2019.10.48263.472.

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MgAl2O4:Dy3+ transparent ceramics were synthesized by Spark Plasma Sintering technique. The optical properties, photo- and cathodoluminescence, and luminescence decay kinetics were studied. The effect of temperature on the spectral and kinetic characteristics of luminescence was investigated. There are several emission bands in emission spectra responsible for Dy3+ ions at 458 (4I15/2 - 5H15/2), 480 nm (4F9/2 - 6H15/2), 573 nm (4F9/2 - 6H13/2), 665 nm (4F9/2 - 6H11/2), 750 nm (4F9/2 - 6H9/2), chromium Cr3+ (2Eg - 4A2g), and internal defects such as F+ centers (460 nm) were observed. The temper

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Шишов, А. С., та А. Г. Мирочник. "Люминесцентный хемосенсор для детектирования паров диметиламина и аммиака". Оптика и спектроскопия 130, № 2 (2022): 300. http://dx.doi.org/10.21883/os.2022.02.51999.2644-21.

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The interaction of tris-dibenzoylmethanate Eu(III) with dimethylamine and ammonia vapors was investigated. It was found that when vapors of aqueous solutions of analytes are exposed to tris-dibenzoylmethanate Eu(III) impregnated into the SiO2 matrix, an optical response is observed in the form of an increase in the luminescence intensity of Eu(III). Changes in the luminescence spectra and luminescence excitation of this sensor are analyzed, both under the quenching action of water vapor and under the sensitizing action of analyte vapors. The main points recorded in the excitation spectra are n

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Kühl, Michael, Lars F. Rickelt, and Roland Thar. "Combined Imaging of Bacteria and Oxygen in Biofilms." Applied and Environmental Microbiology 73, no. 19 (2007): 6289–95. http://dx.doi.org/10.1128/aem.01574-07.

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ABSTRACT Transparent sensors for microscopic O2 imaging were developed by spin coating an ultrathin (<1- to 2-μm) layer of a luminescent O2 indicator onto coverslips. The sensors showed (i) an ideal Stern-Volmer quenching behavior of the luminescence lifetime towards O2 levels, (ii) homogeneous measuring characteristics over the sensor surface, and (iii) a linear decline of luminescence lifetime with increasing temperature. When a batch of such coverslip sensors has been characterized, their use is thus essentially calibration free at a known temperature. The sensors are easy to use in flow

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Li, Chang Fa, and Ji Guang Li. "Uniform Phosphor Spheres of Diverse Emission Colours via Homogeneous Precipitation." Advanced Materials Research 403-408 (November 2011): 1424–27. http://dx.doi.org/10.4028/www.scientific.net/amr.403-408.1424.

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Basic carbonate monospheres of various lanthanide combinations are successfully synthesized by the urea-based homogeneous precipitation technique, which are then converted into well dispersed phosphor particles that emit diverse colours. Sequential precipitation is commonly observed for these mixed cation systems, calling for adequate annealing of the basic carbonate precursors to attain cation homogenization in the final oxide particles and thus better luminescence, through eliminating localized concentration quenching of luminescence. It is shown that, owing to their excellent dispersion and

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