Showing 7,041 - 7,054 results of 7,054 for search '"photoluminescence"', query time: 0.13s Refine Results
  1. 7041

    2,1,3-Benzoselenadiazole as Mono- and Bidentate N-Donor for Heteroleptic Cu(I) Complexes: Synthesis, Characterization and Photophysical Properties by Valentina Ferraro, Fabian Hoffmann, Olaf Fuhr, Burkhard Luy, Stefan Bräse

    Published 2024-07-01
    “…The lifetimes comprised between 121 and 159 μs support the involvement of triplet excited states in the emission process. The photoluminescent properties of [Cu(BSeD)(PPh<sub>3</sub>)<sub>2</sub>(ClO<sub>4</sub>)] were supported by TDDFT computations, and the emission was predicted at 710 nm and ascribed to a metal-to-ligand charge transfer (<sup>3</sup>MLCT) process, in agreement with the experimental data.…”
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  2. 7042
  3. 7043

    Green and sustainable tapioca-derived carbon dots immobilised on screen printed electrode for detection of heavy metals using electrochemical method by Pudza, Musa Yahaya

    Published 2020
    “…Herein, CDs were synthesized from tapioca by a hydrothermal process based on Photoluminescent quantum yield (PLQY). Variables such as temperature, dosage, time, and amount of solvent were explored. …”
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    Thesis
  4. 7044

    Preparation of Glass-Ceramic Materials by Controlled Crystallization of Eu<sub>2</sub>O<sub>3</sub>-Doped WO<sub>3</sub>-B<sub>2</sub>O<sub>3</sub>-La<sub>2</sub>O<sub>3</sub> Glas... by Aneliya Yordanova, Margarita Milanova, Lyubomir Aleksandrov, Reni Iordanova, Peter Tzvetkov, Pavel Markov, Petia Petrova

    Published 2025-02-01
    “…By XRD and TEM analysis, crystallization of β-La<sub>2</sub>W<sub>2</sub>O<sub>9</sub> and La<sub>2</sub>WO<sub>6</sub> crystalline phases has been proved. Photoluminescent spectra showed increased emission in the resulting glass-ceramic samples compared to the parent glass sample due to higher asymmetry of Eu<sup>3+</sup> ions in the obtained crystalline phases, where the active Eu<sup>3+</sup> ions are incorporated. …”
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    Article
  5. 7045

    Structures and Spectroscopy Studies of Two M(II)-Phosphonate Coordination Polymers Based on Alkaline Earth Metals (M = Ba, Mg) by Kui-Rong Ma, Chun-Li Wei, Yu Zhang, Yu-He Kan, Ming-Hui Cong, Xiao-Jing Yang

    Published 2013-01-01
    “…Free metal cations   [MgO6]n2+ and uncoordinated anions (L-H2)n2- are joined together by static electric force. Results of photoluminescent measurement indicate three main emission bands centered at 300 nm, 378.5 nm, and 433 nm for 1 and 302 nm, 378 nm, and 434.5 nm for 2 (λex=235 nm), respectively. …”
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  6. 7046

    Mono- and Mixed Metal Complexes of Eu<sup>3+</sup>, Gd<sup>3+</sup>, and Tb<sup>3+</sup> with a Diketone, Bearing Pyrazole Moiety and CHF<sub>2</sub>-Group: Structure, Color Tuning... by Victoria E. Gontcharenko, Mikhail A. Kiskin, Vladimir D. Dolzhenko, Vladislav M. Korshunov, Ilya V. Taydakov, Yury A. Belousov

    Published 2021-05-01
    “…Three novel lanthanide complexes with the ligand 4,4-difluoro-1-(1,5-dimethyl-1H-pyrazol-4-yl)butane-1,3-dione (HL), namely [LnL<sub>3</sub>(H<sub>2</sub>O)<sub>2</sub>], Ln = Eu, Gd and Tb, were synthesized, and, according to single-crystal X-ray diffraction, are isostructural. The photoluminescent properties of these compounds, as well as of three series of mixed metal complexes [Eu<sub>x</sub>Tb<sub>1-x</sub>L<sub>3</sub>(H<sub>2</sub>O)<sub>2</sub>] (Eu<sub>x</sub>Tb<sub>1-x</sub>L<sub>3</sub>), [EuxGd<sub>1-x</sub>L<sub>3</sub>(H<sub>2</sub>O)<sub>2</sub>] (Eu<sub>x</sub>Gd<sub>1-x</sub>L<sub>3</sub>), and [Gd<sub>x</sub>Tb<sub>1-x</sub>L<sub>3</sub>(H<sub>2</sub>O)<sub>2</sub>] (Gd<sub>x</sub>Tb<sub>1-x</sub>L<sub>3</sub>), were studied. …”
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  7. 7047

    Preparation and Characterization of Developed Cu<sub>x</sub>Sn<sub>1−x</sub>O<sub>2</sub> Nanocomposite and Its Promising Methane Gas Sensing Properties by Nagih M. Shaalan, Dalia Hamad, Abdullah Aljaafari, Atta Y. Abdel-Latief, Mostafa A. Abdel-Rahim

    Published 2019-05-01
    “…The formation of Cu&#8211;SnO<sub>2</sub> or CuO phases at low and high concentrations was also observed by photoluminescent spectra. Here, only the emission peak of SnO<sub>2</sub> with a slight blueshift was recorded at low concentrations, while only the CuO emission peak was recorded at high concentration. …”
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  8. 7048

    Using Principal Component Analysis for Temperature Readings from YF<sub>3</sub>:Pr<sup>3+</sup> Luminescence by Anđela Rajčić, Zoran Ristić, Jovana Periša, Bojana Milićević, Saad Aldawood, Abdullah N. Alodhayb, Željka Antić, Miroslav D. Dramićanin

    Published 2024-08-01
    “…Temperature variations directly impact the photoluminescent spectra, causing a notable increase in the green and deep-red emissions from the <sup>3</sup>P<sub>1</sub> excited state. …”
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  9. 7049

    Nanosized Eu<sup>3+</sup>-Doped NaY<sub>9</sub>Si<sub>6</sub>O<sub>26</sub> Oxyapatite Phosphor: A Comprehensive Insight into Its Hydrothermal Synthesis and Structural, Morphologic... by Madalina Ivanovici, Aleksandar Ćirić, Jovana Periša, Milena Marinović Cincović, Mikhail G. Brik, Abdullah N. Alodhayb, Željka Antić, Miroslav D. Dramićanin

    Published 2024-10-01
    “…Room temperature photoluminescent emission spectra consisted of emission bands in the visible spectral region corresponding to <sup>5</sup>D<sub>0</sub> → <sup>7</sup>F<i><sub>J</sub></i> (<i>J</i> = 0, 1, 2, 3, 4) <i>f-f</i> transitions of Eu<sup>3+</sup>. …”
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  10. 7050

    Tuning of Luminescent and Magnetic Properties via Metal Doping of Zn-BTC Systems by Taoguang Qu, Qiang Wei, Carlos Ordonez, Jennifer Lindline, Michael Petronis, Marina S. Fonari, Tatiana Timofeeva

    Published 2018-04-01
    “…Thermal Gravimetric Analysis (TGA) of these compounds also revealed that all MOFs had similar stability up to ~450 °C. Solid state photoluminescent studies indicated that {Zn-Mn-BTC}{Me2NH2+}, {Zn-Cd-BTC}{Me2NH2+}, and {Zn-Ca-BTC}{Me2NH2+} had a significant red shifting effect compared to the original {Zn-BTC}{Me2NH2+} MOF. …”
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    Article
  11. 7051

    Physical–Chemical Properties of Biogenic Selenium Nanostructures Produced by Stenotrophomonas maltophilia SeITE02 and Ochrobactrum sp. MPV1 by Elena Piacenza, Elena Piacenza, Alessandro Presentato, Emmanuele Ambrosi, Adolfo Speghini, Raymond J. Turner, Giovanni Vallini, Silvia Lampis

    Published 2018-12-01
    “…Finally, the biogenic SeNS extracts were photoluminescent upon excitation ranging from 380 to 530 nm, whose degree of fluorescence emission (λem = 416–640 nm) was comparable to that from chemically synthesized SeNPs with L-cysteine (L-cys SeNPs). …”
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  12. 7052
  13. 7053

    Investigation into multifunctional nanoparticles for the detection, imaging and intervention of amyloid by Xia, Yang

    Published 2019
    “…C-dots are quantum sized (<10 nm) photoluminescent (PL) carbon particles. Bottom-up synthesized C-dots were prepared by hydrothermal pyrolysis of sucrose. …”
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  14. 7054

    Development of luminescent europium-based phosphor films by Chong, Mun Kit

    Published 2010
    “…It has been found that annealing in the rapid thermal processor (RTP) and in vacuum environment is more efficient than that in oxygen and nitrogen atmosphere to eliminate H2O impurities and hence yields the Y2O3:Eu3+ phosphor films with higher photoluminescent (PL) intensity at wavelength of about 613nm (5D0-7F2 emission transition). …”
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    Thesis