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7041
2,1,3-Benzoselenadiazole as Mono- and Bidentate N-Donor for Heteroleptic Cu(I) Complexes: Synthesis, Characterization and Photophysical Properties
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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7042
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7043
Green and sustainable tapioca-derived carbon dots immobilised on screen printed electrode for detection of heavy metals using electrochemical method
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 -
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...
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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7045
Structures and Spectroscopy Studies of Two M(II)-Phosphonate Coordination Polymers Based on Alkaline Earth Metals (M = Ba, Mg)
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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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...
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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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
Published 2019-05-01“…The formation of Cu–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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7048
Using Principal Component Analysis for Temperature Readings from YF<sub>3</sub>:Pr<sup>3+</sup> Luminescence
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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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...
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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7050
Tuning of Luminescent and Magnetic Properties via Metal Doping of Zn-BTC Systems
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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7051
Physical–Chemical Properties of Biogenic Selenium Nanostructures Produced by Stenotrophomonas maltophilia SeITE02 and Ochrobactrum sp. MPV1
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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7052
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7053
Investigation into multifunctional nanoparticles for the detection, imaging and intervention of amyloid
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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Thesis -
7054
Development of luminescent europium-based phosphor films
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