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Journal articles on the topic 'Particule phosphorescente'

Author: Grafiati

Published: 7 July 2024

Last updated: 31 July 2025

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1

Laskowska, Magdalena, Anna Nowak, Mateusz Dulski, Peter Weigl, Thomas Blochowicz, and Łukasz Laskowski. "Spherical Silica Functionalized by 2-Naphthalene Methanol Luminophores as a Phosphorescence Sensor." International Journal of Molecular Sciences 22, no. 24 (2021): 13289. http://dx.doi.org/10.3390/ijms222413289.

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Photoluminescence is known to have huge potential for applications in studying biological systems. In that respect, phosphorescent dye molecules open the possibility to study the local slow solvent dynamics close to hard and soft surfaces and interfaces using the triplet state (TSD: triplet state solvation dynamics). However, for that purpose, probe molecules with efficient phosphorescence features are required with a fixed location on the surface. In this article, a potential TSD probe is presented in the form of a nanocomposite: we synthesize spherical silica particles with 2-naphthalene met

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Malpicci, Daniele, Daniele Maver, Elisabetta Rosadoni та ін. "3-Ethynyltriimidazo[1,2-a:1′,2′-c:1″,2″-e][1,3,5]triazine Dual Short- and Long-Lived Emissions with Crystallization-Enhanced Feature: Role of Hydrogen Bonds and π-π Interactions". Molecules 29, № 9 (2024): 1967. http://dx.doi.org/10.3390/molecules29091967.

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Organic room temperature phosphorescent (ORTP) materials with stimuli-responsive, multicomponent emissive behaviour are extremely desirable for various applications. The derivative of cyclic triimidazole (TT) functionalized with an ethynyl group, TT-CCH, is isolated and investigated. The compound possesses crystallization-enhanced emission (CEE) comprising dual fluorescence and dual phosphorescence of both molecular and supramolecular origin with aggregation-induced components highly sensitive to grinding. The mechanisms involved in the emissions have been disclosed thanks to combined structur

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Liu, Zhenping, Xianfeng Wang, Jingzhou Hou, Danqun Huo, and Changjun Hou. "A Simple and Rapid Phosphorescence Probe Based on Mn-Doped ZnS Quantum Dots for Chloramphenicol Detection." Nano 14, no. 11 (2019): 1950144. http://dx.doi.org/10.1142/s1793292019501443.

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An innovative phosphorescence probe based on Mn-doped ZnS quantum dots (Mn:ZnS QDs) was developed for selective detection of chloramphenicol (CAP) via inner-filter effect (IFE). Mn:ZnS QDs were synthesized by water method and modified with L-Cysteine for better stability, and the average diameter of the nanometer particle was 3.8[Formula: see text]nm. With the excitation wavelength at 289[Formula: see text]nm, the strong phosphorescence of Mn:ZnS QDs can be emitted at 583[Formula: see text]nm. The excitation spectrum of Mn:ZnS QDs was substantially overlapped with the absorption spectrum of th

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4

Kemp, L., Elizabeth C. Jamieson, and S. J. Gaskin. "Phosphorescent tracer particles for Lagrangian flow measurement and particle tracking velocimetry." Experiments in Fluids 48, no. 5 (2010): 927–31. http://dx.doi.org/10.1007/s00348-009-0818-z.

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5

Phuc, Dang Huu, and Vu Tri-Vien. "Surface coated red phosphors with silica nanoparticles and silica nanocomposites: performance modifications." TELKOMNIKA (Telecommunication, Computing, Electronics and Control) 20, no. 6 (2022): 1350–56. https://doi.org/10.12928/telkomnika.v20i6.24084.

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Surface coverings using nanomaterials of silica nanoparticles and poly (methyl methacrylate) – abbreviated “PMMA-silica nanomaterials” – are introduced to the Y<sub>2</sub>O<sub>2</sub>S:Eu<sup>3+</sup> phosphor through four distinct approaches. The objective is to enhance Y<sub>2</sub>O<sub>2</sub>S:Eu<sup>3+</sup> phosphorescence and prolonged sustainability. Using immerse-daubing along with sol-gel approach (Stober way), it is possible to have Y<sub>2</sub>O<sub>2</sub>S:Eu<sup>3+</sup> phosphors covered with relatively-monodisperse nano-silica particl

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Diel, Waldemar, Dustin Büttner, Klaus Krüger, and Beat Zobrist. "Digital Printing of Phosphorescent Particles." NIP & Digital Fabrication Conference 27, no. 1 (2011): 466–69. http://dx.doi.org/10.2352/issn.2169-4451.2011.27.1.art00013_2.

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7

Wattanasirikoson, R., P. Boonyaras, and K. Dangudom. "Exploring phosphorescent materials: luminescence properties and traffic safety applications." Journal of Physics: Conference Series 2934, no. 1 (2025): 012026. https://doi.org/10.1088/1742-6596/2934/1/012026.

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Abstract This research investigates the luminescence of phosphorescent materials by measuring the particle size of phosphorescent powder from images obtained using scanning electron microscopy and chemically analyzing the composition using Energy Dispersive X-Ray Spectroscopy. It was found that the chemical composition correlates with the phosphorescent material group SrAl2O4. The emitted light is green when examining the luminescence spectrum of the phosphorescent powder, revealing a peak wavelength of 523 nanometers. This was then applied to the design of a pyramid-shaped phosphorescent traf

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8

Winnik, Mitchell A., Onder Pekcan та M. D. Croucher. "Phosphorescence of naphthalene-labelled colloidal polymer particles. The α-methyl relaxation of one microphase in a multicomponent material". Canadian Journal of Chemistry 63, № 1 (1985): 129–33. http://dx.doi.org/10.1139/v85-021.

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Nonaqueous dispersions of poly(methyl methacrylate) (PMMA) particles, sterically stabilized with polyisobutylene (PIB), were prepared with naphthalene (N) groups covalently incorporated into the PMMA chains. These materials have a complex morphology of phase-separated PMMA and PIB microdomains, with the N groups in the PMMA microphases. The phosphorescence intensity and decay times of the N groups were measured as a function of temperature over the range 77–295 K for dispersions in methylcyclohexane and for freeze-dried powder samples. An Arrhenius treatment of the radiationlcss decay rate sho

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9

KATOH, Akira, Tomomi HATANAKA, Eri TAKEUCHI, Masaki UCHIDA, and Hideshi NATSUME. "Calibration of infrared video-oculography by using bioadhesive phosphorescent particles for accurate measurement of vestibulo-ocular reflex in mice." Journal of Advanced Science 27, no. 3+4 (2015): 11–16. http://dx.doi.org/10.2978/jsas.27.11.

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10

Rojas-Hernandez, R. E., F. Rubio-Marcos, E. Enríquez, M. A. De La Rubia, and J. F. Fernandez. "A low-energy milling approach to reduce particle size maintains the luminescence of strontium aluminates." RSC Advances 5, no. 53 (2015): 42559–67. http://dx.doi.org/10.1039/c5ra04878h.

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11

Purdy, Barbara B., and Robert J. Hurtubise. "Changes in the Photophysical Properties with Heavy Atoms and the Effects of Modulus for 4-Phenylphenol in Solid-Matrix Luminescence." Applied Spectroscopy 46, no. 6 (1992): 988–93. http://dx.doi.org/10.1366/0003702924124367.

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Fluorescence and phosphorescence quantum yields and fluorescence and phosphorescence lifetimes were obtained for 4-phenylphenol adsorbed on filter paper with either NaCl, NaBr, or Nal at 296 and 93 K. From these data several photophysical parameters were calculated and compared. In general, the photophysical data showed that the heavy-atom effect was operative, with NaI showing the greatest effect. However, NaBr at 93 K showed both the heavy-atom effect and another effect which was particular to NaBr. For 4-phenylphenol with NaI, very little increase occurred for the phosphorescence quantum yi

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12

Mahltig, Boris, Clara Heil, Sarah Kaub, and Jaydip Nareshbhai Kapadiya. "The use of phosphorescence micromaterials for commercial textile products." Communications in Development and Assembling of Textile Products 5, no. 1 (2024): 1–10. http://dx.doi.org/10.25367/cdatp.2024.5.p1-10.

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    Fluorescent textile products are manifold used. Compared to fluorescent textiles, phosphorescent textile products exhibit an afterglow effect even after the illumination is stopped. Phosphorescent textiles are less present as commercial products on the market. With this background the aim of the actual presentation is to investigate the properties of commercially available phosphorescent textile materials. Investigations are performed by illumination under different light arrangement. Microscopy is performed by scanning electronic microscopy (SEM) and advanced light

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13

Choi, Geun Su, Byunghyun Kang, Jinnil Choi, Byeong-Kwon Ju, and Young Wook Park. "Reduced Efficiency Roll-Off in Phosphorescent Organic Light-Emitting Diodes with a Double Dopant." Journal of Nanoscience and Nanotechnology 20, no. 11 (2020): 6679–82. http://dx.doi.org/10.1166/jnn.2020.18770.

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The phenomenon by which the efficiency decreases rapidly with the increase in luminance or current density in organic light-emitting diodes is termed efficiency roll-off. In particular, phosphorescent organic light-emitting diodes are known to have higher efficiency, but tend to exhibit higher efficiency roll-off compared with fluorescent organic light-emitting diodes. In this study, we report the efficiency roll-off characteristics of double-dopant phosphorescent organic light-emitting diodes. The double-dopant phosphorescent organic light-emitting diodes showed significantly lower efficiency

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14

Sperling, R. A., and W. J. Parak. "Surface modification, functionalization and bioconjugation of colloidal inorganic nanoparticles." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 368, no. 1915 (2010): 1333–83. http://dx.doi.org/10.1098/rsta.2009.0273.

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Inorganic colloidal nanoparticles are very small, nanoscale objects with inorganic cores that are dispersed in a solvent. Depending on the material they consist of, nanoparticles can possess a number of different properties such as high electron density and strong optical absorption (e.g. metal particles, in particular Au), photoluminescence in the form of fluorescence (semiconductor quantum dots, e.g. CdSe or CdTe) or phosphorescence (doped oxide materials, e.g. Y 2 O 3 ), or magnetic moment (e.g. iron oxide or cobalt nanoparticles). Prerequisite for every possible application is the proper s

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15

Yashchuk, V. M., I. V. Lebedyeva та O. M. Navozenko. "Manifestations of triplet electronic excitations migration in π-electron containing polymers". Bulletin of Taras Shevchenko National University of Kyiv. Series: Physics and Mathematics, № 1 (2019): 242–45. http://dx.doi.org/10.17721/1812-5409.2019/1.55.

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The results of spectral studies of polymers with aromatic side groups are considered and analyzed. In particular, the phosphorescence spectra of polyvinylcarbazole (PVCa) polyvinyl-7-benzocarbazole (PV7BK) polypropylcarbazole (PEPC) are presented and analyzed. The phosphorescence of these polymers has been shown to be related to the migration of triplet excitons in macromolecules. The phosphorescence of PVC is determined at 77by deep traps (oxides), at 4.2 -shallow traps (monomer units of PVCa). The spreading length of triplet excitons in PVCa macromolecules is 600 A – that corresponds to the

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16

Bradley, Melanie, Muthupandian Ashokkumar, and Franz Grieser. "Sonochemical Production of Fluorescent and Phosphorescent Latex Particles." Journal of the American Chemical Society 125, no. 2 (2003): 525–29. http://dx.doi.org/10.1021/ja0268581.

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17

Mao, Meng-Xi, Fang-Ling Li, Yan Shen, et al. "Simple Synthesis of Red Iridium(III) Complexes with Sulfur-Contained Four-Membered Ancillary Ligands for OLEDs." Molecules 26, no. 9 (2021): 2599. http://dx.doi.org/10.3390/molecules26092599.

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Phosphorescent iridium(III) complexes have been widely researched for the fabrication of efficient organic light-emitting diodes (OLEDs). In this work, three red Ir(III) complexes named Ir-1, Ir-2, and Ir-3, with Ir-S-C-S four-membered framework rings, were synthesized efficiently at room temperature within 5 min using sulfur-containing ancillary ligands with electron-donating groups of 9,10-dihydro-9,9-dimethylacridine, phenoxazine, and phenothiazine, respectively. Due to the same main ligand of 4-(4-(trifluoromethyl)phenyl)quinazoline, all Ir(III) complexes showed similar photoluminescence e

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18

Wang, Huiyong, Hongmei Yu, Ayman AL-Zubi, et al. "Self-Matrix N-Doped Room Temperature Phosphorescent Carbon Dots Triggered by Visible and Ultraviolet Light Dual Modes." Nanomaterials 12, no. 13 (2022): 2210. http://dx.doi.org/10.3390/nano12132210.

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The synthesis of room temperature phosphorescent carbon dots (RTP-CDs) without any matrix is important in various applications. In particular, RTP-CDs with dual modes of excitation are more interesting. Here, we successfully synthesized matrix-free carbonized polymer dots (CPDs) that can generate green RTP under visible and ultraviolet light dual-mode excitation. Using acrylic acid (AA) and ammonium oxalate as precursors, a simple one-pot hydrothermal method was selected to prepare AA-CPDs. Here, acrylic acid is easy to polymerize under high temperature and high pressure, which makes AA-CPDs f

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19

Louge, Michel Y., Subramanyam A. Iyer, Emmanuel P. Giannelis, D. Jeffrey Lischer, and Hongder Chang. "Optical fiber measurements of particle velocity using laser-induced phosphorescence." Applied Optics 30, no. 15 (1991): 1976. http://dx.doi.org/10.1364/ao.30.001976.

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20

Villa, Marco, Simone D’Agostino, Piera Sabatino, et al. "Pentasulfurated benzene-cored asterisks: relationship between crystal structure and luminescence properties." New Journal of Chemistry 44, no. 8 (2020): 3249–54. http://dx.doi.org/10.1039/c9nj05905a.

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21

Breunig, Hans Georg, and Karsten König. "High-Resolution Phosphorescence Lifetime Imaging (PLIM) of Bones." Applied Sciences 12, no. 3 (2022): 1066. http://dx.doi.org/10.3390/app12031066.

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For the first time, the time-resolved two-photon excited autophosphorescence of non-labeled biological specimens was investigated by phosphoresce lifetime imaging with microscopic spatial resolution. A modified multiphoton tomograph was employed to record both photoluminescence contributions, autofluorescence and autophosphorescence, simultaneously, induced by two-photon excitation using an 80 MHz near infrared femtosecond-pulse-laser scanning beam, an acousto-optic modulator, and a time-correlated single-photon counting module for lifetime measurements from the picosecond to the microsecond r

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22

Adadurov, A. F., P. N. Zhmurin, V. N. Lebedev та V. V. Kovalenko. "Plastic scintillator with phosphorescent dopants for α-particles registration". Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 621, № 1-3 (2010): 354–57. http://dx.doi.org/10.1016/j.nima.2010.04.055.

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23

Kim, Doory. "Recent Developments in Lanthanide-Doped Alkaline Earth Aluminate Phosphors with Enhanced and Long-Persistent Luminescence." Nanomaterials 11, no. 3 (2021): 723. http://dx.doi.org/10.3390/nano11030723.

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Lanthanide-activated alkaline earth aluminate phosphors are excellent luminescent materials that are designed to overcome the limitations of conventional sulfide-based phosphors. The increasing research attention on these phosphors over the past decade has led to a drastic improvement in their phosphorescence efficiencies and resulted in a wide variety of phosphorescence colors, which can facilitate applications in various areas. This review article discusses the development of lanthanide-activated alkaline earth aluminate phosphors with a focus on the various synthesis methods, persistent lum

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24

Chelushkin, Pavel S., Julia R. Shakirova, Ilya S. Kritchenkov, Vadim A. Baigildin, and Sergey P. Tunik. "Phosphorescent NIR emitters for biomedicine: applications, advances and challenges." Dalton Transactions 51, no. 4 (2022): 1257–80. http://dx.doi.org/10.1039/d1dt03077a.

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This review describes the current state of the art in the chemistry of phosphorescent NIR emitters with a particular focus on their application in biomedicine as luminescent probes, sensors and theranostic agents.

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25

Lin, Meijuan, Caiping Luo, Guang Xing, Longjie Chen, and Qidan Ling. "Influence of polyhedral oligomeric silsesquioxanes (POSS) on the luminescence properties of non-conjugated copolymers based on iridium complex and carbazole units." RSC Advances 7, no. 63 (2017): 39512–22. http://dx.doi.org/10.1039/c7ra07316j.

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The non-conjugated copolymers with the carrier-transporting carbazole units, phosphorescence iridium complex units and nano-scale particles POSS were synthesized. The effects of POSS on the performance of copolymer hybrid materials were investigated.

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26

Duan, Xiaoxia, Lixin Yi, Xiqing Zhang, and Shihua Huang. "Size-Dependent Optical Properties of Nanoscale and Bulk Long Persistent Phosphor SrAl2O4:Eu2+, Dy3+." Journal of Nanomaterials 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/298692.

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Nanoscale long persistent phosphor SrAl2O4:Eu2+, Dy3+was prepared by autocombustion of citrate gel. The energy level shift of activator Eu2+and coactivator Dy3+was analyzed according to the emission and the excitation spectra. The band gap change of SrAl2O4and the resulting trap depth change with particle size were discussed on the basis of analyzing the visible spectra, the vacuum ultraviolet (VUV) excitation spectra, and the thermoluminescence (TL) spectra. The fluorescence quenching and the shallow traps originating from surface adsorption or surface defects explain the weak initial persist

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27

Kim, Hyungsoo, Eric S. Daniels, Shang Li, Vijaya K. Mokkapati, and Keith Kardos. "Polymer encapsulation of yttrium oxysulfide phosphorescent particles via miniemulsion polymerization." Journal of Polymer Science Part A: Polymer Chemistry 45, no. 6 (2007): 1038–54. http://dx.doi.org/10.1002/pola.21860.

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28

Shen, Yong, Yunfei Xia, Ping Li, et al. "Microwave-Assisted Synthesis of Room Temperature Long Persistent Luminescent Materials and Their Imaging Applications." Crystals 13, no. 4 (2023): 705. http://dx.doi.org/10.3390/cryst13040705.

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In this study, we utilized a simple and efficient microwave heating method with polyethyleneimine (PEI) and phosphate as raw materials to synthesize room temperature persistent luminescence (RTPL) materials that emit phosphorescent light for up to 10 s. Our investigation revealed that the optimal synthesis conditions were a microwave radiation power of 560 W and a heating time of 5 min. The synthesized RTPL materials had an average particle size of 2 nm and exhibited excellent RTPL performance, with optimal excitation and emission wavelengths of 360 nm and 544 nm, respectively. Additionally, t

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29

Song, Xuedong, Lei Huang, and Bin Wu. "Bright and Monodispersed Phosphorescent Particles and Their Applications for Biological Assays." Analytical Chemistry 80, no. 14 (2008): 5501–7. http://dx.doi.org/10.1021/ac800483n.

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30

Wei, Wei, Jie Ma, Jonas Schaab, et al. "A Comparison between Triphenylmethyl and Triphenylsilyl Spirobifluorenyl Hosts: Synthesis, Photophysics and Performance in Phosphorescent Organic Light-Emitting Diodes." Molecules 28, no. 13 (2023): 5241. http://dx.doi.org/10.3390/molecules28135241.

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This study presents the synthesis and characterization of two spirobifluorenyl derivatives substituted with either triphenylmethyl (SB-C) or triphenylsilyl (SB-Si) moieties for use as host materials in phosphorescent organic light-emitting diodes (PHOLED). Both molecules have similar high triplet energies and large energy gaps. Blue Ir(tpz)3 and green Ir(ppy)3 phosphorescent devices were fabricated using these materials as hosts. Surprisingly, SB-Si demonstrated superior charge-transporting ability compared to SB-C, despite having similar energies for their valence orbitals. In particular, SB-

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31

Díaz-García, M. E., B. Noval Gutiérrez, and R. Badía. "Tailoring room-temperature phosphorescent ormosil particles for oxygen recognition in organic solvents." Sensors and Actuators B: Chemical 110, no. 1 (2005): 66–72. http://dx.doi.org/10.1016/j.snb.2005.01.022.

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32

Taguchi, Yoshinari, Daisuke Ito, Natsukaze Saito, Isao Kimura, and Masato Tanaka. "Preparation and characterization of microcapsules containing particulate phosphorescent agent with suspension polymerization." Polymers for Advanced Technologies 28, no. 3 (2016): 379–85. http://dx.doi.org/10.1002/pat.3899.

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33

Koshida, Nobuyoshi, Toshiyuki Ohta, Yoshiyuki Hirano, Romain Mentek, and Bernard Gelloz. "Functional Device Applications of Nanosilicon." Key Engineering Materials 470 (February 2011): 20–26. http://dx.doi.org/10.4028/www.scientific.net/kem.470.20.

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The particular physical functions of quantum-sized silicon have been investigated, along with exploration of their potential device applications. A strong confinement effect fully modifies the original optical, electrical, and thermal properties of bulk silicon. A discussion regarding their control and applications is presented, which addresses blue phosphorescence, enhanced photoconduction, operation of a ballistic electron emitter in solutions, and digital drive of a thermo-acoustic sound emitter.

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34

Karacaoglu, Erkul, Faruk Ozel, Sabriye Acikgoz, et al. "Investigation of Atomic Layer Deposition Post-Coating Properties of Phosphorescent SrAl₂O₄: Eu²⁺, Dy³⁺ Fibers Produced By Electrospinning." ECS Meeting Abstracts MA2022-02, no. 51 (2022): 1974. http://dx.doi.org/10.1149/ma2022-02511974mtgabs.

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In this research, phosphorescent SrAl2O4:Eu2+, Dy3+ fibers were produced by electrospinning and coated with atomic layer deposition (ALD) technique to enhance the photoluminescence (PL) properties, and water & thermal resistance. Particle form of Eu2+-activated strontium aluminate phosphors possess many remarkable features that have been reported over and over, for example, nontoxic, stable, efficient. PL enhancement and stability in water of these particles were provided by nano encapsulation process by ALD that has just been published in our previous paper. In this study, for the first t

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35

Kaya, S. Yesilay, E. Karacaoglu, and B. Karasu. "Particle size influence of starting batches on phosphorescence behaviour of Sr4Al14O25based bluish green phosphors." Advances in Applied Ceramics 111, no. 7 (2012): 393–97. http://dx.doi.org/10.1179/1743676112y.0000000005.

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36

Previtali, Andrea, Elena Lucenti, Alessandra Forni, et al. "Solid State Room Temperature Dual Phosphorescence from 3-(2-Fluoropyridin-4-yl)triimidazo[1,2-a:1′,2′-c:1″,2″-e][1,3,5]triazine." Molecules 24, no. 14 (2019): 2552. http://dx.doi.org/10.3390/molecules24142552.

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Organic room temperature persistent luminescence is a fascinating but still largely unexplored phenomenon. Cyclic-triimidazole and its halogenated (Br, I) derivatives have recently revealed as intriguing phosphors characterized by multifaceted emissive behavior including room temperature ultralong phosphorescence (RTUP) associated with the presence of H-aggregates in their crystal structure. Here, we move towards a multicomponent system by incorporating a fluoropyridinic fragment on the cyclic-triimidazole scaffold. Such chromophore enhances the molecular properties resulting in a high photolu

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Kolpaczynska, Milena, Christopher A. DeRosa, William A. Morris та Cassandra L. Fraser. "Thienyl Difluoroboron β-Diketonates in Solution and Polylactide Media". Australian Journal of Chemistry 69, № 5 (2016): 537. http://dx.doi.org/10.1071/ch15750.

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Difluoroboron β-diketonates (BF2bdks) have impressive optical properties in both solution and the solid state. In particular, both fluorescence and room-temperature phosphorescence are present when the dyes are confined to a rigid matrix, such as poly(lactic acid) (PLA). To expand the current knowledge and colour range capabilities of this unique type of multi-emitting chromophore, a series of thienyl-substituted BF2bdk complexes have been synthesized. The photophysical properties were investigated in dichloromethane solution and in the solid state as dye/PLA blends. By varying donor ability,

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38

Deponte, H., W. Augustin, and S. Scholl. "Development of a quantification method for fouling deposits using phosphorescence." Heat and Mass Transfer 57, no. 10 (2021): 1661–70. http://dx.doi.org/10.1007/s00231-021-03053-6.

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AbstractParticulate fouling on structured surfaces is typically quantified using the integral thermal or mass-based fouling resistance. The observed geometries may be structures that can improve the heat transfer in heat exchangers (e.g., dimples), cavities in components, or more complex geometries. However, due to limited accessibility or the requirement for a locally resolved measurement, the existing quantification methods may not be applicable to structured surfaces. For this reason, a new method is needed for the quantification for fouling deposits. In this study, dimpled surfaces were ev

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Cebrián, Cristina, and Matteo Mauro. "Recent advances in phosphorescent platinum complexes for organic light-emitting diodes." Beilstein Journal of Organic Chemistry 14 (June 18, 2018): 1459–81. http://dx.doi.org/10.3762/bjoc.14.124.

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Phosphorescent organometallic compounds based on heavy transition metal complexes (TMCs) are an appealing research topic of enormous current interest. Amongst all different fields in which they found valuable application, development of emitting materials based on TMCs have become crucial for electroluminescent devices such as phosphorescent organic light-emitting diodes (PhOLEDs) and light-emitting electrochemical cells (LEECs). This interest is driven by the fact that luminescent TMCs with long-lived excited state lifetimes are able to efficiently harvest both singlet and triplet electro-gen

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Longoni, Margherita, Serena Francone, Maddalena Boscacci, et al. "Special-Effect and Conventional Pigments in Black Light Art: A Multi-Technique Approach to an In-Situ Investigation." Materials 15, no. 19 (2022): 6671. http://dx.doi.org/10.3390/ma15196671.

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Since their introduction in the early decades of the 20th century, fluorescent pigments have found progressively wider applications in several fields. Their chemical composition has been optimized to obtain the best physical properties, but is not usually disclosed by the manufacturers. Even the other class of luminescent pigments, namely the phosphorescent ones, is now produced industrially. The peculiar optical properties of these pigments have attracted more and more the attention of famous artists since the middle of the last century. The Italian Black Light Art movement exploits the possi

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Werner, Till, Mareike Schmidt, Bastian J. M. Etzold, Anna Fritschen, Andreas Blaeser, and Jeanette Hussong. "Characterization of 3D oxygen concentrations in microfluidic systems combining astigmatic particle tracking with phosphorescence decay measurements." Proceedings of the International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics 21 (July 8, 2024): 1–14. http://dx.doi.org/10.55037/lxlaser.21st.157.

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In this work, we combine astigmatic particle tracking with phosphorescence decay measurements to determine 3D-resolved oxygen concentration in microfluidic systems. In our experiments we achieve uncertainties in the out-of-plane position of less than 1 µm and uncertainties in oxygen concentration of less than 2 ppm. The calibrated measurement range covers oxygen concentrations of 0.6 ppm to 27.6 ppm. A method is presented to correct for measurement errors caused by photobleaching. For this, the excitation energy, the cumulative exposure time and the spatially varying intensity profile of the l

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Dědic, R., A. Svoboda, J. Psŕenĕk, L. Lupínková, J. Komenda, and J. Hála. "Time and spectral resolved phosphorescence of singlet oxygen and pigments in photosystem II particles." Journal of Luminescence 102-103 (May 2003): 313–17. http://dx.doi.org/10.1016/s0022-2313(02)00524-0.

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Leone, G., R. Ragni, D. Vona, S. R. Cicco, F. Babudri, and G. M. Farinola. "A phosphorescent iridium complex as a probe for diatom cells’ viability." MRS Advances 5, no. 18-19 (2020): 935–41. http://dx.doi.org/10.1557/adv.2020.18.

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ABSTRACTDiatoms are unicellular photosynthetic algae that autonomously fabricate a porous organized biosilica shell refined in billion years of evolution. They represent an inexhaustible source of low cost, biocompatible mesoporous silica. Despite the major advances in the genomic field, studies on diatom cell biology are still hampered by a lack of cellular tools. In particular, cell staining assays of diatoms viability are still limited or not well performant. Here we provide a phosphorescent organometallic iridium complex (Ir-Fcx) suitable to act as staining agent to detect diatoms viabilit

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Bartwal, K. S., B. K. Singh, and H. Ryu. "Preparation of CaAl₂O₄: Eu²⁺ Long Persistent Blue Phosphor." Advanced Materials Research 26-28 (October 2007): 573–76. http://dx.doi.org/10.4028/www.scientific.net/amr.26-28.573.

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CaAl2O4:Eu2+ with high brightness and long persistent luminescence were prepared by solid state reaction method. The phosphor compositions with varying Eu2+ were investigated by powder X-ray diffractometer (XRD), SEM, TEM, photoluminescence excitation and emission spectra. Broad band UV excited luminescence of the CaAl2O4:Eu2+ was observed in the blue region (λmax = 440 nm) due to transitions from the 4f65d1 to the 4f7 configuration of the Eu2+ ion. The particle size also plays a role deciding the luminescence characteristics of these phosphors. The decay time of the persistence indicated that

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Shin, Dae Yong, and Kyung Nam Kim. "Effects of Eu²⁺, Dy³⁺ Contents and Particle Sizes on the Luminescent Properties of SrAl₂O₄ Phosphor by the Sol-Gel Process." Materials Science Forum 620-622 (April 2009): 473–76. http://dx.doi.org/10.4028/www.scientific.net/msf.620-622.473.

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A green emitting SrAl2O4:Eu2+, Dy3+ phosphor with high brightness and long afterglow was synthesized by the sol-gel method. SrAl2O4: Eu2+, Dy3+ phosphor exhibited broad band extending from 450 to 650 nm and maximum emission spectra peaking at 520 nm. Three excited levels existed, two shoulders were observed at 270 and 330 nm in addition to the maximum at 360 nm on the excitation spectrum. After the removal of excitation light, the excellent after-glow characteristic of the phosphorescence was obtained as a result of low decay time, although the after-glow intensities of phosphor varied exponen

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SOLAINI, Giancarlo, Alessandra BARACCA, Edi GABELLIERI, and Giorgio LENAZ. "Modification of the mitochondrial F1-ATPase ∊ subunit, enhancement of the ATPase activity of the IF1–F1 complex and IF1-binding dependence of the conformation of the ∊ subunit." Biochemical Journal 327, no. 2 (1997): 443–48. http://dx.doi.org/10.1042/bj3270443.

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Treatment of bovine heart submitochondrial particles with a low concentration of 2-hydroxy-5-nitrobenzyl bromide (HNB), a selective reagent for the Trp residue of the ε subunit [Baracca, Barogi, Lenaz and Solaini (1993) Int. J. Biochem. 25, 1269-1275], enhances the ATP hydrolytic activity of the particles exclusively when the natural inhibitor protein IF1 is present. Similarly, isolated F1 [the catalytic sector of the mitochondrial H+-ATPase complex (ATP synthase)] treated with the reagent has the ATPase activity enhanced exclusively if IF1 is bound to it. These experiments suggest that the mo

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Kaya, Selvin Yesilay, Bekir Karasu, Guray Kaya, and Erkul Karacaoğlu. "Influences of Eu²⁺ and Dy³⁺ Contents on the Properties of Long Afterglow Strontium Aluminate Phosphors." Advances in Science and Technology 62 (October 2010): 88–94. http://dx.doi.org/10.4028/www.scientific.net/ast.62.88.

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The detailed preparation process of Eu2+ and Dy3+ ion co-doped phosphor powders in Sr4Al14O25:Eu2+/Dy3+ phosphor system with bluish-green long afterglow produced by solid state reaction method under reducing atmosphere is here reported. X-ray diffraction (XRD), scanning electron microscopy (SEM), and particle size analysis were made to assign the effects of Eu and Dy ions on the luminescent properties of the synthesized phosphors, which were determined by measuring the photoluminescence spectra. The maximum emission intensity of these phosphors under excitation was investigated. As a result, t

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Cho, Min Young, Suman Timilsina, Jong Wook Roh, et al. "Ultraviolet Light-Responsive Photorheological Fluid for Sensors and Actuators Realized by Phosphorescence Effects and LSTM RNN." Korean Journal of Metals and Materials 59, no. 5 (2021): 346–53. http://dx.doi.org/10.3365/kjmm.2021.59.5.346.

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A photo-rheological fluid (PRF) is a smart fluid which exhibits different viscosity under UV irradiation. A PRF is comprehensively presented in this work, with particular focus on its responses under UV off/on conditions. The isomeric conversion from SP to MC and vice versa under UV off and on, respectively, showed unequal rates of transformation. As a result, a complex non-linear hysteretic response was observed. To be used indifferent types of sensors and actuators which can exploit its rheological properties, it is essential the PRF have linearized hysteresis behavior. To minimize the asymm

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Karpyuk, P. V., L. V. Ermakova, V. V. Dubov, et al. "Effect of Phosphorus-Containing Dispersant on the Microstructure and Optical Properties of Scintillation Ceramic (Gd, Y)3(Al, Ga)5O12:Ce with Garnet Structure." Poverhnostʹ. Rentgenovskie, sinhrotronnye i nejtronnye issledovaniâ, no. 8 (December 25, 2024): 123–32. https://doi.org/10.31857/s1028096024080156.

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Phosphoric acid ester, a typical component of commercial dispersants, affects the functional properties of Gd1.494Y1.494Ce0.012Al2Ga3O12 ceramics. In sintered ceramics, the residual phosphorus can reach up to 40–70% of the introduced amount. The admixture of phosphorus located on the surfaces of the particles activates the grain growth during sintering and leads to the formation of secondary phases of rare-earth phosphates. With increasing phosphorus concentration, the density and optical transmittance of ceramics decrease. Relatively small amount of phosphorus can improve the luminescence pro

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Murata, Junji, and Masaya Kagawa. "Photo-Assisted Chemical Mechanical Polishing of Si Wafer Using Phosphorescent Particles as a Luminescent Agent." ECS Journal of Solid State Science and Technology 8, no. 11 (2019): P727—P733. http://dx.doi.org/10.1149/2.0161911jss.

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