Готові списки джерел за темами / Luminescent property / Статті в журналах
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Статті в журналах з теми "Luminescent property"

Автор: Grafiati
Опубліковано: 13 квітня 2024

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1

Seymour, Linda M., Marco Nicola, Max I. Kessler, et al. "On the production of ancient Egyptian blue: Multi-modal characterization and micron-scale luminescence mapping." PLOS ONE 15, no. 11 (2020): e0242549. http://dx.doi.org/10.1371/journal.pone.0242549.

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Анотація:
The ancient pigment Egyptian blue has long been studied for its historical significance; however, recent work has shown that its unique visible induced luminescent property can be used both to identify the pigment and to inspire new materials with this characteristic. In this study, a multi-modal characterization approach is used to explore variations in ancient production of Egyptian blue from shabti statuettes found in the village of Deir el-Medina in Egypt (Luxor, West Bank) dating back to the New Kingdom (18th-20th Dynasties; about 1550–1077 BCE). Using quantitative SEM-EDS analysis, we identify two possible production groups of the Egyptian blue and demonstrate the presence of multiple phases within samples using cluster analysis and ternary diagram representations. Using both macro-scale non-invasive (X-rays fluorescence and multi-spectral imaging) and micro-sampling (SEM-EDS and Raman confocal microspectroscopy) techniques, we correlate photoluminescence and chemical composition of the ancient samples. We introduce Raman spectroscopic imaging as a means to capture simultaneously visible-induced luminesce and crystal structure and utilize it to identify two classes of luminescing and non-luminescing silicate phases in the pigment that may be connected to production technologies. The results presented here provide a new framework through which Egyptian blue can be studied and inform the design of new materials based on its luminescent property.
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2

Tao, Lei, Kai Lan, Cheng-Long Zhong, et al. "Wavelength-tunable linearly polarized luminescence film constructed using a highly efficient luminescent liquid crystal with stimuli-responsive property." Journal of Materials Chemistry C 8, no. 46 (2020): 16561–68. http://dx.doi.org/10.1039/d0tc04406g.

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3

Fan, Jung Chuan, Huang Huei Sung, and Chun Rong Lin. "The Anomalous Photoluminescence and Thermally Stimulated Luminescence from Carbon Nanotubes." Materials Science Forum 700 (September 2011): 116–19. http://dx.doi.org/10.4028/www.scientific.net/msf.700.116.

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Анотація:
The semiconducting property of carbon nanotubes have been investigated by the luminescence measurement. The morphology of carbon nanotubes has been detected by the scanning electric microscope, and the X ray diffraction determines the atomic structure of carbon nanotubes. The carbon nanotubes can be luminescence under laser irradiation. Using the photoluminescence measurement, the emitting spectrum of carbon naotubes is very spread in a near-red emission range and a main peak at 1.3 eV . The temperature dependent of photoluminescence effect indicates that the semiconducting property of carbon nanotubes is very clearly. According to the thermally photoluminescence experiment, the luminescent property of carbon nanotubes is due to the center of energy trap of defect. It is suggested that the luminescence of the semiconducting property result is dominated by the electron trap of defect in the carbon nanotubes system.
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4

Shi, Weiwei, Lei Liang, Jinping Zhang, et al. "A Versatile Luminescent Ga-Organic Framework with Multi-Emission Centers as a Blue LED and Fluorescent Probe for Low-Temperature Detection and Selective Fe3+ Sensing." Nanomaterials 12, no. 22 (2022): 4009. http://dx.doi.org/10.3390/nano12224009.

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Анотація:
The development and utilization of 3p-block based MOFs as fluorescent materials has attracted significant attention in recent years. Herein, we have successfully constructed a versatile luminescent Ga-MOF (SNNU-63) with a 3d10 configuration and a large ligand twist configuration. Interestingly, the as-synthesized Ga-MOF exhibits excellent luminescence property and a good material for blue light-emitting diode (LED). At 80 K, this Ga-MOF shows multi-emission centers at 381, 462, and 494 nm. As a ratiometric thermometer, this Ga-MOF exhibits an excellent temperature sensing property with high relative sensitivity (Sm = 2.60 % K−1 at 110 K). The fluorescence intensity ratio I381/I494 shows a very good fit for the Boltzmann results (80–240 K). Moreover, the luminescent Ga-MOF exhibits an excellent selective detection of Fe3+ over other metal ions in aqueous an medium, and the limit of detection (LOD) towards Fe3+ ions is calculated to be 1.227 × 10−4 M. This work presents a versatile luminescent Ga-MOF material as a blue LED and fluorescent probe for low-temperature and selective Fe3+ sensing.
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5

Song, Ya, Guo Gong, Jingjing Du, et al. "Synthesis and Inkjet Printing of NaYF4:Ln3+@NaYF4 Core–Shell Nanoparticles with Enhanced Upconversion Fluorescence for Anti-Counterfeiting Applications." Journal of Nanoscience and Nanotechnology 20, no. 3 (2020): 1511–19. http://dx.doi.org/10.1166/jnn.2020.17353.

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Анотація:
Recently, lanthanide-doped upconversion luminescent materials have showed great potential in optical data storage, information encryption and anti-counterfeiting. However, the low upconversion luminescence still limited their applications. In this work, we fabricated RGB NaYF4:Ln3+@NaYF4 core–shell nanoparticles (CSNPs) with enhanced upconversion luminescence by coating an inert NaYF4 shell onto NaYF4:Ln3+ core nanoparticles via thermal decomposition method. The effect of increased shell temperature and addition of shell precursors on crystal phase, morphology and luminescent property of the synthesized CSNPs were systematically investigated. It was demonstrated that high shell growing temperature facilitated the formation of pure β-NaYF4 CSNPs. Upon increasing amount of shell precursors, the morphologies of hexagonal phase NaYF4 CSNPs changed from nanorod to nanocube and showed different luminescent properties. Pure hexagonal phase NaYF4 CSNPs with highest upconversion luminescence of about 15 times higher than NaYF4:Ln3+ core nanoparticles can be prepared at 310 °C with the addition of shell precursors at 3 mmol. Moreover, three-primary-color (RGB) CSNPs with enhanced upconversion luminescence were successfully prepared by changing the doping pair of lanthanide ions in core. The synthesized RGB CSNPs were fabricated into environment friendly luminescent ink by sequential surface modification by PAA ligand and dispersing in mixture solvent of ethanol, water and glycerol. Comparative results showed that the fluorescence enhanced RGB CSNPs inks were more suitable for inkjet printing of multicolored, complex and high resolution luminescent anti-counterfeiting patterns on paper substrates.
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6

Saotome, Satoru, Kazumasa Suenaga, Kazuo Tanaka, and Yoshiki Chujo. "Design for multi-step mechanochromic luminescence property by enhancement of environmental sensitivity in a solid-state emissive boron complex." Materials Chemistry Frontiers 4, no. 6 (2020): 1781–88. http://dx.doi.org/10.1039/c9qm00719a.

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Анотація:
The solid-state emissive boron complex with multi-step mechanochromic luminescence was designed. The crystalline sample showed gradual changes in luminescent color triggered by scratching. The design concept is illustrated.
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7

HAO, WEICHANG, HAIBIN FEN, JUNYING ZHANG, and TIANMIN WANG. "LUMINESCENT PROPERTY OF ZNO GRANULAR FILMS WITH DIFFERENT PARTICLE SIZE." International Journal of Modern Physics B 24, no. 15n16 (2010): 2827–32. http://dx.doi.org/10.1142/s0217979210065702.

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Zinc oxide has received extensive attention for its unique luminescence properties. In this paper, ZnO granular films were prepared on the Si wafer and quartz substrate by Layer-by-Layer electrostatic self-assembly method. The effect of sol concentration on particle size and photoluminescence properties was investigated. SEM images indicate that ZnO particle size increases with sol concentration improving. Absorption edge and photoluminescence peak have a red-shift with particle size increase. The emission peak shift is resulted from particle size effect and the change of oxygen vacancy concentration in surface. The luminescent property of granular film shows big difference with that of ZnO sol. This difference is related to the assembly state of ZnO nanoparticles.
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8

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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9

Li, Zeren. "The Luminescent Property of Magnetic Polymers and Its Influencing Factors." E3S Web of Conferences 213 (2020): 02011. http://dx.doi.org/10.1051/e3sconf/202021302011.

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In this paper, the generation mechanism, influencing factors and application of the luminescent properties of magnetic polymers are reviewed. In practical applications, magnetic polymers exhibit a variety of unique luminescent properties, including photoluminescence, electroluminescence and thermoluminescence. There are many factors affecting the luminescent properties of different kinds of magnetic polymers, including the types of magnetic centers, the properties of metal ions, the charge transfer between metal ions and ligands, and the influence of functional groups on the main and side chains of the polymers. This paper explains the luminescent properties of magnetic polymers from the aspects of generation mechanism and influencing factors.
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10

Xu, Chao Nan, C. Li, Y. Imai, H. Yamada, Y. Adachi, and K. Nishikubo. "Development of Elastico-Luminescent Nanoparticles and their Applications." Advances in Science and Technology 45 (October 2006): 939–44. http://dx.doi.org/10.4028/www.scientific.net/ast.45.939.

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Анотація:
Recently we have proposed that stress distribution of a subject can be visualized by utilizing a novel mechanoluminescence phenomenon that can give intense visible light emission by application of mechanical stress. As the luminescence intensity is proportional to the time-variation of strain energy in the elastic region, we call it elastico-luminescence. In order to realize a high space resolution in such visualization for stress distribution, we aim to develop strong elastico-luminescent nanoparticles, such as a controlled structure of α-SrAl2O4:Eu (monoclinic phase). The processing of the nanoparticles, the property and the applications will be reported in the present work.
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11

DULDA, A., D. S. JO, M. TAKAKI, and D. H. YOON. "MILLING EFFECT AND ENHANCED LUMINESCENCE PROPERTY OF BAM NANOPHOSPHOR VIA SURFACE MODIFICATIONS." Nano 04, no. 06 (2009): 367–70. http://dx.doi.org/10.1142/s1793292009001873.

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Surface modification of luminescent nanomaterials has attracted considerable technological interest. With decreasing particle size, the passivation of surface defects is of vital importance. This paper reports the effect of an alkali (KOH) solution treatment and organic functional groups on the luminescence efficiency and particle dispersibility. Fourier transform infrared spectroscopy provided clear evidence of surface modification with organic functional groups from the C=O , C–H , and C–O stretching modes at 1740, 1365, and 1218 cm-1. The KOH-treated sample showed a 40% increase in luminescence intensity, whereas 87% increase in luminescence intensity was obtained from the dispersion-agent-containing sample. To the best of our knowledge, this is the highest efficiency improvement for sub-micrometer-sized BAM: Eu2+ phosphors reported thus far.
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12

Li, Jian, Li Min Dong, Qin Li, and Zhi Dong Han. "The Luminescence Properties of Green YPO4: Tb3+,Ce3+ Phosphors for WLED." Advanced Materials Research 989-994 (July 2014): 391–94. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.391.

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Анотація:
LED as the fourth generation light source has been extensively studied. In order to get a high-performance White Light Emitting Diode (WLED) green phosphor, YPO4:Ce3+,Tb3+ was prepared by co-precipitation. It was excited at 380nm. The structure, morphology, fluorescence property and colorimetry of the phosphors were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and fluorescence spectrophotometer. Final results show the optimal concentration ratio are 1:0.05:0.01. The crystal grain of luminescent material is 200 nm. When the bath temperature is 80°C and calcined at 1000°C for 3h, the luminescence performance of the luminescent material is excellent.
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13

Kang, Jie, Ai Ling Wang, Yan Rong Qu, Hai Bin Chu, and Yong Liang Zhao. "Preparation and Luminescent Property of EuxYy(TPTZ)2(POA)6 Complexes." Advanced Materials Research 1078 (December 2014): 118–21. http://dx.doi.org/10.4028/www.scientific.net/amr.1078.118.

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Анотація:
Using anion ligand phenoxyacetic acid (HPOA) and neutral ligand 2,4,6-tri(2-pyridyl)-s-triazine (TPTZ), a series of novel europium complexes EuxYy(TPTZ)2(POA)6·6H2O. The luminescence spectra, luminescence lifetimes and emission quantum efficiencies of the complexes were studied. The results show that doping appropriate amount of Y3+ can significantly increase the luminescence intensities, prolong the luminescent lifetime and improve the emission quantum efficiencies.
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14

Yan, Shao Feng, and Kai Ge Miao. "Luminescent Property of Al2O3:Ce3+ Thin Films." Applied Mechanics and Materials 130-134 (October 2011): 23–26. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.23.

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Анотація:
The Al2O3 films doped with Ce3 + were deposited on slides by the medium-frequency reaction magnetron sputtering process, to which the power is constant, Ar flow rate 70 sccm, O2 flow rate 25~45sccm and sputtering time 90min at room temperature. The relationship between the luminescent properties of Al2O3:Ce3 + films and the doped amount of Ce3 + in the films was studied. The presence of Ce3 + and stoichiometry of those films were determined. It was observed that the total luminescence intensity increases and the peak positions are strongly dependent on Ce3+ concentration in the films. The analysis of luminescent excitation spectra showed that the luminance is due to the Ce3+ concentration in the cerium chloride aggregate formed in the films.
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15

Zhou, Yong Qiang, Yi Guang Tian, and He Shan Ying. "Combustion Synthesis of Long Afterglow luminescent Materials Sr2-xCaxMgSi2O7:Eu2+,Dy3+." Advanced Materials Research 287-290 (July 2011): 213–16. http://dx.doi.org/10.4028/www.scientific.net/amr.287-290.213.

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Анотація:
Long afterglow luminescent materials Sr2-xCaxMgSi2O7:Eu2+,Dy3+ （x=0-1.955）was synthesized by combustion method and characterized by X－ray diffraction,fluorescencespectrum and so on. Its preparing process conditions,the effect of Ca2+ replacing Sr2+ on its Luminescent performance were discussed. The results show it has a single phase and foamy structure,which is easy to be grinded into superfine powders. Its Luminescent property is importantly affected by water dosage(R= nH2O /nTEOS), reducer dosage (H=nreducer /nnitrate), gel grain dosage , gel grain size, arousing-burning temperature and burning time. Its best preparing process conditions are determined. A small quantity of Ca2+ replacing Sr2+ can raise its luminescence performance. Increasing Ca2+ content, its emission peak gradually wave to the long wave traverse, its luminous colors change from blue to yellow. Compared with the sample synthesized by high temperature solid reaction,the emission peaks of the sample synthesized by combustion method distinctly take place red shift.
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16

Norrbo, Isabella, Iko Hyppänen, and Mika Lastusaari. "Up-conversion luminescence – A new property in tenebrescent and persistent luminescent hackmanites." Journal of Luminescence 191 (November 2017): 28–34. http://dx.doi.org/10.1016/j.jlumin.2017.02.046.

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17

Qu, Xiao Fei, Fang Lin Du, and Li Xin Cao. "Preparation and Properties of CdSiO3: Mn2+, Er3+ Phosphor." Advanced Materials Research 873 (December 2013): 831–36. http://dx.doi.org/10.4028/www.scientific.net/amr.873.831.

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Анотація:
CdSiO3: Mn2+, Er3+long-lasting phosphor was prepared by the conventional high temperature solid-state method. Effects of the concentration of Mn2+and Er3+on the luminescent properties of phosphor CdSiO3: Mn2+, Er3+were investigated by means of photoluminescence (PL) spectra and the afterglow intensity decay curves. It was found that when the Mn2+and Er3+dopant-concentrations were 0.2 mol% and 0.8 mol% of Cd2+ions in CdSiO3, respectively, the luminescence of phosphor prepared had better luminescent property and longer afterglow time. The phosphorescence for it could be seen with the naked eye for more than 60 min in the dark after the removal of the 254 nm UV light. Role of Er3+co-doped into CdSiO3: Mn2+matrix was discussed in this paper.
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18

Xu, Chao, and Dian Qing Lu. "Photoluminescence and Afterglow Behavior of Eu2+, Dy3+ and Eu2+, Sm3+ in Sr3Al2O6 Matrix." Advanced Materials Research 634-638 (January 2013): 2493–97. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.2493.

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Анотація:
The long afterglow luminescent materials Sr3Al2O6: Eu, Sm and Sr3Al2O6: Eu, Dy (denoted as S1 and S2, respectively) were synthesized via solid-state reaction. X-ray diffraction, fluorescence spectrophotometer and thermal luminescent spectroscope were employed to characterize the phosphors. The excitation spectra are all well simulated by eight Gaussian curves, indicating that they originate from the 4f7(8S7/2)–4f65d(8HJ) transitions of Eu2+. The excitation spectra intensity of S1 is much stronger than that of S2, which indicates that there is a more efficient energy transfers from Sm3+ to Eu2+. The thermally stimulated luminescence (TSL) curve can be fitted to four TSL peaks and the low-temperature TSL peak is responsible for the long lasting phosphorescence. The proposed explanation for the afterglow property is discussed.
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19

Gómez-Morales, Jaime, Raquel Fernández-Penas, Ismael Romero-Castillo, et al. "Crystallization, Luminescence and Cytocompatibility of Hexagonal Calcium Doped Terbium Phosphate Hydrate Nanoparticles." Nanomaterials 11, no. 2 (2021): 322. http://dx.doi.org/10.3390/nano11020322.

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Анотація:
Luminescent lanthanide-containing biocompatible nanosystems represent promising candidates as nanoplatforms for bioimaging applications. Herein, citrate-functionalized calcium-doped terbium phosphate hydrate nanophosphors of the rhabdophane type were prepared at different synthesis times and different Ca2+/Tb3+ ratios by a bioinspired crystallization method consisting of thermal decomplexing of Ca2+/Tb3+/citrate/phosphate/carbonate solutions. Nanoparticles were characterized by XRD, TEM, SEM, HR-TEM, FTIR, Raman, Thermogravimetry, inductively coupled plasma spectroscopy, thermoanalysis, dynamic light scattering, electrophoretic mobility, and fluorescence spectroscopy. They displayed ill-defined isometric morphologies with sizes ≤50 nm, hydration number n ~ 0.9, tailored Ca2+ content (0.42–8.11 wt%), and long luminescent lifetimes (800–2600 µs). Their relative luminescence intensities in solid state are neither affected by Ca2+, citrate content, nor by maturation time for Ca2+ doping concentration in solution below 0.07 M Ca2+. Only at this doping concentration does the maturation time strongly affect this property, decreasing it. In aqueous suspensions, neither pH nor ionic strength nor temperature affect their luminescence properties. All the nanoparticles displayed high cytocompatibility on two human carcinoma cell lines and cell viability correlated positively with the amount of doping Ca2+. Thus, these nanocrystals represent promising new luminescent nanoprobes for potential biomedical applications and, if coupled with targeting and therapeutic moieties, they could be effective tools for theranostics.
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20

CAI, JIANLING, NING HUANG, and YONG ZHANG. "SYNTHESIS OF POLYSTYRENE ENCAPSULATEDZnS-COATEDCdSeNANOCOMPOSITES MODIFIED WITH PLL–PEI–PEG–FA." International Journal of Nanoscience 04, no. 02 (2005): 229–35. http://dx.doi.org/10.1142/s0219581x05003097.

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Анотація:
Current cell tags using dyes lose their luminescence quickly and are not suitable for optical barcoding. Semiconductor quantum dots (QDs), on the other hand, can be engineered to emit different wavelengths, thus permitting tagging of various cells at the same time. Core/shell luminescent quantum dots, cadmium selenide ( CdSe ) and zinc sulphide ( ZnS ), were synthesized and incorporated into polystyrene (PS) particles grafted with carboxyl groups using microemulsion polymerization method. Highly luminescent monodispersed PS particles with diameters from 30 nm to 50 nm were chosen for subsequent surface modification. Two series of surface modifications were carried out with PS particles. One was modified with poly(L-Lysine) (PLL), polyethylenimine (PEI), Poly(Ethylene Glycol) (PEG) and folic acid (FA) side chains in sequence through chemical bonding. Another was conjugated with PEG and FA in sequence. The folic acid side chains can enter target cells via folate receptors and assisted in the uptake of the luminescent particles into the cells. This property allows them to be used as fluorescent labels for marking their ingress into cells and also for a cornucopia of biomedical applications.
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21

Zhang, Ying Jie, Li Xian Sun, and Fen Xu. "Synthesis, Crystal Structure and Luminescence Property on Cabazoly-Based Zinc Metal Organic Frameworks." Key Engineering Materials 727 (January 2017): 628–34. http://dx.doi.org/10.4028/www.scientific.net/kem.727.628.

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Анотація:
A novel zinc metal organic frameworks, named ZnL(2,2′-bpy), has been successfully synthesized, serving 3,6-dicarboxylic-9-ethylcarbazole acid (H2L) as ligand. This kind of ZnMOFs was characterized by FI-IR, elemental analysis, SEM, powder X-ray diffraction and single crystal X-ray diffraction to illustrate the structures. TG analysis was applied to investigate the thermostability. Structural analysis demonstrates that ZnMOFs possess triclinic crystal structure which is a 1D chain that occurs distorted-octahedral coordination geometry. Furthermore, the luminescent performance of ZnMOFs is performed and discussed in detail. The results show that ZnMOFs can emit blue luminescence originating, which is assigned to the ligand-to-metal charge transfer (LMCT).
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22

Wang, Hongrun, Li Wu, Huan Yi та ін. "Abnormal luminescent property of Mn2+ in α-LiZnBO3:Mn2+". Dalton Transactions 44, № 3 (2015): 1427–34. http://dx.doi.org/10.1039/c4dt02626h.

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23

Hu, Qing, Qi-Ming Zheng, Xin-Ru Ma, Zhuo-Zhi Lai, Tong-Qi Ye, and Ling Qin. "One luminescence probe and the impact of dye-adsorption on the luminescent property." Polyhedron 177 (February 2020): 114323. http://dx.doi.org/10.1016/j.poly.2019.114323.

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24

Zhang, Xia, Cui Xia Yan, and Rong Feng Guan. "Study on Different Synthesis Methods of Spherical YAG:Ce3+ Phosphor and its Luminescence Properties." Advanced Materials Research 1088 (February 2015): 371–76. http://dx.doi.org/10.4028/www.scientific.net/amr.1088.371.

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Анотація:
Spherical YAG:Ce3+phosphors were synthesized by three different routes namely sol-gel method, co-precipitation method and solvethermal method. The microstructure, crystallization and luminescent properties of the phosphors were studied in order to find the best processing parameter for spherical shape and good luminescence properties of YAG:Ce3+phosphor. Adding citric acid to the precursor solution resulted in the formation of spherical particles in sol-gel method. YAG:Ce3+phosphor made by co-precipitation method was separated with PEG2000, and its spherical particles of size was around 500nm. The hydro-thermal method could get perfect spherical appearance, but it needed heat treatment improve the luminescence property.
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25

Maity, Arunava, Firoj Ali, Hridesh Agarwalla, Bihag Anothumakkool, and Amitava Das. "Tuning of multiple luminescence outputs and white-light emission from a single gelator molecule through an ESIPT coupled AIEE process." Chemical Communications 51, no. 11 (2015): 2130–33. http://dx.doi.org/10.1039/c4cc09211b.

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Анотація:
A single gelator molecule (1) shows an ESIPT coupled AIEE process for generating multiple luminescent colors, including white-light, with varying aggregation as a function of the water content in a THF–water mixture. Luminescent property of 1 is retained in gel as well as in solid state.
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26

Teng, Mingjun, Xinru Jia, Xiaofang Chen, Zhiyong Ma, and Yen Wei. "Mechanochromic luminescent property of a polypeptide-based dendron." Chemical Communications 47, no. 21 (2011): 6078. http://dx.doi.org/10.1039/c1cc10873e.

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27

Qi, Meng, Lan Ping Shen, Yong Ming Wang, and Xiao Rong Zhou. "Development of Self-Cleaning Luminous PVC Flexible Composite Building Materials." Applied Mechanics and Materials 405-408 (September 2013): 2839–42. http://dx.doi.org/10.4028/www.scientific.net/amm.405-408.2839.

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Анотація:
The nanosized TiO2 and luminescent materials were coated on PVC flexible composite material to get self-cleaning luminous PVC flexible composite building materials, the materials durable-polluted, luminous, reused properties and the adhesion property of the nanosized TiO2 and luminescent material particles were tested and studyed. The experimental results show that the nanosized TiO2 and luminescent materials finishing self-cleaning luminous PVC flexible composite building materials gain significant and good durability performance of self-cleaning and luminous functions.
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28

Ostruszka, Radek, Denisa Půlpánová, Tomáš Pluháček, et al. "Facile One-Pot Green Synthesis of Magneto-Luminescent Bimetallic Nanocomposites with Potential as Dual Imaging Agent." Nanomaterials 13, no. 6 (2023): 1027. http://dx.doi.org/10.3390/nano13061027.

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Анотація:
Nanocomposites serving as dual (bimodal) probes have great potential in the field of bio-imaging. Here, we developed a simple one-pot synthesis for the reproducible generation of new luminescent and magnetically active bimetallic nanocomposites. The developed one-pot synthesis was performed in a sequential manner and obeys the principles of green chemistry. Briefly, bovine serum albumin (BSA) was exploited to uptake Au (III) and Fe (II)/Fe (III) ions simultaneously. Then, Au (III) ions were transformed to luminescent Au nanoclusters embedded in BSA (AuNCs-BSA) and majority of Fe ions were bio-embedded into superparamagnetic iron oxide nanoparticles (SPIONs) by the alkalization of the reaction medium. The resulting nanocomposites, AuNCs-BSA-SPIONs, represent a bimodal nanoprobe. Scanning transmission electron microscopy (STEM) imaging visualized nanostructures with sizes in units of nanometres that were arranged into aggregates. Mössbauer spectroscopy gave direct evidence regarding SPION presence. The potential applicability of these bimodal nanoprobes was verified by the measurement of their luminescent features as well as magnetic resonance (MR) imaging and relaxometry. It appears that these magneto-luminescent nanocomposites were able to compete with commercial MRI contrast agents as MR displays the beneficial property of bright luminescence of around 656 nm (fluorescence quantum yield of 6.2 ± 0.2%). The biocompatibility of the AuNCs-BSA-SPIONs nanocomposite has been tested and its long-term stability validated.
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29

Mai, Xuan-Dung, and Quang-Bac Hoang. "The Large-Scale Synthesis of Vinyl-Functionalized Silicon Quantum Dot and Its Application in Miniemulsion Polymerization." Journal of Nanomaterials 2016 (2016): 1–7. http://dx.doi.org/10.1155/2016/2490235.

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Stable luminescence, size-tunability, and biocompatibility encourage the deployment of Cd-free NPs into diverse biological applications. Here we report one-pot synthesis of blue-emitting and polymerizable silicon quantum dots (Si QDs) from which water-soluble Si QDs embedded polystyrene nanoparticles (SiQD@PS NPs) were prepared using a miniemulsion polymerization approach. The hydrodynamic size of NPs was controlled by KOH to oleic acid molar ratio. Studies on the photoluminescence properties of SiQD@PS NPs in different conditions reveal that they exhibit two-photon luminescence property and high stability against pH and UV exposure. These NPs add new size regime to the Si QDs based luminescent makers for bioimaging and therapy applications.
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30

LI, XIAOLI, GUANGQIAN YANG, XIBING YU, et al. "ZnO QUANTUM DOT HYBRID LUMINESCENT RESISTS FOR NANOIMPRINT LITHOGRAPHY." Surface Review and Letters 17, no. 05n06 (2010): 457–61. http://dx.doi.org/10.1142/s0218625x10014363.

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We report the preparation of ZnO quantum dot hybrid luminescent resists for nanoimprint lithography. Photoluminescence spectra indicate that ZnO QDs@AMONIL have a significant increase in the luminescent intensity, an obvious blue-shift of emission peak and the Stoke's shift, revealing that ZnO QDs@AMONIL have dramatic luminescent property change instead of inhibiting or only preserving the optical properties of pure ZnO QDs. The fabrication of two-dimensional (2D) photonic crystal structure on the ZnO QDs@AMONIL by UV-based nanoimprint lithography is demonstrated at last, which confirms the luminescent ZnO QDs@AMONIL reliable processing capabilities in wavelength-scale and envisions its promising applications in the optoelectronic micro-/nanodevices.
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31

Zhao, Zujin, Bairong He, and Ben Zhong Tang. "Aggregation-induced emission of siloles." Chemical Science 6, no. 10 (2015): 5347–65. http://dx.doi.org/10.1039/c5sc01946j.

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32

Li, Hong Cheng, Wei Ping Hu, and Yan Lei Wang. "Application and Research on Luminescent Coating in Interior Design." Advanced Materials Research 683 (April 2013): 230–33. http://dx.doi.org/10.4028/www.scientific.net/amr.683.230.

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Анотація:
As a new-type material, luminescent coating has received increasingly extensive application in modern life. The varieties of luminescent coatings gradually increase with the progress of science and technology, of which each kind of them shows its own unique property. This thesis researched on the different properties of various luminescent coatings so as to make them into rational use on the interior interface, thus achieving the more appropriate and safer use in interior design for the sake of beautification space, economizing and environmental protection.
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33

Lee, Yonghee, Somang Kim, Hyo Seok Kim, et al. "Highly luminescent blue-emitting CdZnS/ZnS nanorods having electric-field-induced fluorescence switching properties." Journal of Materials Chemistry C 5, no. 8 (2017): 2098–106. http://dx.doi.org/10.1039/c6tc04602a.

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34

Tian, Boshi, Mengnan Wang, Chunxia Liu, et al. "Luminescent hollow CaWO4 microspheres: template-free synthesis, characterization and application in drug delivery." RSC Advances 5, no. 126 (2015): 104172–78. http://dx.doi.org/10.1039/c5ra20633b.

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35

Yan, Xianju, Xiaoxian Song, Xiaoyue Mu, and Yue Wang. "Mechanochromic luminescence based on a phthalonitrile-bridging salophen zinc(ii) complex." New Journal of Chemistry 43, no. 40 (2019): 15886–91. http://dx.doi.org/10.1039/c9nj03704g.

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36

Wang, Li Hua. "Synthesis, IR Spectra and Fluorescent Property of Eu (III) Complexes with Multifunctional Ligands." Advanced Materials Research 366 (October 2011): 169–72. http://dx.doi.org/10.4028/www.scientific.net/amr.366.169.

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Анотація:
Two new Eu (III) complexes with multifunctional ligands, 2, 2'-dithiosalicylic acid (L1) and 1-acetyl-2-naphthol-4, 4'-diaminodiphenyl ether (L2) have been prepared in ethanol solution. The complexes are stable in air. The infrared spectrum and luminescent spectra of Eu (III) complexes were studied. The results indicate that the oxygen atoms of the ligands (L1 and L2), the nitrogen atoms of L2, the oxygen atoms of the nitrate and coordinated water molecules coordinate to Eu (III) ions. The luminescent property of Eu (III) complexes have been investigated in solid state.
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37

Nath, Subrata, Suraj Kumar Pathak, Joydip De, Santanu Kumar Pal та Ammathnadu S. Achalkumar. "Star-shaped π-gelators based on oxadiazole and thiadiazoles: a structure–property correlation". Molecular Systems Design & Engineering 2, № 4 (2017): 478–89. http://dx.doi.org/10.1039/c7me00040e.

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38

Lei, Lei, Shiqing Xu, Jingyi Yang, and Ho Wai Howard Lee. "Power-Dependent Optical Property of Yb/Er: NaGdF4@Yb: NaGdF4@Yb:NaNdF4 Nanocrystals." Nano 12, no. 07 (2017): 1750086. http://dx.doi.org/10.1142/s1793292017500862.

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Анотація:
In most of the reports on nanocrystal (NC) luminescent, the power depedence of luminescent intensity is studied using a continuous-wave laser with low power density, and the slopes of those different emission bands keep unchanged. In this paper, the up/down conversion of monodisperse Yb/Er: NaGdF4@Yb: NaGdF4@Yb: NaNdF4 NCs under the excitation of 800[Formula: see text]nm femtosecond laser was detected simultaneously by a home-built optical measurement setup. The power-dependent optical properties under the excitation of femtosecond laser are quite different from the normal situation, which is due to their high peak power and energy transfer processes: Nd[Formula: see text].
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39

Sun, Chengli, Wancong Lü, Xinghua Ma, et al. "White Up-Conversion Luminescent Property in Re3+:Gd3Ga5O12 Nanocrystals." Journal of Nanoscience and Nanotechnology 10, no. 10 (2010): 6527–33. http://dx.doi.org/10.1166/jnn.2010.2620.

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40

Usharani, V. L., and B. Eraiah. "Structural and Luminescent property of Holmium doped Borate Glasses." IOP Conference Series: Materials Science and Engineering 310 (February 2018): 012094. http://dx.doi.org/10.1088/1757-899x/310/1/012094.

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41

Wang, Rongfei, Zhengwen Yang, Dacheng Zhou, Zhiguo Song, and Jianbei Qiu. "Structure and luminescent property of Er3+-doped germanate glasses." Journal of Non-Crystalline Solids 383 (January 2014): 200–204. http://dx.doi.org/10.1016/j.jnoncrysol.2013.02.032.

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42

Uheda, K., H. Takizawa, T. Endo, et al. "Synthesis and luminescent property of Eu3+-doped LaSi3N5 phosphor." Journal of Luminescence 87-89 (May 2000): 967–69. http://dx.doi.org/10.1016/s0022-2313(99)00494-9.

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43

Jing, Xue-Min, Yong-Bo Tan, Li-Wei Xiao, and Yun-Ling Liu. "3D supermolecular cobalt phosphite with luminescent and magnetic property." Inorganic Chemistry Communications 57 (July 2015): 75–77. http://dx.doi.org/10.1016/j.inoche.2015.05.010.

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44

Park, Chu-Young, and Sangmoon Park. "Luminescent property of Eu2+, Mn2+ co-doped Y7O6F9 phosphors." Journal of Luminescence 178 (October 2016): 463–69. http://dx.doi.org/10.1016/j.jlumin.2016.06.035.

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45

LU Hong-bo, 陆红波, 张. 超. ZHANG Chao, 吴少君 WU Shao-jun, 邱龙臻 QIU Long-zhen, and 杨家祥 YANG Jia-xiang. "Synthesis and Photoluminescence Property of Luminescent Liquid Crystal Material." Chinese Journal of Luminescence 36, no. 11 (2015): 1227–32. http://dx.doi.org/10.3788/fgxb20153611.1227.

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46

Lv, Yu Guang, Li Zhang, Kui Lin Lv, et al. "Synthesis, Characterization and Property of Nano Rare Earth Terbium Complex with Gatifloxacin." Applied Mechanics and Materials 541-542 (March 2014): 185–89. http://dx.doi.org/10.4028/www.scientific.net/amm.541-542.185.

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Rare earth metal complexes have special characteristics, such as extremely narrow emission bands and high internal quantum efficiencies, which are suitable to be used as the emission materials, chemistry and biological technology. Ternary nano complex of terbium gatifloxacin phenanthroline was synthesized.The composition and structure of ternary complex were characterized by element analysis, Mass Spectrometry (MS), UltraViolet Absorption Spectrometry (UV) and fluorescence spectra(FS). The influences of solubility, thermal stability and luminescent properties of complex as well as addition of phenanthroline secondary ligands on the fluorescence spectra of the ternary complexes were studied. The results of fluorescence spectra analysis showed that partial energy was transferred from Characterization to terbium ions by intramolecular energy transfer processes, meanwhile, the addition of phenanthroline can effectively increase the luminescence intensity of terbium icons. The complex possessed well luminescence and showed characteristic emission peaks of Tb3+ under UV light excitation and emitted strong green fluorescence. Moreover, in an ITO/PVK/Tb(GFLX)3Phen/Al device, Tb3+ ion can be excited by intramolecular ligand-to-metal energy transfer process. The main peak of emission at 545 nm is attributed to 5D0→7F2 transition of the Tb3+ ion, and this process results in the enhancing green emission. Biological actrivity properties of the rare earth complex was well studied.
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47

Li, Dan-Yang, Hua Xie, Xiao-Qiang Yao, Heng-Chang Ma, Zi-Qiang Lei та Jia-Cheng Liu. "A luminescent coordination polymer based on a π-conjugated ligand: Syntheses, structure and luminescent property". Journal of Molecular Structure 1134 (квітень 2017): 171–73. http://dx.doi.org/10.1016/j.molstruc.2016.12.076.

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48

Wang, Lingli, Haiyong Ni, Qiuhong Zhang, and Fangming Xiao. "The Influence Mechanism of Halogen Ion on the Temperature Quenching Performance of Sr2SiO4:Eu Phosphors." Journal of Nanoscience and Nanotechnology 16, no. 4 (2016): 3990–93. http://dx.doi.org/10.1166/jnn.2016.11790.

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The luminescent properties of Sr2SiO4:Eu phosphors synthesized with and without flux have been investigated. With the co-dopation of NH4Cl, the luminescent intensity of Sr2SiO4:Eu is increased and the temperature quenching property is improved. The effect of NH4Cl is analyzed not only from the crystallinity of the Sr2SiO4 crystal but also the band structure of Sr2SiO4 host, which is calculated by density functional method with the local density approximation.
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49

Cao, Yuxia. "Long-Lasting Phosphorescent Properties of Tb3+ Doped ZnO–P2O5–SiO2 Glasses." High Temperature Materials and Processes 35, no. 3 (2016): 221–24. http://dx.doi.org/10.1515/htmp-2014-0179.

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AbstractThe long-lasting phosphorescent glass with the composition of ZnO–P2O5–SiO2: Tb3+ was prepared by melt-quenched method. After irradiation by 254 nm light, a visible greenish light can be observed with the naked eyes, in the dark for up to 9 h after removal of the activating light. The luminescent properties of ZnO–P2O5–SiO2: Tb3+ were studied by fluorescence spectra, afterglow spectra and thermoluminescence spectra. The results show that the luminescent properties of the glasses become better with the increase of ZnO contents. The luminescent properties of glasses increase with the increase of Tb3+ contents. When 2% of ZnO is replaced by 2% of RO (RO=CaO, SrO, BaO), the luminescent property of glasses become worse in the order of CaO, SrO, BaO. The higher the contents of RO (RO=CaO, SrO, BaO) are, the worse the luminescent properties of the glasses become.
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50

Tamano, Kana, and Toyoko Imae. "Investigation of Luminescent Poly(propylene imine) Dendrimer." Journal of Nanoscience and Nanotechnology 8, no. 9 (2008): 4329–34. http://dx.doi.org/10.1166/jnn.2008.279.

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Анотація:
Luminescence phenomenon from NH2-terminated third generation poly(propylene imine) dendrimers in water was investigated. Two excitation bands (340 and 370 nm) and corresponding emission bands (∼400 and ∼450 nm, respectively) were detected. Emission bands were intensified with time, heating and air-bubbling and converged at certain intensities, where the ∼400 nm band was red-shifted. The initially weak emission band at ∼450 nm in an alkaline solution was intensified up to the comparable intensity to the strongest emission band at ∼400 nm in an acidic solution, after long time. While 1H NMR spectra depended on pH owing to the protonation of amine, those were slightly affected by the time, heating and air-bubbling. However, no new 1H NMR signals appeared even after long time, indicating no finding of chemical structure change of dendrimer. This suggests that the luminescent property should result from any interaction of amine with oxygen but not the chemical reaction.
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