Article
Materials Science, Multidisciplinary
Ekaterina V. Ilyina, Yuri Y. Gerus, Svetlana V. Cherepanova, Alexander F. Bedilo
Summary: Calcium aluminate aerogels with mayenite stoichiometry C12A7 were prepared for the first time. The surface area of amorphous aerogel obtained after hydrolysis with stoichiometric amount of water was about 330 m(2)/g after supercritical drying and 170 m(2)/g after calcination at 500 degrees C. The presence of diphenyloxyl nitroxyl radicals on the surface of calcined C12A7 aerogels suggests the existence of mayenite cages capable of stabilizing active forms of oxygen.
Article
Construction & Building Technology
Yalin Zheng, Chong Wang, Shuai Zhou, Guangqi Xiong
Summary: This study investigates the hydration process of C12A7-based cement in a mix with precipitated calcium carbonate using various methods. The results show that early hydration is fast, with monocarbonate dominating, leading to a dense microstructure and stable strength development.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
A. Koehler, J. Neubauer, F. Goetz-Neunhoeffer
Summary: This study investigates the effect of mayenite (C(12)A(7)) dissolution on the early hydration of calcium aluminate cement (CAC) at different temperatures. It is found that the presence of C(12)A(7) leads to heat flow and reactions during hydration, as it dissolves instantly after water addition.
CEMENT AND CONCRETE RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Li Feng Lim, Martyna Judd, Petra Vasko, Michael G. Gardiner, Dimitrios A. Pantazis, Nicholas Cox, Jamie Hicks
Summary: An isostructural series of heavy Group 14 E(I) radical anions (Ge, Sn, Pb), stabilized by a bulky xanthene-based diamido ligand, were synthesized and characterized. The E(II) precursor complexes were one-electron reduced with sodium naphthalenide in THF, yielding the charge-separated radical anions as sodium salts. The comprehensive characterization using EPR spectroscopy, X-ray crystallography, and DFT analysis revealed that the spin density of the unpaired electron is mainly located in a p-orbital of pi symmetry on the Group 14 center in all cases.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Yulia Goldshtein, Yuri Glagovsky, Boris Tumanskii, Natalia Fridman, Dmitry Bravo-Zhivotovskii, Yitzhak Apeloig
Summary: This article reports the synthesis and characterization of the first isolated genuine germenyl lithiums. Several reactions and products of these compounds are described. Additionally, the structure and properties of the generated germenyl radicals are revealed through experiments and calculations.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Shazia Nabi, Feroz Ahmad Sofi, Qounsar Jan, Aamir Y. Bhat, Pravin P. Ingole, Maryam Bayati, Mohsin Ahmad Bhat
Summary: Designing molecular cages for atomic/molecular scale guests is an art used by material chemists to explore the advantages of this technique. In this study, we successfully encapsulated cytochrome c (Cyt-c) inside specially designed molecular cages to create a Cyt-c@Cu-HMHMB composite. The results demonstrate that Cu-HMHMB is an excellent matrix for Cyt-c encapsulation, showing stable electrocatalytic performance.
Article
Chemistry, Physical
Michal Pyzalski, Jaroslaw Dabek, Anna Adamczyk, Tomasz Brylewski
Summary: The beta-gamma polymorphic transition of calcium orthosilicate (C2S) leads to its self-disintegration into a powder with a high specific surface area, making its production energy-efficient and environmentally friendly. A study found that the optimal conditions for self-disintegration of C2S materials with up to 60 wt% C(12)A(7) content included a cooling rate of 5 K·min(-1) and a mass ratio of C2S/C(12)A(7) of 70/30, ensuring both efficient self-disintegration and desired grain size distribution.
Article
Materials Science, Ceramics
Vijay Singh, Jung-Kul Lee, Aman Prasad, A. S. Rao
Summary: In this study, a series of CaYAl3O7 phosphors doped with different concentrations of Pb2+ were synthesized using an auto solution combustion route. The structure, luminescence, and electron paramagnetic resonance (EPR) spectra of the phosphors were analyzed. XRD patterns confirmed the formation of tetragonal phase CaYAl3O7 with a crystallite size ranging from 37 to 42 nm. SEM images revealed the surface morphology of the prepared samples. The emission spectra showed a wide emission band centered at 362 nm under 270 nm excitation for the phosphors. The EPR spectra of both undoped and Pb2+-doped CaYAl3O7 phosphors exhibited distinct defect centers, namely F+ -centers, with different g-values.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Electrical & Electronic
Mitesh Chakraborty, Dhritiman Banerjee, Sujeet Singh, Joydip Dutta
Summary: The zinc oxide (ZnO) phosphors co-doped with Gd3+/Yb3+ were synthesized using the solid-state reaction method. The compound ZGYO {Zn(1 1.5x- 1.5y)GdxYbyO} was prepared for different molar concentrations of Yb (y) = 0.00, 0.01, 0.03, 0.05 and Gd (x) fixed at 0.01. XRD analysis confirmed the hexagonal phase of the ZnO wurtzite structure, while EDX and XPS spectra confirmed the successful incorporation of Gd3+ and Yb3+ in the ZnO lattice.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Article
Chemistry, Multidisciplinary
Gabriel Glotz, Konstantin Knaipp, Martin S. Maier, Katharina Hull, Alexander Novak, Anne-Marie Kelterer, Thomas Griebenow, Rainer Herges, Dirk Trauner, Georg Gescheidt
Summary: The size of the central ring in 1,2-diazocines and diazonines influences the configuration of the one-electron reduced species. Diazonines with a central nine-membered heterocycle exhibit light-induced E/Z isomerization, while retaining the configuration of the diazene N=N moiety upon one-electron reduction. Therefore, E/Z isomerization is not induced by reduction.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Marine Elmaalouf, Alexandre Da Silva, Silvia Duran, Cedric Tard, Miguel Comesana-Hermo, Sarra Gam-Derouich, Valerie Briois, Damien Alloyeau, Marion Giraud, Jean-Yves Piquemal, Jennifer Peron
Summary: Highly porous iridium oxide nanostructured cages were synthesized using cheap Cu2O cubes as templates via a water-based process at room temperature. The resulting IrO2 hierarchical porous structures exhibited outstanding activity after calcination and acid leaching.
Article
Optics
Jiawen Zeng, Guoxin Peng, Shaoan Zhang, Gopi R. Krishnan, Guifang Ju, Yang Li, Yihua Hu
Summary: A novel NIR afterglow center of Fe3+ is proposed, and a long persistent phosphor of SrAl12O19: Fe3+ is successfully fabricated in this study. The in-situ characterizations support that the substitution of Fe3+ to Al3+ creates a trap with the negative effective charge, leading to a bright emission band.
JOURNAL OF LUMINESCENCE
(2021)
Article
Materials Science, Multidisciplinary
Zijian Su, Kang Liu, Kun Lin, Shuo Liu, Yuanbo Zhang, Tao Jiang
Summary: This study investigated a novel process for detoxifying, recycling, and high-value utilization of secondary aluminum dross (SAD). The experimental results showed that under optimized roasting conditions, most of the hazardous substances in SAD could be transformed into harmless compounds, and sodium, potassium, and chlorine could be efficiently recovered. In addition, the fluorine in SAD was solidified in calcium aluminates, which can be used for steel refining desulfurization.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Multidisciplinary
Shalaka Varshney, Meirav Oded, Sergei Remennik, Vitaly Gutkin, Uri Banin
Summary: Aluminum nanocrystals are a promising alternative to silver and gold for various applications. This research presents two wet-chemical colloidal approaches for surface coating of Al nanocrystals, which can control the surface chemistry and oxide thickness. By manipulating the surface chemistry, this research promotes the utilization of Al nanocrystals in diverse applications.
Article
Engineering, Electrical & Electronic
O. Aitmellal, L. Oufni, M. Y. Messous, F. Neatu, M. Florea, S. Neatu, A. M. Rostas, M. Secu
Summary: In this study, Lanthanum orthophosphate (LaPO4) and La0.95-xCe0.05MnxPO4 phosphors were successfully synthesized via a co-precipitation method, resulting in the formation of LaPO4 nanorods. Doping with Mn2+ and Ce3+ led to a slight distortion of the LaPO4 crystalline structure, increased lattice strain, and a reduction of the band gap to 4.70 eV, enabling green emission from Mn2+ ions.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Physical
Shengnan Li, Yuxue Liu, Chunguang Liu, Duanting Yan, Hancheng Zhu, Changshan Xu, Li Ma, Xiaojun Wang
JOURNAL OF ALLOYS AND COMPOUNDS
(2017)
Article
Materials Science, Ceramics
Hongyu Bian, Yuxue Liu, Duanting Yan, Hancheng Zhu, Chunguang Liu, Changshan Xu, Xiaojun Wang, Hong Zhang
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2017)
Article
Materials Science, Multidisciplinary
Zheng Gong, Jian Yang, Hancheng Zhu, Duanting Yan, Chunguang Liu, Changshan Xu, Yuxue Liu
MATERIALS RESEARCH BULLETIN
(2019)
Article
Chemistry, Physical
Shengsheng Wei, Hancheng Zhu, Ji Zhang, Lei Wang, Meiqi An, Yinglin Wang, Xintong Zhang, Yichun Liu
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Engineering, Environmental
Jian Yang, Yangyang Zhao, Yangqi Meng, Hancheng Zhu, Duanting Yan, Chunguang Liu, Changshan Xu, Hong Zhang, Lin Xu, Yuxin Li, Yuxue Liu
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Multidisciplinary Sciences
Xiangyu Ou, Xian Qin, Bolong Huang, Jie Zan, Qinxia Wu, Zhongzhu Hong, Lili Xie, Hongyu Bian, Zhigao Yi, Xiaofeng Chen, Yiming Wu, Xiaorong Song, Juan Li, Qiushui Chen, Huanghao Yang, Xiaogang Liu
Summary: The research demonstrates a flat-panel-free, high-resolution, three-dimensional imaging approach using lanthanide-doped nanomaterials and flexible substrates, termed X-ray luminescence extension imaging.
Review
Chemistry, Multidisciplinary
Hongyu Bian, Yi Yiing Goh, Yuxia Liu, Haifeng Ling, Linghai Xie, Xiaogang Liu
Summary: The performance of neural synapse networks depends on the characteristics of synaptic learning, requiring the design of reliable multi-functional neural synaptic devices to achieve intelligent functions.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Applied
Jie Ren, Yadan Ding, Hancheng Zhu, Zhipeng Li, Xia Hong, Huiying Zhao, Hong Zhang
Summary: Upconversion nanosensitizers have important applications in the treatment of diseases and utilization of solar energy. Improving energy transfer efficiency does not guarantee high acceptor efficacy, as the interaction between adjacent sensitizing molecules plays a critical role.
JOURNAL OF RARE EARTHS
(2022)
Article
Chemistry, Multidisciplinary
Hongyu Bian, Xian Qin, Yiming Wu, Zhigao Yi, Sirui Liu, Yu Wang, Carlos D. S. Brites, Luis D. Carlos, Xiaogang Liu
Summary: By utilizing a special class of memristive materials based on persistent luminescent emitters, memory processes and synaptic plasticity can be effectively simulated. These memory materials with optical characteristics allow for direct observation of subtle changes in luminescence intensity.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Zhiyong Wang, Laiyuan Wang, Yiming Wu, Linyi Bian, Masaru Nagai, Ruolin Jv, Linghai Xie, Haifeng Ling, Qi Li, Hongyu Bian, Mingdong Yi, Naien Shi, Xiaogang Liu, Wei Huang
Summary: Neural systems can efficiently process information by selectively filtering and memorizing spatiotemporal information. A novel multifunctional memristor based on metalloporphyrin/oxide hybrid heterojunction is proposed and demonstrated, showing smooth, gradual conductive transitions. The memristive characteristics of this hybrid system can be modulated by altering the metal center, offering potential applications in neural-signal analysis.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Lu Zi, Wen Xu, Rui Sun, Zeming Li, Jingwei Zhang, Le Liu, Nan Wang, Yue Wang, Nan Ding, Junhua Hu, SiYu Lu, Hancheng Zhu, Hongwei Song
Summary: This study demonstrates the successful doping of lanthanide ions into perovskite single crystals, resulting in multi-mode photodetectors with improved luminescence and electrical properties. The doped MAPbI3 single crystals show dual-mode luminescence spanning from visible to near-infrared emissions, making them suitable for sensitive detection of visible light, NIR light, and X-rays.
CHEMISTRY OF MATERIALS
(2022)
Letter
Chemistry, Multidisciplinary
Hongyu Bian, Caisheng Tang, He Zhao, Xian Qin, Xiaogang Liu
Summary: Trivalent lanthanides are commonly used in sodium yttrium fluoride nanocrystals to improve their optical properties. At low dopant concentrations, large lanthanides exhibit an anisotropic distribution in the hexagonal yttrium sublattice, suggesting the formation of one-dimensional dimers or chains. Our research indicates that the concentration quenching threshold of beta-NaYF4 nanocrystals is lower than that of their cubic counterparts, and the anistropic distribution can be modulated by microstrain management via alkali metal codoping. Understanding dopant distribution in inorganic crystals may lead to the development of new materials and properties in the future.
Article
Materials Science, Multidisciplinary
Hongyu Bian, Xian Qin, Xinwen Chen, Yu Wang
Summary: This study reports a new strategy for modulating energy transfer through X-ray irradiation in Yb3+ and Tm3+ co-doped nanoparticles. Mechanistic studies reveal that X-ray induced Frenkel defects in crystal lattices lead to energy mismatch between adjacent Yb3+ sensitizers and activators, resulting in inefficient energy transfer. High-contrast X-ray imaging and long-term information storage using nanoparticle-containing flexible films are demonstrated.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Jingwei Zhang, Yonghua Han, Li Zhang, Hancheng Zhu, Ting Song, Duanting Yan, Meng Zhang, Chao Wang, Xintong Zhang
Summary: Cs3Cu2I5 has attracted widespread attention due to its low cost, high photo-luminescence quantum yield, green and non-toxic properties. By introducing Mn2+ into Cs3Cu2I5 through solid-state ball milling method, the crystal structure of Cs3Cu2I5 was minimally affected. Copper ions and manganese ions were found to exist stably as Cu+ and Mn2+ respectively. Mn2+ doping led to the emergence of a new emission peak at 560 nm, achieving dual color luminescence. The material also exhibited excellent thermal stability, making it suitable for solid-state lighting and anti-counterfeiting applications.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Chemistry, Physical
Zi-Han Xu, Chang-Yan Zhu, Xiao-Fei Zhu, Yu-Juan Zhai, Ji Zhang, Han-Cheng Zhu
Summary: This study investigates the effects of alkoxy groups on the adsorption, dye aggregation, and charge recombination process in dye-sensitized solar cells. It is found that alkoxy chains can not only shield but also assist dye adsorption and inhibit charge recombination by covering the TiO2 surface effectively. The existence of alkyl chains can also inhibit dye aggregation and reduce intermolecular electron transfer. Additionally, the Ti-O interaction between the alkoxy group and the Ti atom at the surface contributes substantially to interface stability. These findings provide new insights for the rational design of high-performance sensitizers.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Optics
R. B. Adamov, G. A. Melentev, I. V. Sedova, S. V. Sorokin, G. V. Klimko, I. S. Makhov, D. A. Firsov, V. A. Shalygin
Summary: This study investigates the THz luminescence in doped nanostructures with GaAs/AlGaAs quantum wells under interband optical pumping. The results show that the spatial separation of donors and acceptors can greatly enhance the integrated intensity of THz emission.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Yanru Li, Lei Zhong, Sha Jiang, Yutong Wang, Binyao Huang, Guotao Xiang, Li Li, Yongjie Wang, Chuan Jing, Xianju Zhou
Summary: In this study, a ratiometric luminescent thermometry based on dual-emission centers was developed using co-doped CaNb2O6 phosphors with Bi3+ and Pr3+. The obtained samples exhibited good thermosensitive and thermochromic characteristics, with a maximum absolute sensitivity of 0.09 K-1 @ 528 K and a maximum relative sensitivity of 2.17 % K-1 @ 453 K.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Yujing Gong, Yeqing Wang, Zhiyuan Wang, Yijian Sun, Yi Yu
Summary: Single crystals of Dy3+ single-doped and Dy3+/Tb3+ co-doped CaYAlO4 were grown and analyzed. The incorporation of Tb3+ resulted in increased absorption and emission cross sections. The fluorescence lifetimes and branching ratios of the yellow emission were affected by the presence of Tb3+. The deactivation effect of Tb3+ ions and energy transfer mechanism were also discussed.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Lu Chen, Zhuangzhuang Ma, Jian Chen, Wang Guo
Summary: This study focuses on enhancing the thermal robustness of phosphor converter materials by preparing composite ceramics of YAG:Ce combined with high-thermal-conductivity MgO. The composite ceramics showed high density and thermal conductivity at the optimum temperature of 1400℃. Stable laser-driven white light was obtained under blue laser excitation.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Yuwei Wu, Chunhui Niu, Lei Wang, Mingqing Yang, Shiyu Zhang
Summary: Er3+-doped germanate-tellurite glasses were prepared and their structure, luminescent, and temperature-sensing properties were studied. The glass exhibited large values of O2 and O6 and its luminescence intensity varied with temperature.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Kensei Ichiba, Takumi Kato, Kenichi Watanabe, Yuma Takebuchi, Daisuke Nakauchi, Noriaki Kawaguchi, Takayuki Yanagida
Summary: In this study, Eu-doped YVO4 single crystals with different concentrations were fabricated to evaluate their photoluminescence and scintillation properties. The results showed that the samples doped with Eu exhibited emission peaks due to 4f-4f transitions in PL and scintillation spectra. Based on the pulse height spectra, the light yield of the Eu-doped samples increased with increasing Eu concentration, while the afterglow level decreased.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Daiwen Xiao, Hei-Yui Kai, Anjun Huang, Menglin Song, Ka-Leung Wong, Peter A. Tanner
Summary: The emission spectra of Cs2NaEuCl6 nanoparticles synthesized by the hot injection method are explained. The dispersion of the nanoparticles in alkane solvents in the experiment allows the determination of the magnetic dipole radiative rate for the D-5(0) -F-7(1) channel in vacuum, which is in agreement with the calculated value.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Italia V. Barbosa, Geraldine Dantelle, Alain Ibanez, Lauro J. Q. Maia
Summary: The thermal response and luminescence properties of different oxide matrices were evaluated to design more accurate thermal probes. It was found that thermal probes emitting in BW-II provide better thermal sensing with higher signal-to-noise ratio. Additionally, doping Nd3+ in Y2O3 matrix maximizes luminescence intensity, making it a promising matrix for thermal sensing.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Xin Li, Yu Zhang, Hongrui Ren, Lunlong Xie, Yinsheng Di, Mengqing Han, Zhaohui Bai, Quansheng Liu, Liangliang Zhang, Jiahua Zhang
Summary: This study successfully prepared phosphor samples based on Ca3-xLuxSc2-xMgxSi3O12:Ce3+ and investigated their luminescence properties. With the increase in Lu-Mg concentration, the peak of the sample redshifted, but the thermal stability gradually decreased. The LD devices made from CLSMS:Ce3+ fluorescent materials showed a decrease in cyan-green light and an increase in red light as the Lu-Mg concentration increased.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Tim Pier, Julia Hopster, Thomas Juestel
Summary: This study investigates and reports on several samples of cerium-activated gallium-based garnet phosphors. The optimal activator concentration was found to be 1 atom-%. The size of non-emitting lanthanide ions and the molar concentration of cerium strongly influenced the crystal field splitting, which in turn shaped the excitation and emission wavelengths.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Guijie Zhao, Wei Shi, Xin Xin, Fengcai Ma, Yongqing Li
Summary: This study reveals for the first time the proton transfer pathways and changes in the photophysical properties of P-TNS with three intramolecular hydrogen bonds. The reaction mechanism and driving force for the proton transfer process are explained through analysis of potential energy surface, frontier molecular orbitals, and hydrogen bond parameters, among others.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Li He, Jinshu Huang, Zhengce An, Haozhang Huang, Yu Zhao, Kexin Zhong, Bo Zhou
Summary: In this study, we designed a NaYF4:Yb3+/Tm3+@NaYF4 core-shell nanostructure to achieve thermochromic upconversion and high thermal sensitivity. We found that the blue upconversion emission of Tm3+ decreased while the deep-red emission increased with elevating temperature. The sample also showed a gradual emission color change from blue to purplish-red, and the optimal relative sensitivity reached 2.79% K-1.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Rupesh A. Talewar
Summary: A series of Li2TiO3 phosphors doped with Mn4+ and codoped with Mn4+ and Er3+ were synthesized, which demonstrated the ability of Mn4+ ions to absorb UV-Vis photons and subsequently transfer energy to Er3+ ions, resulting in the emission of near-infrared light. These materials have the potential to enhance the absorption efficiency of Er3+-based luminescent materials.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
Xingyuan Ma, Jianfeng Li
Summary: Carbon quantum dots (CQDs) with tunable photoluminescence properties have been synthesized using suitable carbon and dopant sources in an aqueous system. The synthesized CQDs exhibited blue, green, yellow, and red emissions, and solid-state luminescence was achieved through the preparation of solid-state fluorescent films and phosphors. This study provides important technical support for the future development of CQDs synthesis.
JOURNAL OF LUMINESCENCE
(2024)
Article
Optics
De Bin Fu, Yang Bing Xu, Yu Teng Zhang, Shan Ting Liu, Xiao Fei Yang, Sheng Hua Liu
Summary: A pair of new chiral molecules, (S)-4 and (R)-4, have been designed and synthesized by introducing valine-containing groups at symmetrical positions on the periphery of an indolo[3,2-b]carbazole unit. These molecules exhibit aggregation-induced circular dichroism (AICD) properties in DMF/water mixtures, and in a mixture with 99% water fraction, they show strong, mirror-image, blue circularly polarized luminescence (CPL) signals.
JOURNAL OF LUMINESCENCE
(2024)
