Article
Chemistry, Physical
Debao Zhang, Ji Zhou, Xuguang Cao, Xiaotian Ge, Fei Tang, Changcheng Zheng, Jiqiang Ning, Shijie Xu
Summary: In this paper, the giant tunability of thermal behaviors for the vibronic luminescence of Mn4+ ions in fluoride phosphors is demonstrated. The peculiar behavior is associated with the thermal excitation of low-frequency phonon bath, and a theoretical model is constructed to explain the phenomenon. The governing parameters for the distinct thermal behaviors of Mn4+-ion luminescence, including the thermal activation energy and the average phonon energy, are determined.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Guixian Li, Yu Xue, Qinan Mao, Lang Pei, Hong He, Meijiao Liu, Liang Chu, Jiasong Zhong
Summary: Luminescent thermometers provide a non-contact method of probing temperature with high sensitivity and response speed at the nanoscale. By co-doping the highly temperature-sensitive Mn4+ and less-sensitive Eu3+ (or Sm3+) activators into a Ca2GdSbO6 matrix, an effective thermometer is formed.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Sergei A. Novikov, Yimin Lu, Weiguo Zhang, P. Shiv Halasyamani, Shruti Hariyani, Jakoah Brgoch, Vladislav V. Klepov, zur Loye Hans-Conrad, Yurij Mozharivskyj
Summary: Single crystals of three new compounds were synthesized and characterized for their structures and properties. These compounds show potential applications in light conversion and red-emitting phosphors.
INORGANIC CHEMISTRY
(2022)
Article
Engineering, Environmental
Yayun Zhou, Hong Ming, Shuai Zhang, Tingting Deng, Enhai Song, Qinyuan Zhang
Summary: Mn4+-doped fluoride red-emitting phosphors are used in WLEDs for wide color gamut displays, achieved by equivalent doping of [MnF6]2- into [MoO2F4]2- lattice, resulting in a fast-switching display with no obvious image retention.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Yang Wang, Shuai Zhou, Po Hu, Wei Zhong, Jiajun Fu
Summary: Here, we developed a unique type of lanthanide-doped core-multishell nanocrystals (CSSS-UCNPs) that exhibited bimodal temperature-dependent upconversion (UC) emissions and orthogonal luminescence triggered by dual near-infrared (NIR) lasers. The CSSS-UCNPs produced strong yellowish-green and red luminescence through controlled constructional parameters under excitation wavelengths of 980 nm and 1550 nm, respectively. The photoluminescence of CSSS-UCNPs showed temperature dependence, with enhanced green luminescence at 980 nm excitation and quenched red luminescence at 1550 nm excitation. The unexpected thermal enhancement of Ho3+ luminescence was attributed to heat-induced vibration attenuation of oleate ligands, which had not been reported before. The excitation/temperature-responsive luminescence of CSSS-UCNPs showed potential for high-security-level anti-counterfeiting and provided new insights into anomalous thermal enhancement in large-sized Yb3+-sensitized UCNPs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Optics
Minkun Jin, Yujian Wu, Zhiyu Zhang, Jinmeng Xiang, Chongfeng Guo
Summary: Developing multi-mode luminescent anti-counterfeiting materials is an effective strategy to ensure the security of important documents and information. In this study, a multi-mode luminescent material Ba2GdTaO6: Mn4+, Er3+ was successfully synthesized and its luminescence properties were discussed. The potential application in anti-counterfeiting was demonstrated by screen printing fluorescent security patterns.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Engineering, Environmental
Konglan Chen, Zifan Shao, Chuang Zhang, Shiyu Jia, Tingting Deng, Rongfu Zhou, Yayun Zhou, Enhai Song
Summary: This study successfully develops a Mn4+-doped oxyfluoride single crystal as an accurate dual-mode optical temperature sensor and applies it to a portable optical fiber thermometric platform. By growing a homogeneous NNOF shell, the moisture resistance of the sensor is improved, extending its operational lifespan. The fabricated thermometric platform shows accurate measurement results for boiling water and has great potential for practical applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Yi Yu, Kai Shao, Chonghui Niu, Mingjie Dan, Yingying Wang, Xiourong Zhu, Xianke Zhang, Yeqing Wang
Summary: A new temperature sensing material, SrGd2Al2O7:Bi3+,Mn4+, based on fluorescence intensity ratio, was designed and demonstrated excellent signal resolution and accurate temperature detection.
Article
Optics
Zhongli Wu, Yupeng Zhang, Dongmei Bao, Hongqing Li, Xueqing Hou, Jilan Wang
Summary: The optical transition properties of Tm3+ in oxyfluoride tellurite glass were determined using the Judd-Ofelt theory. The study obtained radiative transition rates, fluorescence branching ratios, and intrinsic lifetimes for interesting transitions or levels. It was found that the optimal doping concentration for upconversion luminescence was 0.1% Tm2O3. The analysis also confirmed two-photon and three-photon processes for specific emissions of Tm3+.
JOURNAL OF LUMINESCENCE
(2022)
Article
Optics
Hua Fan, Zuizhi Lu, Yingbin Meng, Peican Chen, Liya Zhou, Jiansheng Zhao, Xiaotong He
Summary: Optical temperature sensors based on Ca2LaSbO6: Mn4+, Eu3+ phosphors show high sensitivity for temperature measurement. The fluorescence intensity ratio of Mn4+ and Eu3+ can be used to determine the temperature.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Engineering, Environmental
Xiaoxin Zheng, Jinke Jiang, Qinglian Lin, Cuicui Li, Jiashuai Chen, Shuwen Wang, Quanxiang Han, Xin Ye, Yang Liu, Xutang Tao
Summary: Reported is a family of color-tunable room-temperature phosphorescence (RTP) materials by doping isophthalonitriles into polymers. The doped polymers not only possess adjustable phosphorescence from blue to green by controlling the excitation wavelength and the doping concentration, but also exhibit ultralong lifetimes and afterglow times. Multi-level encryption can be achieved through alternation of the excitation wavelength and adoption of different concentration doped polymers.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Ceramics
Xinyang Shi, Yuqi Chen, Guixian Li, Kangrui Qiang, Qinan Mao, Lang Pei, Meijiao Liu, Jiasong Zhong
Summary: In this study, a luminescence thermometer with high sensitivity was designed by taking advantage of the distinguished thermal response between Eu3+ and Mn4+. The thermometric performances were investigated using the fluorescence intensity ratio (FIR) of Eu3+(5D0 -> 7F2)/Mn4+(2Eg -> 4A2g) under dual-wavelength excitation, and the maximum relative sensitivities were determined to be 4.072% K-1 and 3.072% K-1. This research provides an effective strategy for designing high-sensitivity dual-wavelength excitation optical thermometers and has great potential in the field of luminescence thermometry.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Xiangyi Li, Guangdong Wu, Hao Bai, Mengjiao Sheng, Zhihua Leng, Juanqin Xue, Qiang Bi
Summary: A two-step synthetic route was designed to successfully synthesize Y6O5F8:Yb3+/Er3+ UC phosphors for optical temperature sensing, demonstrating strong UC emission. The optical temperature sensing behavior of Y6O5F8:10%Yb3+/1%Er3+ was explored using the FIR technique, showing promising application potentials with excellent sensitivity.
Article
Materials Science, Ceramics
Bingxin Zhu, Lei Wang, Qiufeng Shi, Haijie Guo, Jianwei Qiao, Caie Cui, Ping Huang
Summary: In this study, a series of novel Tb3+/Mn4+ co-doped SrLaMgNbO6 phosphors were synthesized and investigated for their structural, luminescence spectroscopic, and decay kinetics properties. The results showed that the phosphors exhibited temperature-dependent photoluminescence with distinct differences in fluorescence intensity ratios of Tb3+ and Mn4+, making them a viable candidate for dual-mode optical temperature detection.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
R. Lisiecki
Summary: Germanatetellurite glasses doped with dysprosium at different concentrations were studied for their luminescence characteristics and temperature-dependent absorption using optical spectroscopy techniques. The findings revealed that the efficiency of dysprosium excitation decreases at higher temperatures and demonstrated the presence of effective dysprosium interactions in the studied glasses.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Chemistry, Physical
Xiangfu Wang, Ye Wang, Leisheng Jin, Yanyan Bu, X. L. Yang, Xiaohong Yan
JOURNAL OF ALLOYS AND COMPOUNDS
(2019)
Article
Materials Science, Ceramics
Kai Zhou, Haiyan Zhang, Yuanjian Liu, Yanyan Bu, Xiangfu Wang, Xiaohong Yan
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2019)
Article
Chemistry, Physical
Jiang Zhao, Qingling Shi, Yanyan Guo, Xiangfu Wang, Debo Wang, Furui Tan, Li Jiang, Ying Yu
JOURNAL OF POWER SOURCES
(2019)
Review
Engineering, Environmental
Junpeng Xue, Xiangfu Wang, Jung Hyun Jeong, Xiaohong Yan
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Optics
Callum M. S. Jones, Nikita Panov, Artiom Skripka, Joseph Gibbons, Fabian Hesse, Jan-Willem G. Bos, Xiangfu Wang, Fiorenzo Vetrone, Guanying Chen, Eva Hemmer, Jose Marques-Hueso
Article
Engineering, Environmental
Xiangfu Wang, Chengqian Shen, Chengfeng Zhou, Yanyan Bu, Xiaohong Yan
Summary: This paper discussed the harmful effects of heavy metal elements and the applications of optical detection in environmental monitoring and biological science, summarizing the optical detection methods and principles of 12 metal ions.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Xiangfu Wang, Jihong Yu, Yixuan Cui, Wei Li
Summary: Flexible pressure sensors with high sensitivity, flexibility, and lightness have been extensively researched in various fields. The latest research progress, challenges, and future prospects of flexible pressure sensors are discussed, emphasizing the importance of exploring new sensing mechanisms and functional materials.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Chemistry, Physical
Fei Xie, Yixuan Cui, Min She, Xiangfu Wang, Chun-Sheng Liu
Summary: The electronic structure and optical property of Ba2Mg(PO4)(2):Eu2+ under different pressures were investigated using density functional theory. The lattice parameters decrease and the band gap increases with pressure. The absorption spectra show a blue shift with increasing pressure, indicating potential application for pressure sensors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Electrical & Electronic
Yihui Chen, Min She, Bin Wang, Xiangfu Wang, Xiaohong Yan
Summary: The study successfully increased the energy absorption and photothermal conversion efficiency of photothermal materials by introducing a gradient refractive index structure, preparing a new type of photothermal composite material, and demonstrating its significant heating effect under laser irradiation.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Min She, Yanyan Bu, Xiangfu Wang
Summary: This study focused on the fabrication of multilayer gradient index fluorescent glass film to encapsulate blue chip, controlling the refractive index of glass from 1.60 to 1.83, effectively improving the luminous efficiency of WLED.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Computer Science, Information Systems
Shihong Liang, Bin Wang, Xiangfu Wang, Xiaohong Yan
Summary: In this work, a new type of far-red LED was fabricated for plant growth by encapsulating the Sr3LiSbO6:Mn4+, Mg2+ far-red phosphors with the gradient-refractive glass films. The internal quantum efficiency (IQE) of the LED was 93.6%. Compared with the luminous efficacy of traditional (fluorescent silicone) LEDs (59 lm/W), the luminous efficacy of the new LED is increased by 62.7%, and reaches 96.74 lm/W. Thus, this far-red LED with high IQE has a long-term application prospect in plant growth.
Article
Chemistry, Physical
Chenxu Zhao, Huan Wang, Yanyan Bu, Hui Zou, Xiangfu Wang
Summary: This paper introduces the absorption mechanism and design directions of metamaterial perfect absorbers (MPAs), highlighting equivalent impedance matching, plasma resonance, and interference effect as the main absorption mechanisms. The design aspects of MPAs include multiband absorption, ultra-wideband and ultra-narrowband absorption, polarization and angle insensitive absorption, and dynamically controllable tunable absorption.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Review
Materials Science, Multidisciplinary
Junwen Yu, Quanwang Niu, Yun Liu, Yanyan Bu, Hui Zou, Xiangfu Wang
Summary: This paper reviews the principles, performance improvement, and sensor applications of mechanoluminescence (ML) materials. ML materials have been widely used in various fields due to their high repeatability, visual response to mechanical parameters, and fast response time. The principles of ML include trap-controlled ML, piezoelectric-induced ML, triboelectricity-induced ML, and molecular stacking ML. The performance improvement of ML materials mainly focuses on ultrasonic induction, persistence, color regulation, improved sensitivity, etc.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Physical
Xiangfu Wang, Jintang Xu, Jihong Yu, Yanyan Bu, Jose Marques-Hueso, Xiaohong Yan
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2020)
Article
Chemistry, Physical
Xiangfu Wang, Min She, Wenqin Gu, Yanyan Bu, Xiaohong Yan
Summary: Heterostructure phosphor composites have wide applications in various fields, with metal/fluorophore heterostructure composites showing significant enhancement in up-conversion efficiency. By reviewing their structures, plasmon-enhanced luminescence mechanism, and specific applications, the research results and challenges are summarized.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Physical
Sergey Yu. Ketkov, Sheng-Yuan Tzeng, Elena A. Rychagova, Anton N. Lukoyanov, Wen-Bih Tzeng
Summary: Metallocenes, including methylcobaltocene, play important roles in various fields of chemistry. The ionization energy and vibrational structure of (Cp ')(Cp)Co can be influenced by introducing methyl substituents. The mass-analyzed threshold ionization spectrum and DFT calculations provide accurate information about the properties and transformations of (Cp ')(Cp)Co.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Review
Chemistry, Physical
Qifeng Mu, Jian Hu
Summary: Polymer mechanochemistry has experienced a renaissance due to the rapid development of mechanophores and principles governing mechanochemical transduction or material strengthening. It has not only provided fundamental guidelines for converting mechanical energy into chemical output, but also found applications in engineering and smart devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Da Hye Yang, Francesco Ricci, Fredrik L. Nordstrom, Na Li
Summary: Through systematic evaluation of the oiling-out behavior of procaine, we identified both stable and metastable liquid-liquid phase separation, and established phase diagrams to assist in rational selection of crystallization strategies.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Vikki Anand Varma, Simmie Jaglan, Mohd Yasir Khan, Sujin B. Babu
Summary: Designing engineering structures like nanocages, shells, and containers through self-assembly of colloids is a challenging problem. This work proposes a simple model for the subunit, which leads to the formation of monodispersed spherical cages or containers. The model with only one control parameter can be used to design cages with the desired radius.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Hainan Jiang, Yaolong He, Xiaolin Li, Zhiyao Jin, Huijie Yu, Dawei Li
Summary: The cycling lifespan and coulombic efficiency of lithium-ion batteries are crucial for high C-rate applications. The Li-ion concentration plays a crucial role in determining the mechanical integrity and structural stability of electrodes. This study focuses on graphite as the working electrode and establishes an experimental system to investigate the mechanical properties of composite graphite electrode at different C-rates. Considering the effect of Li-ion concentration in stress analysis is found to be significant.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Zhiye Wang, Yunchuan Li, Mingjun Sun
Summary: This study investigates the influence of intramolecular pi-pi interactions on the electronic transport capabilities of molecules. By designing and analyzing three pi-conjugated molecules, the researchers observe that different pi-conjugated structures have varying effects on electron transport. The findings provide a theoretical foundation for designing single-molecule electronic devices with multiple electron channels based on intramolecular pi-pi interactions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Yuandong Xu, Haoyang Feng, Chaoyang Dong, Yuqing Yang, Meng Zhou, Yajun Wei, Hui Guo, Yaqing Wei, Jishan Su, Yingying Ben, Xia Zhang
Summary: Hollow MoS2 cubes and spheres were successfully synthesized using a one-step hydrothermal method with the hard template method. The hollow MoS2 cubes exhibited higher specific capacitance and energy density compared to the hollow MoS2 spheres. The symmetrical supercapacitors assembled with these hollow structures showed good performance and high capacity retention after multiple cycles. These findings suggest that controlling the pore structure and surface characteristics of MoS2 is crucial for enhancing its electrochemical properties.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Ainhoa Oliden-Sanchez, Rebeca Sola-Llano, Joaquin Perez-Pariente, Luis Gomez-Hortiguela, Virginia Martinez-Martinez
Summary: The combination of photoactive molecules and inorganic structures is important for the development of advanced materials in optics. In this study, bulky dyes were successfully encapsulated in a zeolitic framework, resulting in emission throughout the visible spectrum.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Miaomiao Zhang, Cunyuan Pei, Qiqi Xiang, Lintao Liu, Zhongxu Dai, Huijuan Ma, Shibing Ni
Summary: The design of a solid electrolyte interphase (SEI) plays a crucial role in improving the electrochemical performance of anode materials. In this study, lithium difluoro(oxalate)borate (LiDFOB) is used as an electrolyte additive to form a protective SEI film on Li3VO4 (LVO) anodes. The addition of LiDFOB results in a dense, uniform, stable, and LiF-richer SEI, which enhances the Li-ion storage kinetics. The generated SEI also prevents further decomposition of the electrolyte and maintains the morphology of LVO anodes during charge/discharge processes. This work demonstrates the effectiveness of LiDFOB as a multi-functional additive for LiPF6 electrolytes and provides insights into SEI construction for high-performance LVO anodes.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
B. V. Andryushechkin, T. V. Pavlova, V. M. Shevlyuga
Summary: The atomic structure of the Ag(111)-p(4 x 4)-O phase was reexamined and two phases with the same periodicity were discovered. It was demonstrated that the accepted Ag6 model is incompatible with high-resolution oxygen-sensitive STM images.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
S. L. Romo-Avila, D. Marquez-Ruiz, R. A. Guirado-Lopez
Summary: In this study, we used density functional theory (DFT) calculations to investigate the interaction between model graphene oxide (GO) nanostructures and chlorine monoxide ClO. We aimed to understand the role of this highly oxidizing species in breaking C-C bonds and forming significant holes on GO sheets. Our results showed that C-C bonds in a single graphene oxide sheet can be broken through a simple mechanism involving the dissociation of two chemically attached ClO molecules. The formation of carbonyl groups and holes on the GO surface was also observed. This study provides important insights into the degradation of carbon nanotubes and the stability of GO during the myeloperoxidase (MPO) catalytic cycle.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Alberto Garcia-Fernandez, Birgit Kammlander, Stefania Riva, Hakan Rensmo, Ute B. Cappel
Summary: In this study, the X-ray stability of five different lead halide perovskite compositions (MAPbI3, MAPbCl3, MAPbBr3, FAPbBr3, CsPbBr3) was investigated using photoelectron spectroscopy. Different degradation mechanisms and resistance to X-ray were observed depending on the crystal composition. Overall, perovskite compositions based on the MA+ cation were found to be less stable than those based on FA+ or Cs+. Metallic lead formation was most easily observed in the chloride perovskite, followed by bromide, and very little in MAPbI3. Multiple degradation processes were identified for the bromide compositions, including ion migration, formation of volatile and solid products, as well as metallic lead. CsBr was formed as a solid degradation product on the surface of CsPbBr3.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Timofei Rostilov, Vadim Ziborov, Alexander Dolgoborodov, Mikhail Kuskov
Summary: The shock-loading behavior of nanomaterials is investigated in this study. It is found that shock compaction waves exhibit a distinct two-step structure, with the formation of faster precursor waves that travel ahead of the main compaction waves. The complexity of the shock Hugoniot curve of the tested nanomaterial is described, and the effect of initial porosity on the compressed states is demonstrated.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Sergey S. Nikitin, Alexander D. Koryakov, Elizaveta A. Antipinskaya, Alexey A. Markov, Mikhail V. Patrakeev
Summary: The stability of La1/3Sr2/3Fe1-xMnxO3-delta, a perovskite-type oxide, under reducing conditions is dependent on the manganese content. Increasing the manganese content leads to a decrease in stability. The behavior of iron and manganese in the oxide shows distinct differences, which can be attributed to the difference in the enthalpy of oxidation reactions. Additionally, the change in the La/Sr ratio affects the concentration of iron and manganese ions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Mosayeb Naseri, Shirin Amirian, Mehrdad Faraji, Mohammad Abdur Rashid, Maicon Pierre Lourenco, Venkataraman Thangadurai, D. R. Salahub
Summary: Inspired by the successful transfer of freestanding ultrathin films of SrTiO3 and BiFeO3, this study assessed the structural stability and investigated the electronic, optical, and thermoelectric properties of a group of two-dimensional perovskite-type materials called perovskenes. The findings revealed that these materials are wide bandgap semiconductors with potential application in UV shielding. Moreover, they exhibit better electrical and thermal conductivity at high temperatures, enabling efficient power generation in thermoelectric devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)