Article
Optics
Mengjun Li, Liangbi Su, Xueyuan Chen, Qiang Wu, Bo Zhang
Summary: In this study, Yb-Er co-doped CaF2 crystals with different Yb3+ ion concentrations were successfully grown. The up-conversion luminescence characteristics and optical temperature sensing behavior were investigated. By adjusting the content of Yb3+ ions, multi-color visible light emissions could be obtained. The concentration of Yb3+ ions significantly influenced the temperature sensing performance, and the maximum sensitivity was achieved at a 5 at.% doping concentration of Yb3+ ions.
OPTICS COMMUNICATIONS
(2022)
Article
Spectroscopy
Zhipeng Guan, Xiangping Li, Rensheng Shen, Zhuang Tian, Hongquan Yu, Yongze Cao, Yichao Wang, Jinsu Zhang, Sai Xu, Baojiu Chen
Summary: In this study, intense red and weak green up-conversion luminescence were achieved in BaGd2O4: Yb3+/Er3+ phosphors under the excitations of 980 nm and 1550 nm. The UC luminescence mechanisms were discussed and the energy transfer efficiency was determined. The phosphors also demonstrated potential for temperature sensing with maximum sensitivities obtained.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Physical
Jun Zhao, Gencai Pan, Kunlun Liu, Wenwu You, Suyue Jin, Yaxian Zhu, Huiping Gao, Huafang Zhang, Yanli Mao
Summary: Lead-free halide double perovskites with doped Er3+ ions exhibit efficient up-conversion and down-shifting emissions. The color of down-shifting luminescence can be controlled by increasing Er3+ ion doping concentration, while near-infrared light suitable for optical communication is emitted with the highest photoluminescence quantum yield reaching 38.36%. The rare earth ions doping in double perovskites shows promising potential for new functionalities in optoelectronic applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Optics
Patrick Pues, Michael Laube, Stefan Fischer, Franziska Schroeder, Sebastian Schwung, Daniel Rytz, Torben Fiehler, Ulrich Wittrock, Thomas Juestel
Summary: This work explores the spectroscopic properties of praseodymium doped single crystalline lutetium aluminum garnet, focusing on temperature- and time-dependent spectroscopy. It discovered UV-A/B up-conversion luminescence and proposed a temperature-dependent energy transfer up-conversion mechanism.
JOURNAL OF LUMINESCENCE
(2021)
Article
Crystallography
Danni Huang, Tong Xiao, Beibei Fu, Shoulei Xu, Yuyang Huang, Wen Deng, Zhukun Zhou
Summary: In this study, highly transparent Tm2O3 and Yb2O3 co-doped yttria stabilized zirconia (YSZ) single crystals were grown using the optical floating zone method. It was found that the Yb/Tm: YSZ samples, with Yb3+ and Tm3+ replacing Y3+, were stabilized in the cubic phase at room temperature. The influence of Yb3+ co-doping on the up-conversion luminescence properties of the crystals was systematically studied, and it was determined that a 2.0Yb/Tm: YSZ single crystal, with 0.5 mol% Tm2O3 and 2.0 mol% Yb2O3 co-activation, exhibited the highest luminous intensity.
Article
Chemistry, Physical
Cao T. M. Dung, Le T. T. Giang, Do Huy Binh, Le Van Hieu, Tran T. T. Van
Summary: Er3+/Yb3+ co-doped SiO2-SnO2 glass-ceramics were synthesized using the sol-gel method, and their structure and fluorescence properties were confirmed through various analyses. These glass-ceramics exhibit good down and up-conversion luminescent properties, with a proposed fluorescence mechanism.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Metallurgy & Metallurgical Engineering
Hao-tian Zhu, Hai-rui Guo, Qi-jing Zheng, Chun-yan Guan, Li-ping Zhu, Hai-bin LI, Jin-yu Yang
Summary: Ho3+ and Yb3+ co-doped La7P3O18 up-conversion phosphors were prepared via high-temperature solid-state process. The samples showed a mixture of monoclinic structure La7P3O18 crystals and minor LaPO4 crystals according to XRD analysis. UV-Vis DRS results revealed that La7P3O18 crystal was an indirect semiconductor with an optical band gap of 4.10 eV. Upon excitation at 980 nm, the Ho3+ and Yb3+ co-doped La7P3O18 phosphors exhibited characteristic blue (486 nm), green (550 nm), and red (661 nm) luminescence peaks of Ho3+ ions. The 661 nm peak dominated the up-conversion luminescence spectra. The intensity of up-conversion luminescence initially increased and then decreased with the increase of Ho3+ and Yb3+ doping content. Concentration quenching may occur at Ho3+ and Yb3+ doping contents of 1 at.% and 10 at.%, respectively, through an electric quadrupole-electric quadrupole interaction process. The pumping power dependence of luminescence indicated a two-photon absorption process for the excitation of green and red emissions. The color coordinates of the Ho3+ and Yb3+ co-doped La7P3O18 crystals were located in the orange-red region.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2023)
Article
Chemistry, Physical
Linghui Shen, Tong Wei, Yongchao Shi, Hanyu Hao, Si Chen, Jiaguang Chen, Hao Guan, Qingjun Zhou, Zepeng Li
Summary: This study introduced a smart phosphor material that can reversibly regulate up-conversion luminescence under visible light irradiation, causing coloration and decoloration processes. The intensity of luminescence can be altered by alternating light irradiation and heating treatment, while polarization treatment can enhance the contrast of up-conversion luminescence.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Wei Long, Feifei Guo, Pinyang Fang, Aiguo He, Xiaojuan Li, Zengzhe Xi
Summary: In this study, an Er-doped Pb(Mg1/3Nb2/3)O-3-PbTiO3 single crystal with a large size was successfully grown using the modified Bridgman technique. The temperature dependent phase structure, domain configuration, and electromechanical properties of the single crystal were investigated. The results showed that the single crystal exhibited a coexistence of rhombohedral (R) and monoclinic (M) phases at room temperature, with the M phase dominating. The piezoelectric constant d(33) and coupling factor k(33) increased with the temperature. The increase in d(33) was attributed to the increase in dielectric constant due to easier polarization rotation and domain wall movement at elevated temperatures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Zhichao Zhang, Fangnan Liang, Xuerui You, Kun Zhou, Qianxiu Liu, Chunping Liang, Haocheng Zhao
Summary: The study shows that bright white luminescence can be obtained by adjusting the doped concentrations of Tm3+ ions. In addition, by studying the UC mechanisms, important references can be provided for the application of LiGaW2O8:Tm3+,Ho3+,Yb3+ in the fields of three-dimensional displays, solid-state lighting, and backlighting.
Review
Chemistry, Multidisciplinary
Danyang Xu, Chenxu Li, Wenjing Li, Bi Lin, Ruichan Lv
Summary: This article reviews the latest developments in the synthesis and application of lanthanide-doped up-conversion nanoparticles (Ln-UCNPs). The methods used to synthesize Ln-UCNPs are introduced, followed by an analysis of four strategies for enhancing up-conversion luminescence. The applications in phototherapy, bioimaging, and biosensing are overviewed, and the challenges and future prospects of Ln-UCNPs are summarized.
FRONTIERS IN CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Wenxia Wu, Daini Wang, Yihua Pan, Yuhua Yang, Peng Zhang, Shoulei Xu, Bernard A. Goodman, Wen Deng
Summary: Yttria stabilized zirconia (YSZ) single crystals doped with Tm2O3, Ho2O3, and Yb2O3 were studied for their luminescence properties. The Tm3+ content was found to affect the blue emission peaks, reaching a maximum at 0.30 mol% Tm2O3. The competition between Ho3+ and Tm3+ for energy transfer and the direct transfer of energy from Ho3+ to Tm3+ were observed. The results demonstrate the potential for fine-tuning the luminescence properties of YSZ crystals through energy transfer processes between different rare earth ions.
Article
Materials Science, Ceramics
Yin Zhang, Wei Zhu, Hao Xu, Yubo Wu, Yuhan Zou
Summary: 24ZnF2-(47-x)B2O3-18Bi2O3-10ZnO-xEr2O3-1Yb2O3 (FBZEY) fluorine bismuth borate glass with good thermal stability was prepared. The effect of doped rare earth ions on the glass structure was studied using infrared spectroscopy. High energy emission photons can be obtained by low energy excitation sources. Fluorescence decay analysis showed that the fluorescence lifetime increased with the concentration of doped rare earth ions.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Materials Science, Ceramics
Xinmin Yu, Chunhui Su, Qianwen Wang, Wuyunga Bao, Tong Wang, Hongbo Zhang, Xiangyu Zou
Summary: Tb3+-Yb3+ co-doped transparent glass ceramics (GCs) containing Y2Ti2O7 crystal phases were synthesized by melt crystallization. The light transmittance of the GCs reached 78% in the visible region, with an average grain size of 278 nm under the optimal heat treatment conditions (720 degrees C/2 h). The up-conversion luminescence intensity of the GCs was significantly enhanced compared to the precursor glass, and this enhancement was attributed to the change in the Y2Ti2O7 crystal lattice caused by Li+ doping. The introduction of Li+ did not alter the crystalline phase, and the resulting transparent GCs could be used for green up-conversion applications.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Ali F. Garcia Flores, Julian Munevar, Marcos de Oliveira, Carlos Rettori, Ricardo R. Urbano, Thiago B. de Queiroz
Summary: NaYF4 nanoparticles are potential hosts for lanthanides in applications such as upconversion and photodynamic therapy. This study utilizes high-resolution techniques and nuclear magnetic resonance measurements to address the challenges posed by dipolar or quadrupolar interactions and site heterogeneity in spin systems.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Zijie Lu, JiaYu Gao, Chao Fang, Yi Zhou, Xiang Li, Gaorong Han
Article
Chemistry, Multidisciplinary
Qiang Chu, Linhua Liao, Bin Liu, Gaorong Han, Xiang Li
Summary: This study synthesized composite nanosheets with controllable SO2 gas release capability, which can induce oxidative damages to tumor cells by utilizing the glycolysis effect of GOx. At the same time, the nanosheets deplete the energy supply of tumor cells, effectively inhibiting tumor growth both in vitro and in vivo in a synergistic manner.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Hanjing Kong, Qiang Chu, Chao Fang, Guodong Cao, Gaorong Han, Xiang Li
Summary: The study successfully designed and synthesized fine CaO2 nanoparticles with Cu-ferrocene molecules on the surface, which release Ca2+ ions and H2O2 under acidic conditions and promote the production of (OH)-O-center dot. The enhanced (OH)-O-center dot induction and intracellular calcium overload contribute significantly to antitumor effects in vitro and in vivo.
Article
Materials Science, Biomaterials
Tong Chen, Yike Fu, Ruoyu Zhang, Gaorong Han, Xiang Li
Summary: Electrodynamic therapy using platinum nanoparticles for tumor treatment generates ROS under an electric field, with increased chloride ion concentration being beneficial for ROS production. The combination of potassium chloride nanocrystals, amorphous calcium carbonate nanoclusters, and platinum nanoparticles can enhance intracellular ROS generation and lead to agitated tumor inhibition through a cycle of mutual promotion and self-amplification between excessive calcium ions and ROS.
BIOMATERIALS SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Peipei Zhu, Cheng Zhou, Jiafei Chen, Qiang Chu, Feiyu Li, Yike Fu, Xiang Li
Summary: The combination of precise tumor depletion and immunotherapy has great potential to eradicate cancer. In this study, anaerobic bacteria were integrated with ZnAl layered double hydroxides (LDHs) to construct an effective system for inhibiting tumor growth and metastasis. The biohybrid P. acnes@LDHs demonstrated remarkable anticancer outcomes in both in vitro and in vivo experiments.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Zijie Lu, Linming Zhou, Yingpei Yao, Feiyu Li, Zijian Hong, Yongjun Wu, Xiang Li
Summary: Electrodynamic therapy (EDT) is an emerging alternative approach for tumor treatment, based on the electrocatalytic activation of water dissociation on platinum nanoparticles (PtNPs) to produce hydroxyl radicals. However, the mechanism of EDT remains controversial, particularly when PtNPs are not in direct contact with electrodes. This study reveals the fundamental mechanism of EDT, identifying the crucial reactant as free chlorine generated during electrolysis. Experimental examinations and calculations confirm the catalytic activation of HOCl by PtNPs, resulting in the production of oxygen anion radicals and the corrosion of PtNPs. Cytotoxicity and intracellular abnormalities further support these findings, offering new insight into the in vitro anti-cancer mechanism of EDT.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Feiyu Li, Qiang Chu, Zefeng Hu, Zijie Lu, Chao Fang, Gaorong Han, Yike Fu, Xiang Li
Summary: A biohybrid therapeutic system combining responsive materials and living microorganisms was developed for tumor treatment, showing significant efficacy in tumor ablation and inhibition of recurrence.
Article
Nanoscience & Nanotechnology
Cheng Zhou, Jiafei Chen, Bingzhu Zheng, Peipei Zhu, Qiang Chu, Feiyu Li, Yike Fu, Xiang Li, Jun Luo
Summary: The combination of targeted therapy and immunotherapy using a biohybrid system consisting of NO3--intercalated LDH and PA shows promising results in eliminating solid tumors and inhibiting tumor metastasis.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Qiang Chu, Congkun Xie, Guodong Cao, Zefeng Hu, Feiyu Li, Yike Fu, Gaorong Han, Xiang Li
Summary: A hybrid platform, constructed via the surface armoring of living yeasts by a manganese silicate compound (MS@Yeast), is investigated for combinational cancer treatment. The intrinsic characteristics of living yeasts, in both acidophilic and anaerobic conditions, empower the hybrid platform with activated selected colonization in tumors. The integration of biologically active microorganisms and functional materials provides distinctive perspectives in the exploration of potential therapeutics for tackling cancer.
Article
Materials Science, Biomaterials
Jiafei Chen, Shiqi Wan, Yike Fu, Yi Zhou, Xiang Li, Huiming Wang
Summary: In this study, an implantable system with combined functions of tumor therapy and tissue repair was developed. The system utilized tannic acid/Fe3+ nanoparticles with Fenton catalytic activity and GSH inhibitor BSO drug to achieve amplified chemodynamic tumor treatment. Additionally, bioactive glass fibers loaded with vascular endothelial growth factor (VEGF) were used as drug carriers for tissue repair. This work is inspiring for postoperative tumor treatment and recovery.
JOURNAL OF MATERIALS CHEMISTRY B
(2023)
Article
Materials Science, Biomaterials
Xi Xiao, Bingzhu Zheng, Qiang Zheng, Zijie Lu, Dong Cen, Xiujun Cai, Xiang Li, Renren Deng
Summary: This study presents a heterostructure nanocomposite containing ZnO-coated lanthanide nanoparticles, which can efficiently generate peroxynitrite anion (ONOO-) at targeted tumor sites, thereby promoting cancer cell apoptosis and inhibiting tumor growth.
JOURNAL OF MATERIALS CHEMISTRY B
(2022)
Article
Materials Science, Biomaterials
Congkun Xie, Dong Cen, Huiyang Wang, Yifan Wang, Yongjun Wu, Gaorong Han, Xiang Li
Summary: Hierarchical manganese silicate nanoclusters modified with triphenylphosphonium disassemble in an acidic tumor microenvironment into ultrasmall nanocapsules, enabling deep tumor penetration and mitochondria targeting, exhibiting considerable antitumor effect.
BIOMATERIALS SCIENCE
(2021)
Article
Materials Science, Biomaterials
Linhua Liao, Qiang Chu, Chao Fang, Xiang Li, Gaorong Han
Summary: Fine hollow nanocapsules of NiFe hydroxides were designed and synthesized for delivering anticancer drug and tumor depletion. The system showed significant Fenton activity and pH-responsive drug release, inducing hydroxyl radicals in tumor cells to achieve remarkable antitumor properties.
BIOMATERIALS SCIENCE
(2021)
Article
Materials Science, Biomaterials
Qiang Chu, Huimin Zhu, Bin Liu, Guodong Cao, Chao Fang, Yulian Wu, Xiang Li, Gaorong Han
JOURNAL OF MATERIALS CHEMISTRY B
(2020)
Article
Materials Science, Biomaterials
Huimin Zhu, Guodong Cao, Chu Qiang, YiKe Fu, Yulian Wu, Xiang Li, Gaorong Han
BIOMATERIALS SCIENCE
(2020)
