Review
Chemistry, Inorganic & Nuclear
Xiang Zheng, Ranjith Kumar Kankala, Chen-Guang Liu, Shi-Bin Wang, Ai-Zheng Chen, Yong Zhang
Summary: In the past few decades, significant progress has been made in the fabrication of various nanomaterials, particularly in the area of lanthanide-doped upconversion nanocrystals (UCNCs) due to their unique optical properties. However, there is still insufficient understanding of the chemistry behind UCNCs, which plays a crucial role in regulating their luminescent behavior. Further elucidation of UCNC chemistry is necessary for promoting their development and future applications.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Engineering, Environmental
Aliya Tiemuer, Hui Yu, Chao Zhao, Wanlu Sun, Yuanyuan Zhang, Yiming Jiang, Yueqing Gu, Yi Liu
Summary: Gas therapy, particularly utilizing NO gas transmitter, has shown promise for effective cancer treatment. This study focused on addressing the drawbacks of current NO prodrugs, developing NIR light-triggered NO-releasing donors with superb spatiotemporal controllability for efficient NO delivery and real-time drug monitoring. The use of frequency upconversion luminescence (FUCL) readout for imaging provides high sensitivity and resolution, making it a potential breakthrough in deep-seated tumor therapy.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Analytical
Yi Xiang, Shanshan Zheng, Shanshan Yuan, Jing Wang, Yihan Wu, Xiaohui Zhu
Summary: In this study, photoswitchable upconversion nanoparticles (UCNPs) that can release orthogonal emissions under two near-infrared light excitations were reported. The accuracy of upconversion luminescence signals under different excitation lights was verified using Pearson's correlation analysis. A near-infrared mediated bioimaging nanoplatform was designed to generate reactive oxygen species (ROS) and track the location of upconversion photosensitizers simultaneously. The study not only depicts the migration pathway of upconversion photosensitizers but also demonstrates the organelle escape of these nanoparticles via photochemical internalization (PCI) process.
Article
Chemistry, Multidisciplinary
Xiao-Fang Duan, Li-Peng Zhou, Hao-Ran Li, Shao-Jun Hu, Wei Zheng, Xin Xu, Ruiling Zhang, Xueyuan Chen, Xiao-Qing Guo, Qing-Fu Sun
Summary: Upconversion is a promising anti-Stokes-like optical process with potential applications in diverse fields. However, current known mechanisms for upconversion are mainly based on direct energy transfer between metal ions, which limits the design and tunability of the structures and properties. By synthesizing lanthanide-organic complexes with assembly induced excited-multimer states, we demonstrate a new strategy for designing upconversion materials that is crucial for exploiting the photofunctions of multicomponent lanthanide-organic complexes.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Analytical
Tingting Peng, Rui Pu, Baoju Wang, Zhimin Zhu, Kai Liu, Fan Wang, Wei Wei, Haichun Liu, Qiuqiang Zhan
Summary: The study systematically investigated the emission characteristics of Tm3+-doped nanoparticles under laser excitations of different near-infrared-II wavelengths. It was found that 1150 nm laser excitation enables intense three-photon 475 nm emission, and the luminescence brightness was optimized resulting in a ten-fold increase in emission intensity, showcasing potential applications of thulium-doped upconversion nanoparticles.
Article
Chemistry, Multidisciplinary
Xingzhong Chen, Yang Li, Kai Huang, Ling Huang, Xiumei Tian, Huafeng Dong, Ru Kang, Yihua Hu, Jianmin Nie, Jianrong Qiu, Gang Han
Summary: A new type of persistent luminescence phosphors and nanoparticles that can be charged via deep-tissue penetrable near-infrared (NIR) light for regenerating light emission signals have been reported. These materials enable the reverse transition of carriers, allowing for circular charging using low-energy NIR photons and emitting afterglow signals, setting the stage for new biological applications.
ADVANCED MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Thomas P. van Swieten, Tijn van Omme, Dave J. van den Heuvel, Sander J. W. Vonk, Ronald G. Spruit, Florian Meirer, H. Hugo Perez Garza, Bert M. Weckhuysen, Andries Meijerink, Freddy T. Rabouw, Robin G. Geitenbeek
Summary: This study demonstrates high spatial resolution nanothermometry at elevated temperatures using chemically stable upconversion nanoparticles and confocal microscopy. Distortions in the luminescence spectra, intrinsic to samples with nanoscale photonic inhomogeneities, are corrected to extend the range of high-resolution nanothermometry beyond 500 K with a precision of 1-4 K. This work will improve the accuracy of nanothermometry not only in micro- and nanoelectronics, but also in other fields with photonically inhomogeneous substrates.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Analytical
Hongqi Chen, Wanying Xia, Qian Gao, Lun Wang
Summary: A fast and efficient quantitative image analysis method has been developed for the determination of HSO3- concentration, using upconversion nanoparticles and cyanine dye molecules to build a luminescence energy transfer system. The method significantly reduces sample consumption, allows for quick and efficient analysis, and shows a wider linear range, lower detection limit, and higher detection speed compared to the classical luminescence spectrometer.
Article
Chemistry, Multidisciplinary
Alexandra Schroter, Thomas Hirsch
Summary: Near-infrared light combined with lanthanide-based nanoparticles has great potential for diagnostic and therapeutic applications in biomedicine. Significant progress has been made in the synthesis of nanoparticles with complex architectures. This article provides an overview of recent design trends, highlights past achievements, and outlines potential future directions in upconversion research.
Article
Chemistry, Multidisciplinary
Hanyu Liang, Kaidong Yang, Yating Yang, Zhongzhu Hong, Shihua Li, Qiushui Chen, Juan Li, Xiaorong Song, Huanghao Yang
Summary: This study reports a strategy for in situ temperature mapping on an immune cell membrane using lanthanide-doped upconversion nanoparticles. The strategy enables precise monitoring of localized temperature status in living cells and visualization of intracellular calcium influx. It allows identification of a suitable temperature status for efficient activation of immune cells.
Article
Chemistry, Multidisciplinary
Alexandra Schroter, Susanne Maerkl, Naomi Weitzel, Thomas Hirsch
Summary: This article investigates the advantages of lanthanide-doped upconversion nanoparticles (UCNPs) in biological applications and presents an enhancement strategy to increase their upconversion efficiency. By increasing the sensitizer content and blocking energy migration pathways, small and bright UCNPs can be designed.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Haohang Xu, Zhaoyu Chen, Yu Zhao, Jingwei Guo, Wanfa Liu, Xianjie Wang, Mingxue Huo, Yu Sui
Summary: Rare earth pyrosilicate C-Er2Si2O7 ceramics synthesized by the conventional solid-state reaction method exhibit strong photoluminescence properties at room temperature, making them a potential material for color display, and also show near-infrared upconversion emission in the first biological window, indicating their potential use in the in vivo field.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Applied
Ya'nan Ji, Donglei Zhou, Nan Wang, Nan Ding, Wen Xu, Hongwei Song
Summary: In this study, we designed and synthesized core-shell upconversion nanoparticles and combined them with photonic crystals to fabricate flexible narrowband near-infrared photodetectors. The detectors displayed enhanced upconversion luminescence and excellent detection performance for 808 and 980nm light. They also exhibited low photodetection power threshold, flexibility, moisture resistance, and long-time stability.
JOURNAL OF RARE EARTHS
(2022)
Article
Chemistry, Multidisciplinary
Youxin Fu, Kefan Wu, Georgios Alachouzos, Nadja A. Simeth, Thomas Freese, Michal Falkowski, Wiktor Szymanski, Hong Zhang, Ben L. Feringa
Summary: Photoclick reactions combine the selectivity of classical click chemistry with the precision and control of light. A reliable and versatile strategy using near infrared light and upconversion nanoparticles was introduced to activate the reactions. Successful in vivo applications were demonstrated through tissue penetration.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Keyao Chen, Yu Xiong, Deliang Wang, Yiwen Pan, Zheng Zhao, Dong Wang, Ben Zhong Tang
Summary: In this study, polymer-based room-temperature phosphorescence (RTP) materials were developed with ultralong lifetime, wide color-tunability, and persistent near-infrared (NIR) luminescence through non-traditional phosphorescence resonance energy transfer (PRET) and two-step sequential resonance energy transfer systems. These water-soluble polymeric afterglow materials show great potential applications in advanced anti-counterfeiting and information security technologies.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Public, Environmental & Occupational Health
Yanxiao Ren, Jianfeng Cai, Ho Cheung, Hongyu Shao, Kunwa Au, Tszpong Chow, Weijia Wen, Li Ling, Shuyu Chen
Summary: This study proposed a low-cost and easy-to-operate testing protocol to evaluate the long-term antimicrobial performance of a novel WOx paint. The analysis of microbial activity on walls with and without the WOx paint showed that the WOx paint demonstrated effective reduction of microbial activities in the long-term.
AMERICAN JOURNAL OF INFECTION CONTROL
(2022)
Article
Instruments & Instrumentation
Hanqi Xu, Jinbo Wu, Yaying Hong, Weijia Wen
Summary: This study demonstrates the impact of diester structure, specifically alkyl chain length and branching structure, on the giant electrorheological (GER) effect and suspension stability. The results show that longer chain lengths facilitate the formation of particle agglomerates, while the attachment of branches improves GER performance and suspension stability.
SMART MATERIALS AND STRUCTURES
(2022)
Article
Biology
Beini Zhang, Zhentao Zhou, Wenbin Cao, Xirui Qi, Chen Xu, Weijia Wen
Summary: This study proposes a few-shot learning bacterial colony detection method based on edge computing devices, which achieves high detection accuracy with minimal training data. Compared to traditional methods, this approach significantly improves accuracy, reduces costs, and lowers equipment requirements.
Article
Biochemical Research Methods
Beini Zhang, Yiteng Liu, Qi Song, Bo Li, Xuee Chen, Xiao Luo, Weijia Wen
Summary: The paper proposed a novel image analysis method DIPLOID, which could recognize and subtract the interference using Mask R-CNN, and select the maximum valid contiguous area for brightness analysis through dynamic programming. Compared with the traditional method, DIPLOID increased the accuracy, sensitivity, and specificity significantly.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2022)
Article
Optics
Wang Luo, Xintong Zhang, Kaofeng Huang, Bohan Wang, Yu Wang, Zhilie Tang, Kezhi Zheng
Summary: A newly X-ray-excited long afterglow phosphor CaZnOS:Tb3+ has been developed using lithium-assisted synthetic protocol. The afterglow properties of Tb3+-doped CaZnOS microcrystals were systematically investigated by considering factors such as dopant concentration, reaction temperature, reaction time, reaction atmosphere, and gas flow. The results showed that increasing the argon gas flow from 0.05 to 0.5 L/min led to a gradual increase in afterglow time, which was attributed to the change in trap depth. The study also discussed the long afterglow mechanism and provided a fundamental design principle and new route for the creation of lanthanide-doped CaZnOS afterglow phosphors.
JOURNAL OF LUMINESCENCE
(2023)
Article
Chemistry, Physical
Hui Li, Yanfeng Zhong, Shumin Wang, Menglei Zha, Wenxing Gu, Guoyong Liu, Bohan Wang, Zhendong Yu, Yu Wang, Kai Li, Yuxin Yin, Jing Mu, Xiaoyuan Chen
Summary: The use of tumor-derived extracellular vesicles (EVs) as a targeting approach in combination with ternary downconversion nanoparticles (DCNPs) improves tumor imaging and accumulation. Bioorthogonal labeling of NIR-II optical probes with EVs enhances luminescence signals and prolongs retention at tumor sites.
Article
Materials Science, Multidisciplinary
Jingheng Nie, Bo Zhou, Shaofan Fang, Ye Wang, Yu Wang, Bingbing Tian, Hanlin Hu, Haizhe Zhong, Henan Li, Yumeng Shi
Summary: Metal halide perovskites (MHPs) are emerging semiconducting materials with exceptional opto-electronic properties. The exciton emission mechanism in MHPs is still not well understood due to their diverse chemical composition and versatile lattice structure. This review provides a critical overview of the experimental and theoretical approaches used to determine the exciton emission mechanism and summarizes the strategies for achieving efficient light emission in MHPs.
MATERIALS TODAY PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Zhihao Wang, Bohan Wang, Xiping Zeng, Dengfeng Peng, Yu Wang
Summary: The substantial enhancement of multimode luminescence, including mechanoluminescence, photoluminescence, and X-ray excited optical luminescence, of Mn2+ and Tb3+ in zinc calcium oxysulfide (CaZnOS) is achieved by increasing the concentration of oxygen vacancies (OVs). It was found that CaZnOS lattice has a tolerance of 60% for Sr2+ substitution. The lattice distortion caused by Sr2+ incorporation can efficiently promote the elimination of oxygen and produce more OVs, leading to stronger luminescence.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xintong Zhang, Haiyi Qiu, Wang Luo, Kaofeng Huang, Ying Chen, Jiacheng Zhang, Bohan Wang, Daoling Peng, Yu Wang, Kezhi Zheng
Summary: Organic scintillators have low radioluminescence and inorganic scintillators are too bulky for flexible detectors. This study demonstrates high-resolution X-ray imaging using solution-processable lanthanide-based metal-organic frameworks as microscale scintillators. By controlling the concentration ratio between Tb3+ and Eu3+ ions, efficient and color-tunable radioluminescence of lanthanide ions can be achieved. These metal-organic framework-based microscintillators allow the fabrication of flexible X-ray detectors with a detection limit of 23 nGy s(-1) and resolution higher than 16.6 line pairs per millimeter.
Article
Chemistry, Multidisciplinary
Zutao Fan, Xiangyang Fan, Junpeng Xue, Yu Wang
Summary: This study synthesized Bi3+ and Eu3+ co-doped CLTO phosphors, confirmed the crystal structures of different cations in various coordination environments by XRD, XPS, and DRS, and investigated the morphology of the samples in detail using SEM and TEM techniques. The energy transfer efficiency from Bi3+ to Eu3+ ions in the CLTO host is as high as 100%. A dual-mode optical thermometer based on FIR technology was designed, which has high temperature sensitivity and signal discriminability.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Physical
Huangqing Ye, Jiahui Chen, Songrui Wei, Yougen Hu, Yu Wang, Xian-Zhu Fu, Rong Sun
Summary: Copper/carbon (Cu/C) hybrids with 2D dendritic-like structure were synthesized by a one-pot biological hydrothermal method. The method involved using biomass as the reducing agent, capping agent, and template. The Cu/C hybrids exhibited excellent oxidation resistance and electrical conductivity due to their 2D structure and graphitic carbon coating layer, making them promising as conductive adhesive fillers in flexible electronics.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Inorganic & Nuclear
Huangqing Ye, Jiahui Chen, Yougen Hu, Yunming Li, Yu Wang, Xian-Zhu Fu, Rong Sun
Summary: Two-dimensional copper sheets were used as a catalyst and bridge to enhance the electrical and thermal conductivity of graphene films produced through thermal reduction of graphene oxide nanosheets. The addition of copper sheets in the composite films increased the electrical conductivity by 3 times and the thermal conductivity by 64.9%. The copper sheets acted as a catalyst to improve the graphitization degree of reduced graphene oxide, and also facilitated the interconnection of electrical and thermal conduction paths in the composite films due to the excellent electrical and thermal conductivity of copper. The enhanced graphene composite film showed potential applications in heat management for electronics.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Jiangcheng Luo, Biyun Ren, Xianhui Zhang, Mingju Zhu, Tianlong Liang, Zefeng Huang, Yuantian Zheng, Xu Li, Jianwei Li, Zitong Zheng, Bing Chen, Yu Fu, Dong Tu, Yu Wang, Yanmin Jia, Dengfeng Peng
Summary: Mechanoluminescence and long afterglow properties of Sr2MgSi2O7(SMSO) singly doped and codoped with Eu2+ and Dy3+ ions are thoroughly investigated in this study. Comprehensive analysis of its multimode luminescence properties is conducted, including photoluminescence, mechanoluminescence, long afterglow, and X-ray-induced luminescence. First-principles calculations confirm that the enhanced mechanoluminescence properties of SMSO primarily derive from the deep trap introduced by Dy3+. In contrast to traditional mixing, this study incorporates the powders into optically transparent wood, achieving a multiresponse with mechanoluminescence, long afterglow, and X-ray-excited luminescence.
Article
Chemistry, Physical
Hui Li, Yanfeng Zhong, Shumin Wang, Menglei Zha, Wenxing Gu, Guoyong Liu, Bohan Wang, Zhendong Yu, Yu Wang, Kai Li, Yuxin Yin, Jing Mu, Xiaoyuan Chen
Summary: This study proposes a bioorthogonal approach mediated by extracellular vesicles (EVs) derived from tumors to improve in vivo tumor imaging. By labeling ternary downconversion nanoparticles (DCNPs) with strong near infrared II (NIR-II) luminescence using EVs metabolically engineered with azide groups, remarkable improvement in tumor accumulation was achieved compared to passive targeting. This bioorthogonal labeling significantly increased NIR-II luminescence signals and prolonged retention at tumor sites.
Article
Chemistry, Multidisciplinary
Bohan Wang, Zhihao Wang, Peng Mao, Yu Wang
Summary: In this study, a series of beta-NaYF4:RE3+ (RE = Sm, Tb, Dy, Pr) persistent luminescent phosphors with multi-color emitting and ultra-long persistent luminescence were reported. The effects of doping concentrations of RE3+ on the size, morphology, radioluminescence and afterglow performance of the products were investigated. The hexagonal structured rod-like beta-NaYF4:Tb3+ crystals showed super strong X-ray response and the afterglow signal lasted for up to seven days. The results of this study can be used for the design of dynamic anti-counterfeiting patterns containing rich time-resolved information.
