Article
Materials Science, Multidisciplinary
Jie Chen, Chao Wang, Yu Yin, Rong Liu, Fanxu Meng, Shanshan Wang, Zhigang Liu, Shihua Yu
Summary: Intelligent regulation of energy transfer process among different rare earth ions can enhance the upconversion luminescence intensity. Wheat ears-like YF3 microrods doped with Yb3+/Er3+/(Tm3+, Ho3+) were fabricated and the UC luminescence performance dependent on Tm3+/Ho3+ doping concentrations was studied. The study provides a reference for the development of high-efficiency luminescent materials.
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
Chemistry, Multidisciplinary
Baiqi Shao, Mei Yang, Fangfu Ye
Summary: Phase engineering is crucial in nano science and technology. A new synthetic route using topotactic structural transformation was described to address the formation of intermediate phases in the growth of beta-NaYF4 nanocrystals. The study shows that topotactic structural transformation can be an efficient tool for phase engineering in modern nanomaterial science.
Article
Chemistry, Multidisciplinary
Xiaoyu Xie, Wang Wang, Haoran Chen, Run Yang, Han Wu, Dechao Gan, Bin Li, Xianggui Kong, Qiqing Li, Yulei Chang
Summary: Lanthanide-doped upconversion nanoparticles (UCNPs) with Yb3+ and Er3+ codoping and CaF2 shell were synthesized. Compared with homogeneous shell UCNPs, these heterogeneous core@shell UCNPs exhibited stronger upconversion luminescence. The UCNPs with CaF2 shells showed higher sensitivity to temperature in the range of 200-300 K, with a maximum thermal sensitivity of 2.2% K-1.
Article
Chemistry, Physical
Lucia Labrador-Paez, Uliana Kostiv, Qingyun Liu, Yuanyuan Li, Hans Agren, Jerker Widengren, Haichun Liu
Summary: This study thoroughly investigates the luminescence response of lanthanide-doped upconversion nanoparticles (UCNPs) to excitation pulse durations, and finds that it offers new possibilities in optical encoding/decoding, assignment of transitions, and improved applications of UCNPs.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Physical
Lucia Labrador-Paez, Uliana Kostiv, Qingyun Liu, Yuanyuan Li, Hans Agren, Jerker Widengren, Haichun Liu
Summary: In this work, the luminescence response of lanthanide-doped upconversion nanoparticles (UCNPs) to excitation pulse durations was thoroughly investigated. It was found that monitoring the average luminescence intensity using a low-time resolution detector offers a powerful approach to extend the utility of UCNPs.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Materials Science, Ceramics
Ke Jia, Zun Bi, Yunfei Liu, Yinong Lyu
Summary: The electronic structure and morphology of YF3: xEu(3+) were studied to improve its photoluminescence properties. By adjusting the Eu3+ doping concentrations and sample morphologies, a strong orange-red emission intensity was obtained.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Shashi Bhuckory, Satu Lahtinen, Niina Hoysniemi, Jiajia Guo, Xue Qiu, Tero Soukka, Niko Hildebrandt
Summary: In this study, the influence of surface coatings, bioconjugation, and dye-surface distance on FRET biosensing performance between UCNP and dyes was investigated using DNA-hybridization assays. The results showed that direct bioconjugation of DNA to the thin PAA coating combined with the closest possible dye-surface distance resulted in optimal FRET performance with minimal interference from H2O quenching. This improved understanding of UCNP-to-dye FRET was successfully translated into a miR-20a FRET assay with a limit of detection of 100 fmol in a sample volume of 80 μL.
Article
Chemistry, Multidisciplinary
Yao Xie, Guotao Sun, Gabrielle A. A. Mandl, Steven L. L. Maurizio, Jiabo Chen, John A. A. Capobianco, Lining Sun
Summary: Lanthanide-doped metal-organic frameworks (Ln-MOFs) with upconversion luminescence were successfully synthesized by doping Yb-BTC MOF 1D microrods with Er3+, Ho3+, Tb3+, and Eu3+ ions. The MOFs exhibited both cooperative luminescence from Yb3+ and characteristic emission bands of the dopant ions. In contrast, the MOFs doped with Tm3+, Pr3+, Sm3+, and Dy3+ ions only showed the 497 nm upconversion emission band from Yb3+.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Chemistry, Inorganic & Nuclear
Hui Yu, Yun Chai, Aliya Tiemuer, Yuxuan Han, Hai-Yan Wang, Yi Liu
Summary: This review introduces the principle and characteristics of frequency upconversion luminescence (FUCL) and its wide applications in the fields of bioimaging, biodetection, and cancer therapy. The article also discusses the current challenges and prospects for new breakthroughs in FUCL materials in the near future.
COORDINATION CHEMISTRY REVIEWS
(2023)
Article
Physics, Applied
Tingxing Shi, Feng Chen, Xiyu Zhao, Jiahua Zhang, Xiao-Jun Wang, Feng Liu
Summary: Upconversion charging (UCC) is an emerging approach to charge storage phosphors that has gained increasing attention due to its fundamental and practical potential. This study investigates the UCC performance of storage phosphors using a white flashlight as the excitation light source and demonstrates the involvement of excited-state absorption and energy-transfer upconversion in the UCC process. The study also introduces a conceptual thermometry approach based on the luminescence performance of the white-light charged phosphor.
APPLIED PHYSICS LETTERS
(2022)
Article
Optics
Aamir Mushtaq, Xiaodong Yang, Jie Gao
Summary: This article investigates the upconversion photoluminescence phenomenon in monolayer WSe2 and reveals two different upconversion mechanisms. The valley polarization properties of UPL emission are also explored. These findings are significant for photon upconversion applications based on monolayer TMDCs.
Article
Materials Science, Multidisciplinary
Xiaorui Jiao, Wei Zhou, Mahmood Hassan Akhtar, Di Demi He, Weiping Zhou, Lang Yao, Yun Zhang, Ning Liu, Cong Yu
Summary: This study reports a novel nanoplatform of upconversion nanoparticle (UCNPs)-decorated hollow mesoporous carbon nanoparticles (HMCNs@UCNPs) for cancer diagnosis and treatment. The newly synthesized nanomaterial was characterized by high-resolution TEM (HR-TEM), XRD, and BET techniques. The porous nature of the HMCNs@UCNPs nanomaterial allowed effective loading of the anticancer drug (DOX) and demonstrated chemotherapeutic and photothermal effects.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Materials Science, Ceramics
Jie Chen, Yixin Gao, Chao Wang, Yu Yin, Jiaxing Song, Xiaodan Zeng, Zhigang Liu, Haifeng Jiang
Summary: In this study, NaErF4 crystals with diverse crystal phases and morphologies were prepared using a simple hydrothermal method, and a series of NaErF4@SiO2 core-shell samples with different SiO2 shell thickness were successfully prepared. It was found that increasing the F- content can enhance the upconversion luminescence intensity of NaErF4, and changing the NaErF4 crystal phase and SiO2 shell thickness can bring about multicolor luminescence. Additionally, the NaErF4 and NaErF4@SiO2 samples showed a greater red to green ratio compared to traditional co-doping systems, suggesting potential applications in biological imaging and sensing fields.
CERAMICS INTERNATIONAL
(2022)
Article
Nanoscience & Nanotechnology
Huilin He, Mengjia Cen, Jiawei Wang, Yiwei Xu, Jianxun Liu, Wenfeng Cai, Delai Kong, Ke Li, Dan Luo, Tun Cao, Yan Jun Liu
Summary: Strong upconverted circularly polarized luminescence can be achieved from achiral core-shell upconversion nanoparticles (UCNPs) via plasmonic chiral metasurface-induced optical chirality transfer. In the UCNPs-on-metasurface composite, significant enhancement and circular polarization modulation of upconversion luminescence can be achieved, paving new pathways to potential applications in imaging, sensing, and anticounterfeiting fields.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Zhe Wang, Xueshuang Li, Shengyan Yin, Xingyuan Guo, Weiping Qin
Summary: Monodisperse cubic NaYF4: 20%Yb, 2%Er nanoparticles were synthesized successfully using high-temperature thermal decomposition method. The crystal structure of the nanoparticles changed from cubic to hexagonal phase with the increase in Eu3+ concentration, resulting in decreased upconversion luminescent intensities. Energy transfer between Er3+ and Eu3+ ions was observed with near infrared light excitation.
FUNCTIONAL MATERIALS LETTERS
(2022)
Article
Optics
Yadong Jiao, Zhixu Jia, Xiaohui Guo, Zhipeng Zhao, Yasutake Ohishi, Weiping Qin, Guanshi Qin
Summary: In this Letter, we demonstrate a third-order cascaded Raman shift in an all-solid fluorotellurite fiber, which has promising potential for constructing cascaded Raman fiber lasers with a wide range of wavelengths.
Article
Optics
Yuewu Fu, Yu Yang, Tonghe Sun, Ying Tang, Jun Li, Hao Cui, Weiping Qin, Fei Wang, Guanshi Qin, Dan Zhao
Summary: This study introduces an S-band waveguide amplifier using a nanocomposite of nanoparticles and polymer as the gain medium. By optimizing the doping concentration, the strongest emission luminescence at 1480 nm is achieved, and a relative gain of 5.6 dB/cm is observed. This is the first time that S-band amplification has been achieved in a polymer-based waveguide amplifier.
Article
Materials Science, Multidisciplinary
Xiaohui Guo, Fanchao Meng, Zhixu Jia, Yadong Jiao, Yasutake Ohishi, Weiping Qin, Guanshi Qin
Summary: This study demonstrates the generation of dispersive waves at 4 pm using dispersion-engineered fluorotellurite fibers pumped by a femtosecond fiber laser. The fluorotellurite fibers have two zero-dispersion wavelengths and the dispersive wave is generated through a series of processes. The results indicate the potential of dispersion-engineered fluorotellurite fibers for constructing all-fiber 4 pm light sources.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Materials Science, Multidisciplinary
Yao Sun, Yini Li, Wanying Zhang, Peifen Zhu, Hongyang Zhu, Weiping Qin, Guofeng Wang
Summary: This study simultaneously prepared three-color lead halide perovskite phosphors with higher stability and luminous intensity, and successfully applied them in WLEDs, achieving superior color quality and ideal correlated color temperature.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Saroj Thapa, Hongyang Zhu, Alexei Grigoriev, Peifen Zhu
Summary: A novel composite of CsPbBr3 perovskite nanocrystals doped with nickel thiocyanate is reported, demonstrating improved photoluminescence and extended stability. The addition of Ni(SCN)2 reduces surface trap states, resulting in increased photoluminescence quantum yield. These doped nanocrystals exhibit higher photoluminescence efficiency and can be used for stable white light emission.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Yanhui Dong, Dan Zhang, Daguang Li, Heng Jia, Weiping Qin
Summary: This study introduces the concepts of critical concentration and time window as the keys to inhibiting Ostwald ripening, and successfully achieves the controllable synthesis of high-quality nanocrystals through precise controls.
SCIENCE CHINA-MATERIALS
(2023)
Article
Engineering, Environmental
Jing Mao, Dilip Venugopal, Yaoyang Zhang, Peifen Zhu, Guofeng Wang
Summary: Addressing environmental pollution by replacing lead in perovskite optoelectronic devices is a major concern. This study used density functional theory to predict the properties of lead-free compound CsGeBr3 and successfully synthesized it. CsGeBr3 showed the ability to emit white light and demonstrated stability under UV radiation. By combining CsGeBr3 with MOF:Eu3+ phosphors, white light-emitting diode (WLED) devices with commendable color rendering index (CRI) and correlated color temperature (CCT) were fabricated. These WLED devices also efficiently stimulated silicon solar cells, resulting in impressive photoelectric performance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Engineering, Electrical & Electronic
Peifen Zhu, Saroj Thapa, Hongyang Zhu, Dilip Venugopal, Alieu Sambou, Yang Yue, Sai Sindhuja Dantuluri, Shubhra Gangopadhyay
Summary: Inorganic metal halide-based perovskites have great potential for solid-state lighting due to their abundant elements, solution processability, high PLQY, and tunable band gap energy and emission. A 3D printing technique was used to fabricate resin-perovskite color conversion layers, simplifying the fabrication process and improving device performance. The printed color conversion layers exhibited exceptional stability and resulted in white lights with adjustable correlated color temperatures and high color rendering indexes.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Physical
Peifen Zhu, Saroj Thapa, Hongyang Zhu, Stephen Wheat, Yang Yue, Dilip Venugopal
Summary: This study presents a simple recrystallization process to prepare halide double perovskites (DP) Cs2Ag1-xKxIn0.875Bi0.125Cl6 (x≤0.60) under ligand-free conditions, and improves their optical properties by tuning the composition. With the optimal alloying content, these halide DPs exhibit high-quality white light emission suitable for white LED. This research provides insight into achieving environmentally friendly and high-efficiency white light emission using abundant elements and a low-cost synthesis method.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Physics, Multidisciplinary
Daguang Li, Hao Cui, Guanshi Qin, Weiping Qin
Summary: Under intense light irradiation, pure-white objects exhibit strong light absorption capabilities similar to blackbodies, and generate photon avalanche optical frequency conversion and optical bistable luminescence.
COMMUNICATIONS PHYSICS
(2023)
Article
Chemistry, Physical
Yinxiang Wang, Yanna Zhao, Peifen Zhu, Xiantong Wu, Amina Koshayeva, Liping Ding, Guodong Wei, Ying Su
Summary: Non-metallic nitrogen doping and carbon coating are the most promising strategies to improve the performance of TiO2 photoelectrocatalyst. In this study, a one-stage carbothermal reduction nitridation (CRN) strategy is proposed to enhance the photoelectrocatalytic performance of TiO2 nanowires for hydrogen production. The nitrogen-doped TiO2/Ti(C0.7N0.3) co-catalyst/nitrogen-doped carbon (N-TiO2/Ti(CN)/N-C) core-double shell nanowire arrays (NWAs) exhibit superior PEC performance under simulated sunlight and visible light conditions compared to pure TiO2 NWAs.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Heng Jia, Yingyue Teng, Nan Li, Daguang Li, Yanhui Dong, Dan Zhang, Zhihe Liu, Dan Zhao, Xingyuan Guo, Weihua Di, Weiping Qin
Summary: This article reports a new strategy for constructing a dual stimuli-responsive multicolor security ink, which allows visualization of hidden information through switching luminescence outputs and pH stimulation, and exhibits robust stability.
ACS MATERIALS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Zhe Wang, Xueshuang Li, Shengyan Yin, Xingyuan Guo, Weiping Qin
Summary: Cubic silver phosphate nanoparticles with high photocatalytic activity were successfully prepared with the assistance of trisodium citrate. The photocatalytic activity of Ag3PO4 NPs was verified through photodegradation experiments, and their characteristics were studied using various characterization methods.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Xianda Wu, Minghong Chen, Shuiyun Zheng, Fu-Sheng He, Jie Wu
Summary: Here, we report a new method for synthesizing sulfilimines through an iron-catalyzed reaction between sulfenamides and 2,2,2-trifluor-diazoethane. This protocol features operational simplicity, mild conditions, and can be conducted in open air, providing a facile approach to trifloromethylated sulfilimines in moderate to good yields.
JOURNAL OF FLUORINE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Ita Hajdin, Romana Pajkert, Haibo Mei, Jianlin Han, Gerd-Volker Roeschenthaler
Summary: A catalyst- and solvent-free 1,3-dipolar cycloaddition reaction using a bench-stable diazo reagent has been developed to obtain a series of novel 3H-pyrazoles bearing difluoromethyl phosphonate unit in moderate-to-excellent yields. This method provides an efficient and easy route to synthesize valuable compounds.
JOURNAL OF FLUORINE CHEMISTRY
(2024)
