Article
Chemistry, Multidisciplinary
Kanagaraj Shanmugasundaram, Hyeln Been, Jino C. John, Archana Puthanveedu, Nguyet N. T. Pharm, Seung Geol Lee, Youngson Choe
Summary: Organic luminescent materials based on thiophene-linked phenanthroimidazole derivatives with different substituents were synthesized and characterized for their high thermal and photophysical properties, leading to the development of non-doped light-emitting electrochemical cells (LECs) with high current efficiency and maximum external quantum efficiency. This research provides strategies for the rational design and synthesis of light emitters using the phenanthroimidazole architecture for practical application in low-cost devices.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Junseop Lim, Si Hyun Han, Jun Yeob Lee
Summary: The authors report on organic light-emitting diodes (OLEDs) emitting light through charge-transfer (CT) complex formation in the light-emitting layer. Two phosphorescent materials with energy level offset are chosen for efficient CT complex generation. The resulting CT complex emits a yellow light under an electric field and can be used to create white OLEDs with blue and yellow emissions at a quantum efficiency of 13.7%. Further material development is expected to enhance the quantum efficiency of CT complex OLEDs.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Qixin Guo, Katsuhiko Saito, Tooru Tanaka
Summary: This article reviews the progress made in achieving color-tunable LEDs based on rare earth doped wide bandgap Ga2O3 semiconductors. The study found that rare earth doped Ga2O3 films can emit strong emissions in the red, green, and blue spectral regions respectively, and demonstrated the development of red, green, and blue LEDs based on these films. Color-tunable LEDs were achieved using Eu, Er, and Tm codoped Ga2O3 films.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Physics, Applied
Mei Cui, Chenyu Guo, Zhenhai Yang, Li Chen, Yijun Dai, Houqiang Xu, Wei Guo, Jichun Ye
Summary: This paper investigates the application of conductive dielectric distributed Bragg reflectors (DBRs) in GaN-based light emitters. A conductive DBR was fabricated using the electrical breakdown technique. The optical simulations and electrical tests demonstrated its excellent performance. The conductive mechanisms were elaborated by comparing different metal electrodes. Ultimately, a conductive DBR with high reflectivity was successfully prepared.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Multidisciplinary Sciences
Zifeng Zhao, Liding Wang, Ge Zhan, Zhiwei Liu, Zuqiang Bian, Chunhui Huang
Summary: The blue emissive rare earth cerium(III) complex Ce-2 demonstrated high photoluminescence quantum yield and a short excited state lifetime, making it a promising candidate for efficient and stable blue OLEDs with significantly improved performance compared to typical phosphorescence or delayed fluorescence emitters.
NATIONAL SCIENCE REVIEW
(2021)
Article
Chemistry, Applied
Taian Huang, Zhanxiang Chen, Yang Zou, Shaolong Gong, Chuluo Yang
Summary: A novel three-dimensional tetracoordinated organoboron acceptor, developed by direct borylation of pyridine derivatives, showed good stability, high PLQY, and TADF properties in the donor-acceptor emitter. By selecting different donors with varying electron donating abilities, two distinct electroluminescent devices achieved over 10% maximum external quantum efficiency with white and green emission.
Article
Chemistry, Multidisciplinary
Jiahui Liu, Junjie Liu, Haoyuan Li, Zhengyang Bin, Jingsong You
Summary: Researchers have successfully developed high-performance narrowband red organic light-emitting diodes (OLEDs) using boron-dipyrromethene (BODIPY) skeleton in combination with a methyl-shield strategy. These emitters exhibit small full-width at half-maxima (FWHM) ranging from 21 nm (0.068 eV) to 25 nm (0.081 eV) and high photoluminescence quantum yields (φ(PL)) ranging from 88.5% to 99.0% in toluene solution. High-performance narrowband red OLEDs with external quantum efficiency as high as 18.3% at 623 nm and 21.1% at 604 nm have been achieved using these emitters as luminescent materials, representing the first successful case of achieving NTSC pure-red OLEDs with the Commission Internationale de l'eclairage (CIE) coordinates of [0.67, 0.33] based on conventional fluorescent emitters.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Yu Fu, Zecong Ye, Denghui Liu, Yingxiao Mu, Jingping Xiao, Dehua Hu, Shaomin Ji, Yanping Huo, Shi-Jian Su
Summary: In this study, a series of thermally activated delayed fluorescence (TADF) macrocycles are synthesized using a modularly tunable strategy by introducing xanthones as acceptors and phenylamine derivatives as donors. Detailed analysis of their photophysical properties reveals their characteristics of high performance. The corresponding devices exhibit record-high external quantum efficiencies of 31.6% and 26.9%, respectively, in the field of TADF macrocycles, owing to the high photoluminescence quantum yields and excellent dipole orientation of the macrocycles.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Clement Brouillac, Fan-Cheng Kong, Joelle Rault-Berthelot, Cassandre Quinton, Zuo-Quan Jiang, Cyril Poriel
Summary: Designing deep-blue fluorophores with a low CIEy is crucial for OLED technology, whether for display applications or new applications like antibacterial light sources. This study reports the synthesis, physico-chemical properties, and application of two deep-blue emitters in an OLED. The emitters demonstrated high device performance with suitable CIE coordinates, and one emitter showed a deep-blue emission with an EQE of 1.7% and a V-on of 4 V, fitting the NTSC and EBU standards.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Multidisciplinary
Yuxuan Hu, Manli Huang, He Liu, Jingsheng Miao, Chuluo Yang
Summary: Organic light-emitting diodes (OLEDs) using conventional fluorescent emitters are currently attracting considerable interest due to their stability and abundant raw materials. A new strategy has been proposed to construct high-performance narrowband fluorophores for ultra-high-definition displays. By fusing multi-resonance BN-doped moieties to naphthalene, two novel narrowband fluorophores have been successfully constructed. These fluorophores exhibit narrow full-width at half-maxima, high photoluminescence quantum yields, and high molecular horizontal dipole ratios. The corresponding OLED devices show state-of-the-art performances, including high external quantum efficiencies, low efficiency roll-off, and long operational lifetimes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Liane M. Moreau, Ekaterina Lapsheva, Jorge Amaro-Estrada, Michael R. Gau, Patrick J. Carroll, Brian C. Manor, Yusen Qiao, Qiaomu Yang, Wayne W. Lukens, Dimosthenis Sokaras, Eric J. Schelter, Laurent Maron, Corwin H. Booth
Summary: This study examines the role of 5d orbitals in Ce imido and oxo complexes and their impact on bonding, electronic, and magnetic structure. The results show that the distribution of d states varies depending on the bonding motif and capping species, despite similar occupancy levels of f orbitals.
Article
Optics
Linyu Cao, Kody Klimes, Yunlong Ji, Tyler Fleetham, Jian Li
Summary: The newly developed tetradentate Pd(ii) complex Pd3O8-P with near unity photoluminescent quantum yield has potential applications in high-brightness, long-lifetime OLED devices. Its features include high quantum efficiency, reduced efficiency roll-off, and an estimated operational half-lifetime of several million hours.
Article
Materials Science, Multidisciplinary
Cheng-Zhuo Du, Yang Lv, Hengyi Dai, Xiangchen Hong, Jianping Zhou, Ji-Kun Li, Rong-Rong Gao, Dongdong Zhang, Lian Duan, Xiao-Ye Wang
Summary: A new family of indole-fused multi-resonance thermally activated delayed fluorescence materials have been developed, which exhibit narrowband blue emission with a small full width at half maximum of 22-23 nm. High maximum external quantum efficiencies of up to 16.8% have been achieved in organic light-emitting diodes. Furthermore, it is unveiled that peripheral substitutions can not only promote device efficiency but also help to maintain narrowband emission under high dopant concentrations.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Gang Zhao, Wencheng Fan, Haiyang Chen, Xiaoxuan Ma, Baojuan Kang, Wenlai Lu, Jincang Zhang, Shixun Cao
Summary: The large single crystal Dy0.5Er0.5FeO3 shows spin switching behavior in a wide temperature range, with the occurrence of magnetization drop in field-cooling (FC) mode and magnetization jump in zero-field-cooling (ZFC) mode under low magnetic fields. The spin reorientation transition and spin switching in Dy0.5Er0.5FeO3 single crystal are governed by magnetic interactions between (Dy, Er)-4f and Fe-3d electrons in different sublattices.
APPLIED MATERIALS TODAY
(2021)
Review
Chemistry, Multidisciplinary
He Jiang, Jibiao Jin, Wai-Yeung Wong
Summary: Multi-resonance thermally activated delayed fluorescence (MR-TADF) emitters have received significant attention for their high emission efficiency and narrow emission profile, making them a hot topic in organic electroluminescence (EL) research. However, the slow reverse intersystem crossing (RISC) rate of MR-TADF emitters due to the large energy gap (ΔE-ST) and small spin-orbit coupling (SOC) matrix elements between singlet and triplet excited states hinders their further development in organic EL devices. Innovative molecular design strategies, including heavy atom integration, π-extended MR frameworks, and metal perturbation, have been developed to enhance the RISC process of MR-TADF emitters for high-performance EL devices. This article provides an overview of the recent progress in MR-TADF emitters with fast RISC rates (> 10(-5) s(-1)), focusing on molecular design, optoelectronic properties, and device performance of organic light-emitting diodes (OLEDs), with the aim of systematizing knowledge in this field for the thriving development of highly efficient MR-TADF emitters. Finally, the challenges and future prospects of MR-TADF materials are comprehensively discussed.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Automation & Control Systems
Teng-Fei Ding, Ming-Feng Ge, Caihua Xiong, Zhi-Wei Liu, Guang Ling
Summary: In this paper, a flexible shape generator (FSG) is designed to achieve the divinable transformation process of the time-varying formation, and consider the FSG-based time-varying formation tracking (TVFT) problem of multiple Lagrangian agents with unknown disturbances and directed graphs. A hierarchical control algorithm is newly designed to achieve the control goal without using the prior information of the system model and bounded disturbances, and the specific implementation of the proposed hierarchical algorithms is also provided. The stability analysis shows that the formation tracking errors of the considered system are uniform ultimate bounded, and several simulation examples are performed to demonstrate the effectiveness of the theoretical results.
Article
Biophysics
Wei Pu, Jiuzhou Chen, Pi Liu, Jie Shen, Ningyun Cai, Baoyan Liu, Yu Lei, Lixian Wang, Xiaomeng Ni, Jie Zhang, Jiao Liu, Yingyu Zhou, Wenjuan Zhou, Hongwu Ma, Yu Wang, Ping Zheng, Jibin Sun
Summary: Optimizing the effector-binding domain of transcriptional regulators can improve the performance of whole-cell biosensors, enabling high-throughput screening and dynamic regulation of metabolic pathways. Molecular dynamics simulation revealed the crucial role of a short linker helix in protein conformational change, and directed evolution successfully produced variants with extended operational range and unaltered effector specificity. This study highlights the potential of linker helix engineering as an efficient and universal strategy for developing and optimizing whole-cell biosensors.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Biophysics
Shanglin Li, Bao Li, Xinyue Li, Ce Liu, Xiao Qi, Yin Gu, Baobao Lin, Lingli Sun, Lan Chen, Bingqian Han, Jiazhen Guo, Yanyi Huang, Shuangsheng Wu, Lili Ren, Jianbin Wang, Jingwei Bai, Jianxin Ma, Maosheng Yao, Peng Liu
Summary: The airborne transmissibility of SARS-CoV-2 has created an urgent need for aerosol monitoring to prevent sporadic outbreaks of COVID-19. We have developed a novel monitoring system that combines high sensitivity and a short turnaround time. By testing clinical samples, we have demonstrated the excellent performance of our system and its potential application in fighting the COVID-19 pandemic.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Chemistry, Inorganic & Nuclear
Rui Wei, Xin-Feng Wang, Liu Leo Liu
Summary: Three protocols for cleaving the Au-P bond in Au-substituted phosphines have been demonstrated: direct demetallation with a strong anionic base, protonation followed by demetallation with a neutral base, and oxidation-triggered metal migration. These protocols resulted in the formation of various gold-phosphorus compounds with different ligands and functional groups.
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
(2023)
Review
Engineering, Manufacturing
Zeguang Liu, Yang Li, Zhiwei Liu, Yuanduo Yang, Yiang Li, Zhen Luo
Summary: With the increasing application of fiber-reinforced thermoplastic (FRTP) in the industry, researchers are focusing on metal/FRTP hybrid structures welding. Ultrasonic welding is an efficient and cost-effective method for metal/FRTP dissimilar joining. The current understanding of metal/FRTP ultrasonic welding is summarized in this paper from four aspects: welding process, joining mechanism, mechanical properties, and galvanic corrosion.
JOURNAL OF MANUFACTURING PROCESSES
(2023)
Article
Chemistry, Multidisciplinary
Wenjin Yu, Mingyang Wei, Zhenyu Tang, Hongshuai Zou, Liang Li, Yu Zou, Shuang Yang, Yunkun Wang, Yuqing Zhang, Xiangdong Li, Haoqing Guo, Cuncun Wu, Bo Qu, Yunan Gao, Guowei Lu, Shufeng Wang, Zhijian Chen, Zhiwei Liu, Huanping Zhou, Bin Wei, Yingjie Liao, Lijun Zhang, Yan Li, Qihuang Gong, Edward H. H. Sargent, Lixin Xiao
Summary: A new synthetic approach is developed to improve the LED performance of perovskite nanocrystals. By introducing a bifunctional carboxylic-acid-containing ammonium hydrobromide ligand, the crystallization process of perovskite nanocrystals can be controlled, leading to improved photoluminescence quantum yield. Green LEDs fabricated using this method even outperform traditional perovskite nanocrystal-based LED devices.
ADVANCED MATERIALS
(2023)
Article
Engineering, Environmental
Xiaowen Lu, Tingting Luo, Mingyang Zhang, J. Hugh Horton, Qiong Wu, Wei Wu, Man Qiao, Yu Wang, Zhijun Li
Summary: The size and geometry of supported metal ensembles are crucial in the design of effective heterogeneous catalysts. In this study, supported single atomic-layered, low-nuclearity palladium catalysts were created using an electronic and structural engineering strategy. These atomically dispersed Pd catalysts exhibited excellent catalytic activity in the hydrogenation of levulinic acid to 1,4-pentanediol, a reaction of importance for biomass conversion. Theoretical calculations revealed that the high catalytic activity was a result of cooperation between adjacent Pd atoms and strong electronic metal-support interactions.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Chongwei Bi, Lin Wang, Yong Fan, Baolei Yuan, Samhan Alsolami, Yingzi Zhang, Pu-Yao Zhang, Yanyi Huang, Yang Yu, Juan Carlos Izpisua Belmonte, Mo Li
Summary: We utilized our individual Mitochondrial Genome sequencing (iMiGseq) technology to investigate the origin and dynamics of mtDNA heteroplasmy. Our study provided the first comprehensive analysis of heteroplasmy landscape in single human oocytes, revealing unappreciated levels of rare heteroplasmic variants. Genetic linkage analysis showed significant shifts in variant frequency and clonal expansions of large structural variants during oogenesis.
NUCLEIC ACIDS RESEARCH
(2023)
Article
Biochemistry & Molecular Biology
Jianwei Wei, Li Wang, Yuyan Zhang, Ting Sun, Cai Zhang, Zhonglan Hu, Lijuan Zhou, Xianzhi Liu, Junhu Wan, Liwei Ma
Summary: TRIM25 overexpression in glioblastoma is associated with tumor grade and temozolomide resistance. Elevated TRIM25 expression predicts poor prognosis and enhances tumor growth. Mechanistically, TRIM25 promotes TMZ resistance by facilitating nuclear import of Nrf2 via keap1 ubiquitination. Targeting TRIM25 could be a potential therapeutic strategy for glioma.
Article
Environmental Sciences
Zihe Wang, Wei Huang, Zhiwei Liu, Jiaxiong Zeng, Zhili He, Longfei Shu
Summary: This study investigated the effects of imidacloprid on the growth and development of a soil amoeba and found that it negatively impacted their fitness and development. The adverse effects did not show a dose-response relationship with increased imidacloprid concentrations. Transcriptome analyses showed that imidacloprid affected key genes related to various cellular processes in amoebae.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Neurosciences
Zhi-Hao Liu, Yu-Di Bai, Zhong-Yuan Yu, Hui-Yun Li, Jie Liu, Cheng-Rong Tan, Gui-Hua Zeng, Yun-Feng Tu, Pu-Yang Sun, Yu-Juan Jia, Jin-Cai He, Yan-Jiang Wang, Xian-Le Bu
Summary: A study found that decreased energy metabolism in blood monocytes is associated with cellular senescence, dysfunctional phagocytosis of amyloid beta (A beta), and the progression of Alzheimer's disease (AD). Improving energy metabolism rejuvenates monocytes and enhances their ability to phagocytose A beta, leading to reduced A beta deposition and neuroinflammation, and improved cognitive function in AD mice. This study reveals a new mechanism of impaired A beta phagocytosis in monocytes and suggests restoring energy metabolism as a novel therapeutic strategy for AD.
NEUROSCIENCE BULLETIN
(2023)
Article
Green & Sustainable Science & Technology
Qihao Hu, Ming Chi, Zhi-Wei Liu
Summary: This paper proposes a pricing game strategy with virtual prosumer guidance in a peer-to-peer energy market model in community grid, aiming to facilitate the local consumption of renewable energy within the community.
IET RENEWABLE POWER GENERATION
(2023)
Article
Materials Science, Multidisciplinary
G. P. Li, X. C. Zhong, X. Huang, C. L. Liu, J. H. Huang, K. W. Long, H. Y. Yu, Z. W. Liu, R. V. Ramanujan
Summary: To study the role of elements in the increase of 1:13 phase content in La-Fe-Si/RE-Co composites, the diffusion behavior of Y and Co during annealing and their influence on the microstructure, magnetocaloric and mechanical properties of LaFe11.8Si1.2/ Y64Co36 composites were investigated. The results showed that Co atoms diffused into the LaFe11.8Si1.2 particles and stabilized the 1:13 phase, while Y atoms reacted with Fe atoms to form the stable Y2Fe17-type phase, resulting in increased T-C and (-Delta S-M)(max) values. Additionally, the bonding between Y2Fe17-type phase and LaFe11.8Si1.2 particles improved the compressive strength (sigma(bc))(max) of the composites.
JOURNAL OF MATERIALS RESEARCH
(2023)
Article
Food Science & Technology
Shuai Xiao, Yingxin Wu, Suisui Gao, Mingxia Zhou, Zhiwei Liu, Qianbo Xiong, Lihuang Jiang, Guoxiang Yuan, Linfeng Li, Lingchen Yang
Summary: This study investigates the combined nephrotoxicity of Aflatoxin B1 (AFB1) and T-2 toxin (T-2) on PK15 cells and murine renal tissues and their related oxidative stress mechanisms. The findings highlight the importance of considering the combined effects of mycotoxins in animal feed, particularly AFB1 and T-2, which can lead to severe nephrotoxicity and oxidative stress in PK15 cells and mouse kidneys.
Proceedings Paper
Computer Science, Artificial Intelligence
Shuyan Wang, Wei Wu, Yanyan Zhang
Summary: A MOOC resource recommendation model based on heterogeneous information network is proposed to address the problem of the existing MOOC recommendation mechanism not meeting the dynamic and diversified learning needs of different individuals. By capturing the heterogeneity between multiple entities in the MOOC platform and utilizing node level attention and meta-path level fusion of attention, this model incorporates user and knowledge into an extended matrix factorization framework to predict user preferences for knowledge and provide personalized recommendation service. Experimental results demonstrate that this model outperforms other commonly used models and effectively solves the problem of personalized recommendation for learners.
ADVANCES IN NATURAL COMPUTATION, FUZZY SYSTEMS AND KNOWLEDGE DISCOVERY, ICNC-FSKD 2022
(2023)
