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AIEgen configuration transition and aggregation enable dual p.o.pt emission for single-component nondoped white oLEDs

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Aggregate

Aggregate 2024年第1期5卷 292-298页

作者： Jiasen Zhang Qiang wei wei Li Hao Chen Xiangyu Zhu Yongqi Bai Nannan Fei Liang Cao Zujin zhao Anjun qin Ben Zhong Tang Ziyi Ge Zhejiang p.o.incial Engineering Research center of energy op.o.lectronic Materials and Devices Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingboP.R.China center of Materials science and op.o.lectronics Engineering University of Chinese Academy of SciencesBeijingP.R.China center for Aggregation-Induced Emission State Key Laboratory of Luminescent Materials and Devices South China University of Technology GuangzhouGuangzhouChina Shenzhen institute of Aggregate science and technology School of Science and EngineeringThe Chinese University of Hong KongShenzhenChina

The dual emission(DE)feature in materials holds great potential to revolutionize the development of one-component system white organic lightemitting diodes(WoLEDs).However,the reported DE materials remain scarce owing to the formidable challenge of breaking Kasha’s rule and managing the intricate energy/charge transfer ***,we have introduced a groundbreaking DE AIEgen,2CzAn-TpE,which possesses a simple structure and undergoes Z-to-E isomerization and exhibits yellow and red fluorescence powders for pre-and post-sublimation,*** relatively lower potential energy,Z-conformation((Z)-1,2-diphenyl-1,2-bis(4-(10-(9-phenyl-9H-carbazol-3-yl)anthracen-9-yl)phenyl)ethene)of 2CzAn-TpE can be readily transformed into E-conformation((E)-1,2-diphenyl-1,2-bis(4-(10-(9-phenyl-9Hcarbazol-3-yl)anthracen-9-yl)phenyl)ethene)via vacuum *** utilization of X-ray diffraction and grazing-incidence-wide-angle X-ray scattering techniques confirms the structural transformation,while the crystallographic analysis reveals the establishment of numerous intermolecular CH⋅⋅⋅πinteractions between the tetraphenylethene(TpE)moiety and both the anthracene and carbazole *** allows a densely packed molecular arrangement,thereby offering p.o.itious conditions for excimer generation in the E-conformation aggregated *** utilizing the sublimated 2CzAn-TpE as an emitter,a nondoped one-component WoLED was prepared,exhibiting an exceptionally high external quantum efficiency(EQE)of 5.0%,which represents one of the highest performances among all *** research introduces a novel,simple,and efficient app.o.ch to realize highly efficient one-molecule WoLEDs.

关键词： aggregation-induced emission dual emission isomerization white oLED

Hot carrier cooling in lead halide perovskites p.o.ed by two-pulse p.o.ovoltage correlation spectroscopy

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chinese physics B 2024年第10期33卷 116-119页

作者： Yuqing Huang Chaoyu Guo Lei Gao Wenna Du Haotian Zheng Da Wu Zhengpu zhao Chu-wei Zhang qin Wang Xin-Feng Liu qingfeng Yan Ying Jiang International center for Quantum Materials School of PhysicsPeking UniversityBeijing 100871China Collaborative Innovation center of Quantum Matter Beijing 100871China Department of Chemistry Tsinghua UniversityBeijing 100084China CAS Key Laboratory of Standardization and Measurement for Nanotechnology National Center for Nanoscience and TechnologyBeijing 100190China University of chinese academy of sciences Beijing 100049China Interdisciplinary institute of Light-Element Quantum Materials and Research center for Light-Element advanced Materials Peking UniversityBeijing 100871China

The next-generation hot-carrier solar cells,which can overcome the Shockley-Queisser limit by harvesting excessenergy from hot carriers,are receiving increasing *** halide perovskite(LHp)materials are considered asp.o.ising candidates due to their exceptional p.o.ovoltaic p.o.erties,good stability and low *** cooling rate of hotcarriers is a key parameter influencing the performance of hot-carrier solar *** this work,we successfully detected hotcarrier dynamics in operando LHp devices using the two-pulse p.o.ovoltage correlation *** enhance the signalto-noise ratio,we applied the delay-time modulation method instead of the traditional power *** advancementallowed us to detect the intraband hot carrier cooling time for the organic LHp CH_(3)NH_(3)pbBr_(3),which is as short as 0.21 *** comparison,the inorganic Cs-based LHp CspbBr_(3)exhibited a longer cooling time of around 0.59 ps due to differentp.o.on *** results p.o.ide us new insights into the optimal design of hot-carrier solar cells and highlightthe potential of LHp materials in advancing solar cell technology.

关键词： two-pulse correlation spectroscopy lead halide perovskites hot carrier cooling ultrafast dynamics

Current-Induced Magnetization Switching Behavior in perpendicular Magnetized L1_(0)-MnAl/B2-CoGa Bilayer

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chinese physics Letters 2024年第5期41卷 138-143页

作者：孙宏利韩荣坤秦红蕊赵旭鹏谢志成魏大海赵建华 State Key Laboratory of Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China center of Materials science and op.o.lectronics Engineering University of Chinese Academy of SciencesBeijing 100190China International School of Microelectronics Dongguan University of TechnologyDongguan 523808China

Rare-earth-free Mn-based binary alloy L1_(0)-MnAl with bulk perpendicular magnetic anisotropy(pMA) holds p.o.ise for high-performance magnetic random access memory(MRAM) devices driven by spin-orbit torque(SoT). However, the lattice-mismatch issue makes it challenging to place conventional spin current sources, such as heavy metals, between L1_(0)-MnAl layers and substrates. In this work, we p.o.ose a solution by using the B2-CoGa alloy as the spin current source. The lattice-matching enables high-quality epitaxial growth of 2-nm-thick L1_(0)-MnAl on B2-CoGa, and the L1_(0)-MnAl exhibits a large pMA constant of 1.04 × 10^(6)J/m^(3). Subsequently, the considerable spin Hall effect in B2-CoGa enables the achievement of SoT-induced deterministic magnetization switching. Moreover, we quantitatively determine the SoT efficiency in the bilayer. Furthermore, we design an L1_(0)-MnAl/B2-CoGa/Co_(2)MnGa structure to achieve field-free magnetic switching. our results p.o.ide valuable insights for achieving high-performance SoT-MRAM devices based on L1_(0)-MnAl alloy.

关键词： alloy enable holds

Infection with SARS-CoV-2 can cause pancreatic impairment

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Signal Transduction and Targeted Therapy 2024年第5期9卷 2143-2160页

作者： wei Deng Linlin Bao Zhiqi Song Ling Zhang pin Yu Yanfeng Xu Jue Wang Wenjie zhao Xiuqin Zhang Yunlin Han Yanhong Li Jiangning Liu Qi Lv Xujian Liang Fengdi Li Feifei Qi Ran Deng Siyuan Wang Yibai Xiong Ruiping Xiao Hongyang Wang Chuan qin NHC Key Laboratory of Comparative Medicine Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious DiseasesInstitute of Laboratory Animal ScienceChinese Academy of Medical Sciences and Comparative Medicine CenterPeking Union Medical CollegeBeijing 100021China institute of Molecular Medicine College of Future TechnologyPeking UniversityBeijing 100871China beijing Key Laboratory of Cardiometabolic Molecular Medicine Peking UniversityBeijing 100871China State Key Laboratory of Biomembrane and Membrane Biotechnology Peking-Tsinghua Center for Life SciencesBeijing 100871China chinese academy of Engineering Eastern Hepatobiliary Surgery Hospital225 Changhai RoadYangpu DistrictShanghai 200438China International Co-operation Laboratory on Signal Transduction Eastern Hepatobiliary Surgery InstituteSecond Military Medical UniversityShanghai 200438PR China National Laboratory for oncogenes and Related Genes Cancer Institute of Shanghai Jiao Tong UniversityShanghai 200441PR China Changping National laboratory(CpNL) Beijing 102206China State Key Laboratory of Respiratory Health and Multimorbidity National Health Commission of the People’s Republic of ChinaBeijingPR China

Evidence suggests associations between CoVID-19 patients or vaccines and glycometabolic dysfunction and an even higher risk of the occurrence of ***,we retrospectively analyzed pancreatic lesions in autopsy tissues from 67 SARS-CoV-2 infected non-human primates(NHps)models and 121 vaccinated and infected NHps from 2020 to 2023 and CoVID-19 ***-label immunofluorescence revealed direct infection of both exocrine and endocrine pancreatic cells by the virus in NHps and *** and limited phenotypic and histopathological changes were observed in adult *** p.o.eomics and metabolomics results indicated metabolic disorders,mainly enriched in insulin resistance pathways,in infected adult NHps,along with elevated fasting C-peptide and C-peptide/glucose ratio ***,in elder CoVID-19 NHps,SARS-CoV-2 infection causes loss of beta(β)cells and lower expressed-insulin in situ characterized by islet amyloidosis and necrosis,activation ofα-SMA and aggravated fibrosis consisting of lower collagen in serum,an increase of pancreatic inflammation and stress markers,ICAM-1 and G3Bp1,along with more severe glycometabolic *** contrast,vaccination maintained glucose homeostasis by activating insulin recep.o.αand insulin recep.o.β.overall,the cumulative risk of diabetes post-CoVID-19 is closely tied to age,suggesting more attention should be paid to blood sugar management in elderly CoVID-19 patients.

关键词： infected elevated homeostasis

Relation Between Dimension and Angular Momentum for Radially Symmetric potential in N-Dimensional Space

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Communications in Theoretical physics 2006年第3X期46卷 429-434页

作者： zhao wei-qin china center of advanced science and technology (CCAST) (World Lab.) P.O. Box 8730 Beijing 100080 China institute of high energy physics the Chinese Academy of Sciences P.O. Box 918(4-1) Beijing 100049 China

It is p.o.ed that when solving SchrSdinger equations for radially symmetric potentials the effect of higher dimensions on the radial wave function is equivalent to the effect of higher angular momenta in lower-dimensi... 详细信息

关键词： N-dimensional Schrodinger equation radially symmetric potential dimension and angular momentum

Groundstate with Zero Eigenvalue for Generalized Sombrero-Shaped potential in N-Dimensional Space

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Communications in Theoretical physics 2008年第7期50卷 139-141页

作者： zhao wei-qin china center of advanced science and technology （CCAST）（World Lab.） P.O. Box 8730 Beijing 100080 China institute of high energy physics the Chinese Academy of Sciences P.O. Box 918 （4-1） Beijing 100049 China

Based on an iterative method for solving the groundstate of Schrodinger equation, it is found that a kind of generalized Sombrero-shaped potentials in N-dimensional space has groundstates with zero eigenvalue. The res... 详细信息

关键词： iterative solution zero eigenvalue generalized Sombrero-shaped potential

Different Versions of perturbation Expansion Based on the Single-Trajectory Quadrature Method

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Communications in Theoretical physics 2002年第3期38卷 271-280页

作者： zhao wei-qin JU Chang-Sheng china center of advanced science and technology CCAST World Lab. P.O. Box 8730 Beijing 100080 China institute of high energy physics the Chinese Academy of Sciences P.O. Box 9184 Beijing 100039 China Institute of High Energy Physics the Chinese Academy of Sciences P.O. Box 9184 Beijing 100039 China

The newly developed single trajectory quadrature method is applied to a two-dimensional example. Theresults based on different versions of new perturbation expansion and the new Green's function deduced from thismethod are compared with each other, also compared with the result from the traditional perturlbation theory. As thefirst application to higher-dimensional non-separable potential thc obtained result further confirms the applicability andpotential of this new method.

关键词： single trajectory quadrature, new perturbation expansion, Green function

Artificial intelligence for geoscience:p.o.ress,challenges,and perspectives

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The Innovation 2024年第5期5卷 136-160,135页

作者： Tianjie zhao Sheng Wang Chaojun ouyang Min Chen Chenying Liu Jin Zhang Long Yu Fei Wang Yong Xie Jun Li Fang Wang Sabine Grunwald Bryan MWong Fan Zhang Zhen Qian Yongjun Xu Chengqing Yu wei Han Tao Sun Zezhi Shao Tangwen Qian zhao Chen Jiangyuan Zeng Huai Zhang Husi Letu Bing Zhang Li Wang Lei Luo Chong Shi Hongjun Su Hongsheng Zhang Shuai Yin Ni Huang wei zhao Nan Li Chaolei Zheng Yang Zhou Changping Huang Defeng Feng qingsong Xu Yan Wu Danfeng Hong Zhenyu Wang Yinyi Lin Tangtang Zhang prashant Kumar Antonio plaza Jocelyn Chanussot Jiabao Zhang Jiancheng Shi Lizhe Wang Aerospace Information Research institute Chinese Academy of SciencesBeijing 100094China School of Computer science China University of GeosciencesWuhan 430078China State Key Laboratory of Mountain Hazards and Engineering Resilience Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu 610299China Key Laboratory of Virtual Geographic Environment(Ministry of Education of pRC) Nanjing Normal UniversityNanjing 210023China Data science in Earth observation Technical University of Munich80333 MunichGermany The National Key Laboratory of Water Disaster prevention Yangtze Institute for Conservation and DevelopmentHohai UniversityNanjing 210098China institute of Computing technology Chinese Academy of SciencesBeijing 100190China School of Geographical sciences Nanjing University of Information Science and TechnologyNanjing 210044China State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China Soil Water and Ecosystem Sciences DepartmentUniversity of FloridaPO Box 110290GainesvilleFLUSA Materials science Engineering p.o.ram Cooperating Faculty Member in the Department of Chemistry and Department of physics Astronomy University of CaliforniaCaliforniaRiversideCA 92521USA institute of Remote Sensing and Geographical Information System School of Earth and Space SciencesPeking UniversityBeijing 100871China Key Laboratory of Computational Geodynamics University of Chinese Academy of SciencesBeijing 100049China International Research center of Big Data for Sustainable Development Goals Beijing 100094China College of Geography and Remote Sensing Hohai UniversityNanjing 211100China Department of Geography The University of Hong KongHong Kong 999077SARChina Jiangsu Key Laboratory of Atmospheric Environment Monitoring and pollution Control Nanjing 210044China School of Environmental science and Engineering Nanjing University of Information Science&TechnologyNanjing 210044China Collaborative Inno

This paper exp.o.es the evolution of geoscientific inquiry,tracing the p.o.ression from traditional physics-based models to modern data-driven app.o.ches facilitated by significant advancements in artificial intelligence(AI)and data collection *** models,which are grounded in physical and numerical frameworks,p.o.ide robust explanations by explicitly reconstructing underlying physical ***,their limitations in comprehensively capturing Earth’s complexities and uncertainties pose challenges in optimization and real-world *** contrast,contemporary data-driven models,particularly those utilizing machine learning(ML)and deep learning(DL),leverage extensive geoscience data to glean insights without requiring exhaustive theoretical *** techniques have shown p.o.ise in addressing Earth science-related ***,challenges such as data scarcity,computational demands,data privacy concerns,and the“black-box”nature of AI models hinder their seamless integration into *** integration of physics-based and data-driven methodologies into hybrid models presents an alternative *** models,which incorporate domain knowledge to guide AI methodologies,demonstrate enhanced efficiency and performance with reduced training data *** review p.o.ides a comprehensive overview of geoscientific research paradigms,emphasizing untapped op.o.tunities at the intersection of advanced AI techniques and *** examines major methodologies,showcases advances in large-scale models,and discusses the challenges and p.o.pects that will shape the future landscape of AI in *** paper outlines a dynamic field ripe with possibilities,poised to unlock new understandings of Earth’s complexities and further advance geoscience exp.o.ation.

关键词： Earth utilizing landscape

Facile preparation of Ag2ZnGeo4 Flower-like Hierarchical Nanostructure and Its p.o.ocatalytic Activity

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Journal of Materials science & technology 2017年第1期33卷 47-51页

作者： wei Zhou Xiangqing Li Lixia qin Shi-zhao Kang center of Graphene Research School of Chemical and Environmental Engineering Shanghai Institute of Technology Shanghai 201418 China

In this study, Ag2ZnGeo4 flower-like hierarchical nanostructure was prepared using a simple and mild method. The as-prepared samples were characterized with X-ray diffraction, scanning electron micros- copy, transmission electron microscopy, energy dispersive X-ray spectroscopy, UV-vis diffuse reflectance spectroscopy, X-ray p.o.oelectron spectroscopy, and N2 adsorption and desorption isotherms. Mean- while, the p.o.ocatalytic activity of the as-prepared samples was exp.o.ed using Rhodamine B as a model pollutant, The results indicated that the Ag2ZnGeo4 hierarchical nanostructures obtained consisted of nanoplates and nanurods, and adopted spherical flower-like morp.o.ogy. Moreover, the as-prepared Ag2ZnGeo4 hierarchical nanostructure was an efficient and stable visible-light p.o.ocatalyst for the deg- radation of organic dyes in water. After visible light irradiation for 105 rain, the degradation of Rhodamine B was up to 92%. Moreover, the p.o.ocatalytic activity of Ag2ZnGeo4 remained unchanged after three successive cycles,

关键词： Ag2ZnGeo4 Nanostructured and nanocrystalline material Synthesis p.o.ocatalysis