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Controlling the Balance of Photoluminescence and Photothermal Effect in Cyanostilbene-Based Luminescent Liquid Crystals

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Chinese Journal of Chemistry 2022年第8期40卷 902-910页

作者： Xiang-Jian Cao Wei Li Jiahua Li Lin Zou xing-wang liu Xiang-Kui Ren Zhen-Qiang Yu School of Chemical Engineering and Technology State Key Laboratory of Chemical EngineeringTianjin UniversityTianjin 300350China College of Chemistry and Environmental Engineering Institute of Low-dimensional Materials Genome InitiativeShenzhen UniversityShenzhenGuangdong 518071China

Molecular motions of the luminescent liquid crystals(LLCs)show a significant effect on fluorescent emission and heat *** this article,a series of cyanostilbene-based LLCs(CSs:CS1-6,CS1-12,CS2-6 and CS2-12)are synthesized to investigate how the pho-toluminescence and photothermal effect *** these materials,the mesogens peripheried by single alkyl chains formed enantiotropic nematic(CS1-6)or smectic C(CS1-12)phase with different alkyl tail *** the single aliphatic chain is re-placed by mini-dendrons,room temperature(RT)monotropic hexagonal columnar phase(CS2-12)or molecular liquid(CS2-6)is *** results revealed that all these materials exhibited high efficiency emission with the highest quantum yield reaching 59.0%.The photoluminescence and photothermal effect can be effectively tuned by dispersing CSs into a commercially available RT liquid crystal matrix 8CB,which output significantly improved photothermal conversion efficiency of 63.2%.Furthermore,the pho-tothermal can rapidly trigger the Smectic A-Nematic-Isotropic sequence transitions of 8CB doped with *** work paves a way of adjusting the balance of photoluminescence and photothermal properties of the LLC materials.

关键词： Aggregation-induced emission Liquid crystals Molecular motions Photothermal effect Phase transitions

A gated strategy stabilizes room-temperature phosphorescence

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Aggregate 2023年第4期4卷 224-229页

作者： Kaizhi Gu Zhengong Meng xing wang liu Yue Wu Xin Qi Yiran Ren Zhen-Qiang Yu Ben Zhong Tang College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhenChina Institute for Advanced Study Central South UniversityChangshaChina School of Science and Engineering Shenzhen Institute of Aggregate Science and TechnologyThe Chinese University of Hong KongShenzhenChina

Room-temperature phosphorescence(RTP)of purely organic materials is easily quenched with unexpected purposes because the excited triplet state is extremely susceptible to external *** to stabilize the RTP property of purely organic luminogens is still challenging and considered as the bottleneck in the further advancement of the bottom-up ***,we describe a gated strategy that can effectively harness RTP by employing complexation/dissociation with *** to the order-disorder transition orientation of intermolecular packing,the RTP of organic molecules 2,4,6-tris(4′-bromo-[1,1′-biphenyl]-4-yl)-1,3,5-triazine(Br-TRZ)will easily vanish upon mechanical ***,by enhancing its intramolec-ular charge transfer effect,the protonated Br-TRZ stubbornly possesses an obvious RTP under external grinding,whatever in the ordered or disordered intermolec-ular arrangement ***,the“Lock”gate of RTP was achieved in the protonated Br-TRZ *** with theoretical calculation analy-sis,the enhanced charge transfer effect can narrow the energy gap singlet-tripletsignificantly,and stabilize the RTP property of triazine derivative ***-thermore,the locked RTP can be tuned via proton and counterions repeatedly and show excellent *** gated RTP concept provides an effective strategy for stabilizing the RTP emission of purely organic systems.

关键词： gated effect grinding molecular packing protonation room-temperature phosphorescence

Rational modulation of fluorophosphate cathode by anionic groups to reduce the polarization behavior for fast-charging sodium-ion batteries

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Journal of Energy Chemistry 2025年第1期100卷 509-521页

作者： Xinyuan wang Fan Zhang xingyu Zhou Qian wang Changyu liu Yangyang liu Hui wang Xiaojie liu Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education College of Chemistry & Materials Science Northwest University

Na3V2（PO4）2O2F （VP） is recognized as a promising cathode material for sodium-ion batteries due to its stable structural framework and high specific *** functional theory （DFT） and finite element simulations show that incorporating SO42-into VP decreases its band gap,lowers the migration energy barrier,and ensures a uniform Na+concentration gradient and stress distribution during charge and discharge ***,the average Na+diffusion coefficient of Na3V2（PO4）1.95（SO4）0.05O2F（VPS-1） is roughly double that of VP,leading to enhanced rate capability (80 C,75.5 mAh g-1) and cycling stability (111.0 mAh g-1capacity after 1000 cycles at 10 C current density) for ***-1 exhibits outstanding fast-charging capabilities,achieving an 80%state of charge in just 8.1 *** assembled VPS-1//SbSn/NPC full cell demonstrated stable cycling over 200 cycles at a high 5 C current,maintaining an average coulombic efficiency of 95.35%.

关键词： Anionic group modulation Polarization behavior Fast-charging Sodium-ion battery Fluorophosphate Cathode

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装甲车辆重载齿轮综合强化方法研究现状

材料导报 2017年第11期31卷 86-94页

作者：邢壮邢志国王海斗刘珂璟装甲兵工程学院装备再制造技术国防科技重点实验室北京100072

机动性是装甲车辆的重要性能指标,对传动系统有着极高的要求。工况复杂、服役环境特殊的重载齿轮是装甲车辆传动系统的重要组成部分,如何有效对其进行强化一直是国内外的研究热点。材料的选择、优化及新材料开发是生产强化重载齿轮的基... 详细信息

机动性是装甲车辆的重要性能指标,对传动系统有着极高的要求。工况复杂、服役环境特殊的重载齿轮是装甲车辆传动系统的重要组成部分,如何有效对其进行强化一直是国内外的研究热点。材料的选择、优化及新材料开发是生产强化重载齿轮的基础,选用合理的热处理工艺可提升齿轮的综合性能,结合有效的表面强化技术能延长疲劳寿命。从以上3个方面出发,分析了重载齿轮生产流程中关键的强化阶段,阐述了重载齿轮综合强化方法的进展,讨论了具有应用前景的新方法,并就今后重载齿轮的发展提出了若干建议。

关键词：重载齿轮齿轮材料热处理表面强化

Molecular Structure Tailoring of Organic Spacers for High‑Performance Ruddlesden–Popper Perovskite Solar Cells

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Nano-Micro Letters 2025年第2期17卷 314-357页

作者： Pengyun liu Xuejin Li Tonghui Cai Wei xing Naitao Yang Hamidreza Arandiyan Zongping Shao Shaobin wang Shaomin liu School of Materials Science and Engineering State Key Laboratory of Heavy Oil ProcessingChina University of Petroleum(East China)Qingdao 266580People’s Republic of China School of Chemistry and Chemical Engineering Shandong University of TechnologyZibo 255049People’s Republic of China Centre for Applied Materials and Industrial Chemistry(CAMIC) School of ScienceRMIT UniversityMelbourneVic 3000Australia WA School of Mines:Minerals Energy and Chemical Engineering(WASM‑MECE)Curtin UniversityPerthWA 6102Australia School of Chemical Engineering The University of AdelaideAdelaideSA 5005Australia School of Engineering Great Bay UniversityDongguan 523000People’s Republic of China

Layer-structured Ruddlesden–Popper(RP)perovskites(RPPs)with decent stability have captured the imagination of the photovoltaic research community and bring hope for boosting the development of perovskite solar cell(PSC)***,two-dimensional(2D)or quasi-2D RP PSCs are encountered with some challenges of the large exciton binding energy,blocked charge transport and poor film quality,which restrict their photovoltaic ***,these issues can be readily resolved by rationally designing spacer cations of *** review mainly focuses on how to design the molecular structures of organic spacers and aims to endow RPPs with outstanding photovoltaic *** firstly elucidated the important roles of organic spacers in impacting crystallization kinetics,charge transporting ability and stability of *** we brought three aspects to attention for designing organic ***,we presented the specific molecular structure design strategies for organic spacers of RPPs aiming to improve photovoltaic performance of RP *** proposed strategies in this review will provide new avenues to develop novel organic spacers for RPPs and advance the development of RPP photovoltaic technology for future applications.

关键词： Ruddlesden-Popper perovskites Low-dimensional perovskite solar cells Organic spacers Molecular structure Design strategies

Pulmonary nodules: optimal slice thickness of CT in revealing bronchial imageology

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The Chinese-German Journal of Clinical Oncology 2011年第11期10卷 626-631页

作者： Shenjiang Li Changcheng Li xing wang Debin liu Wenjie Liang Feng Zhu Yan Zhu Xuefeng Cui Fangang Hu Yuanyuan wang Department of Imageology The Eighty-eighth Military Hospital Tai＇an 271000 China

Objective： The aim of our study was to determine an optimal slice thickness that was efficient in revealing bronchial imageology of pulmonary nodules （PNs） on multi-slice spiral computed tomography （MSCT） images preliminarily. Methods： Fifty-four patients with 62 PNs （diameter 〈 3 cm） underwent multidetector-row computed tomography of the chest in a single-breath-hold technique. The raw data were acquired with a collimation of 0.625 mm. Three sets of contiguous im- ages were reconstructed with 1-, 2-, and 5-mm slice thickness, respectively. Bronchial imageology of SPNs on the CT images presented in 1-, 2-, and 5-mm slice thickness was compared. Using the 1-mm sections as the gold standard, an optimal slice thickness in revealing bronchial imageology of PNs was determined. Results： Bronchial imageology of PNs on the CT images presented in 1 mm slice thickness involved 85 bronchi （35 second-fourth generation bronchi; 50 fifth-eighth generation bronchi）. Bronchial imageology on 2-mm-thick sections was as same as that on I-mm-thick sections in 34 second- fourth generation bronchi. No statistically significant difference in number of second- fourth generation bronchi with same bronchial imageology was found between that on 2-mm-thick images and I-mm-thick images （P = 0.836 〉 0.05）. Bronchial imageology on 5-mm-thick sections was as same as that on 1-mm-thick sections in 24 second-fourth generation bronchi. There was statistically significant difference in number of second-fourth generation bronchi with same bronchial imageology between that on 5-mm-thick images and 1-mm-thick images （P = 0.026 〈 0.05）. Bronchial imageology on 2-mm-thick sections was as same as that on 1-mm-thick sections in 38 fifth-eighth generation bronchi. There was statistically significant difference in number of fifth-eighth generation bronchi with same bronchial imageology between that on 2-mm-thick images and 1-mm- thick images （P = 0.029 〈 0.05）. Bronchial imageology on 5-mm-thick images was as

关键词： tomography, X-ray computed Coin lesion, pulmonary bronchi

Single-cell omics: experimental workflow, data analyses and applications

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Science China Life Sciences 2025年第1期68卷 5-102页

作者： Fengying Sun Haoyan Li Dongqing Sun Shaliu Fu Lei Gu Xin Shao Qinqin wang Xin Dong Bin Duan Feiyang xing Jun Wu Minmin Xiao Fangqing Zhao Jing-Dong J.Han Qi liu Xiaohui Fan Chen Li Chenfei wang Tieliu Shi Department of Clinical Laboratory the Affiliated Wuhu Hospital of East China Normal University (The Second People's Hospital of Wuhu City) Pharmaceutical Informatics Institute College of Pharmaceutical SciencesZhejiang University Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration (Tongji University) Ministry of EducationOrthopaedic DepartmentTongji HospitalBioinformatics DepartmentSchool of Life Sciences and TechnologyTongji University Frontier Science Center for Stem Cells School of Life Sciences and TechnologyTongji University Translational Medical Center for Stem Cell Therapy and Institute for Regenerative Medicine Shanghai East HospitalBioinformatics DepartmentSchool of Life Sciences and TechnologyTongji University Research Institute of Intelligent Computing Zhejiang Lab Shanghai Research Institute for Intelligent Autonomous Systems Center for Single-cell Omics School of Public HealthShanghai Jiao Tong University School of Medicine National Key Laboratory of Chinese Medicine Modernization Innovation Center of Yangtze River DeltaZhejiang University Center for Bioinformatics and Computational Biology Shanghai Key Laboratory of Regulatory Biologythe Institute of Biomedical Sciences and School of Life SciencesEast China Normal University Beijing Institutes of Life Science Chinese Academy of Sciences Peking-Tsinghua Center for Life Sciences Academy for Advanced Interdisciplinary StudiesCenter for Quantitative Biology (CQB)Peking University Zhejiang Key Laboratory of Precision Diagnosis and Therapy for Major Gynecological Diseases Women's HospitalZhejiang University School of Medicine Key Laboratory of Advanced Theory and Application in Statistics and Data Science-MOE School of StatisticsEast China Normal University

Cells are the fundamental units of biological systems and exhibit unique development trajectories and molecular features. Our exploration of how the genomes orchestrate the formation and maintenance of each cell, and control the cellular phenotypes of various organismsis, is both captivating and intricate. Since the inception of the first single-cell RNA technology, technologies related to single-cell sequencing have experienced rapid advancements in recent years. These technologies have expanded horizontally to include single-cell genome, epigenome,proteome, and metabolome, while vertically, they have progressed to integrate multiple omics data and incorporate additional information such as spatial sc RNA-seq and CRISPR screening. Single-cell omics represent a groundbreaking advancement in the biomedical field,offering profound insights into the understanding of complex diseases, including cancers. Here, we comprehensively summarize recent advances in single-cell omics technologies, with a specific focus on the methodology section. This overview aims to guide researchers in selecting appropriate methods for single-cell sequencing and related data analysis.

关键词： single-cell sequencing genome epigenome proteomics metabolomics multimodal spatial transcriptomics CRISPR screening

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珊瑚礁地基工程特性现场试验研究

岩土力学 2017年第7期38卷 2065-2070,2079页

作者：王新志王星刘海峰孟庆山朱长歧中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室湖北武汉430071 中国科学院大学北京100049

珊瑚礁不同地貌带有着不同的工程地质特征和力学特性。为探究珊瑚礁地基的工程力学特性及其发育规律,在西沙永兴岛不同地貌单元开展了浅层平板载荷试验、深层螺旋板载荷试验、压实度测试以及回弹模量试验,获取了珊瑚礁不同地貌的地基承... 详细信息

珊瑚礁不同地貌带有着不同的工程地质特征和力学特性。为探究珊瑚礁地基的工程力学特性及其发育规律,在西沙永兴岛不同地貌单元开展了浅层平板载荷试验、深层螺旋板载荷试验、压实度测试以及回弹模量试验,获取了珊瑚礁不同地貌的地基承载力、变形模量、回弹模量等工程力学参数。试验结果表明:人工填筑的钙质土地基承载力和变形模量明显高于天然形成的礁坪相地基和沙坝地基,其承载力特征值可达320~360 k Pa,变形模量在95~200 MPa之间,且地基的沉降量很小,满足一般低层建筑物对地基承载力和变形的要求;在荷载作用下,钙质土地基的沉降是瞬时完成的,载荷试验可采用快速加载法;在地下水位以上地基承载力随着深度增大逐渐增加,但在地下水位以下承载力和变形模量明显减小。钙质土地基压实度在87%以上时回弹模量达到472~730 MPa,且回弹模量随着压实度的增大而增大。

关键词：平板载荷试验珊瑚礁地基承载力变形模量回弹模量

Flexible molecules dedicate to release strain of inverted inorganic perovskite solar cell

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Journal of Energy Chemistry 2025年第1期100卷 87-93页

作者： Hongrui Sun Sanlong wang Pengyang wang Yali liu Shanshan Qi Biao Shi Ying Zhao Xiaodan Zhang Institute of Photoelectronic Thin Film Devices and Technology Renewable Energy Conversion and Storage Center State Key Laboratory of Photovoltaic Materials and CellsNankai University Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin Haihe Laboratory of Sustainable Chemical Transformations Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)

The tensile strain in inorganic perovskite films induced by thermal annealing is one of the primary factors contributing to the inefficiency and instability of inorganic perovskite solar cells （IPSCs）,which reduces the defect formation ***,a flexible molecule 5-maleimidovaleric acid （5-MVA） was introduced as a strain buffer to release the residual strain of *** anhydride and carboxyl groups in 5-MVA interact strongly with the uncoordinated Pb2+through Lewis acid-base reaction,thus tightly“pull”the perovskite *** in-between soft carbon chain increased the structural flexibility of CsPbI2.85Br0.15perovskite materials,which effectively relieved the intrinsic internal strain of CsPbI2.85Br0.15,resisted the corrosion of external strain,and also reduced the formation of defects such as VIand *** addition,the introduction of 5-MVA improved crystal quality,passivated residual defects,and narrowed energy level ***,power conversion efficiency （PCE） of NiOxbased inverted IPSCs increased from 19.25% to 20.82% with the open-circuit voltage enhanced from 1.164 V to 1.230 *** release of strain also improved the stability of CsPbI2.85Br0.15perovskite films and devices.

关键词： Inverted inorganic perovskite solar cells Flexible molecules Strain release Crystallization Energy barrier High PCE