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Recent progress on photoactive nonprecious transition-metal complexes

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Science China Chemistry 2025年第1期68卷 46-95页

作者： Zhong-Liang Gong Hong-Jie Zhang Yan Cheng Jianxun Liu Yuhan Ai Yaqin Li Zhihui Feng Qiong Zhang shaolong Gong Yong Chen Chang-Jiang Yao Yuan-Yuan Zhu Liang-Jin Xu Yu-Wu Zhong CAS Key Laboratory of Photochemistry Institute of ChemistryChinese Academy of SciencesBeijing 100190China State Key Laboratory of Structural Cemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China School of Chemistry and Chemical Engineering Anhui Key Laboratory of Advanced Catalytic Materials and Reaction EngineeringHefei University of TechnologyHefei 230009China State Key Laboratory of Explosion Science and Safety Protection School of Mechatronical EngineeringBeijing Institute of TechnologyBeijing 100081China College of Chemistry and Molecular Sciences Hubei Key Lab on Organic and Polymeric Optoelectronic MaterialsWuhan UniversityWuhan 430072China School of Chemistry and Chemical Engineering Anhui UniversityHefei 230601China Key Laboratory of Photochemical Conversion and Optoelectronic Materials&CAS-HKU Joint Laboratory on New Materials Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China

Photoactive complexes of nonprecious transition metals,mainly including those in the first-row and partially the second-row of the Periodic table of elements,have received increasing attention in view of their low cost and long-term *** are recognized as promising alternatives to noble transition metal complex congeners that have been extensively studied in optoelectronic devices,artificial photosynthesis,photocatalysis,biodiagnostics,and therapeutics,*** review is devoted to a comprehensive summary on the classical and recent advances on photoactive nonprecious transition metal complexes,including photoactive Zr,V,Cr,Mo,and W complexes,Mn complexes and hybrids,Fe,Co,Ni,and Cu complexes,and Zn and Cd complexes and hybrids.A particular focus is given on the molecular design,modulation of photophysical and photochemical properties,and applications of the representative and lately-developed nonprecious metal *** addition,a perspective on the future development in this field is provided at the end of this review.

关键词： photoactive metal complexes earth-abundant metals nonprecious metal complexes luminescence photochemistry

正本清源科学引领——构建参考文献著录通用国际规范体系的现实意义与路径

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天津科技 2025年第1期52卷 5-14页

作者：胡少龙天津财经大学天津300222

在回顾、梳理和分析参考文献著录的必要性和现实意义、国内外参考文献著录现状和问题的基础上,探讨参考文献著录国际规范体系的逻辑本质,分析构建参考文献著录通用国际规范体系应遵循的原则及其潜在的建构和管理责任主体,并阐述平台运... 详细信息

在回顾、梳理和分析参考文献著录的必要性和现实意义、国内外参考文献著录现状和问题的基础上,探讨参考文献著录国际规范体系的逻辑本质,分析构建参考文献著录通用国际规范体系应遵循的原则及其潜在的建构和管理责任主体,并阐述平台运行架构设计与基本发展路径。

关键词：参考文献著录参考文献著录通用国际规范体系

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高熵合金高周和低周疲劳行为研究进展

材料导报 2025年第3期39卷 196-207页

作者：宋少龙王晓地张哲任学冲栾本利北京科技大学国家材料服役安全科学中心北京100083

高熵合金因具有优异的性能,如高强度、高韧性、良好的耐磨性和耐蚀性等,成为材料领域的研究热点之一。随着对高熵合金基本力学性能研究的深入,其长期服役性能——疲劳性能逐渐受到关注。根据目前文献报道,高熵合金具有优良的抗疲劳性能... 详细信息

高熵合金因具有优异的性能,如高强度、高韧性、良好的耐磨性和耐蚀性等,成为材料领域的研究热点之一。随着对高熵合金基本力学性能研究的深入,其长期服役性能——疲劳性能逐渐受到关注。根据目前文献报道,高熵合金具有优良的抗疲劳性能,具备成为工程材料的潜力。然而,目前高熵合金疲劳研究体系众多,且制备工艺方法和微观结构等复杂多样,导致其疲劳分散性很大。因此,有必要对相关工作进行归纳和总结,加深有关认识和理解,从而推动高熵合金的进一步发展。本文主要从不同体系高熵合金的微观结构出发,详细介绍了疲劳研究的最新成果,总结并对比了高熵合金的高周和低周疲劳性能及相应的疲劳机理,最后对目前研究中存在的问题进行了说明以及对未来发展方向进行了展望。

关键词：高熵合金微观结构疲劳行为疲劳机理

Pyrazine-fused polycyclic aromatic hydrocarbons towards efficient multiple-resonance narrowband deep-blue emission

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Science China Chemistry 2025年第3期 1018-1025页

作者： Yajie Wang Wei Yang He Zhang Nengquan Li shaolong Gong Xiang Gao Chuluo Yang Department of Chemistry Renmin Hospital of Wuhan UniversityWuhan University Shenzhen Key Laboratory of New Information Display and Storage Materials College of Materials Science and EngineeringShenzhen University College of Biological and Pharmaceutical Science Hubei Key Laboratory of Natural Products Research and DevelopmentChina Three Gorges University Department of Pharmacy Renmin Hospital of Wuhan University

Developing organic multiple-resonance(MR) deep-blue emitters with narrow full widths at half maximum(FWHMs) is crucial for enhancing the color purity of organic light-emitting diodes(OLEDs).However,the exploration of new MR cores remains very limited to ***,redshifting the emission color of MR emitters is also a formidable ***,characterized by its planar and rigid structure,exhibits a strong electronegativity,which may make it a promising candidate for constructing MR emitters with a red shifted emission compared to indolo[3,2,1-jk]carbazole(ICz)-based MR ***,a series of polycyclic aromatic hydrocarbons(PAHs) with MR characteristics are designed and synthesized by integrating a pyrazine core with various electron-donating segments,which exhibit the narrowband deep-blue emission peaks ranging from 423 to 459 nm with FWHMs < 50 nm in *** is demonstrated that increasing donor strength and changing meta-to paraoriented nitrogen atom can induce the bathochromic *** investigations reveal that the non-bonding orbital characteristic of pyrazine suppress the undesired stretching vibration and promote resonance *** optimized deep-blue OLEDs fabricated with the pyrazine-embedded MR emitters demonstrate a high external quantum efficiency(EQE) of 23.5%,and narrowband emission with an electroluminescence peak at 454 nm.

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A review on ex situ catalytic fast pyrolysis of biomass

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Frontiers of Chemical Science and Engineering 2014年第3期8卷 280-294页

作者： shaolong WAN Yong WANG Center for Biomass Refining School of Chemical Biological and Materials Engineering The University of Oklahoma Norman OK 73019 USA Voiland School of Chemical Engineering and Bioengineering Washington State University Pullman WA 99164 USA

Catalytic fast pyrolysis （CFP） is deemed as the most promising way to convert biomass to transportation fuels or value added chemicals. Most works in literature so far have focused on the in situ CFP where the catalysts are packed or co-fed with the feedstock in the pyrolysis reactor. However, the ex situ CFP with catalysts separated from the pyrolyzer has attracted more and more attentions due to its unique advantages of individually optimizing the pyrolysis conditions and catalyst performances. This review compares the differences between the in situ and ex situ CFP operation, and summarizes the development and progress of ex situ CFP applications, including the rationale and performances of different catalysts, and the choices of suitable ex situ reactor systems. Due to the complex composition of bio-oil, no single approach was believed to be able to solve the problems completely among all those existing technologies. With the increased understanding of catalyst performances and reaction process, the recent trend toward an integration of biomass or bio-oil fractionation with subsequent thermo/biochemical conversion routes is also discussed.

关键词： catalytic fast pyrolysis ex situ catalysts

Linear stability theory with the equivalent spanwise wavenumber correction in 3D boundary layers

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Applied Mathematics and Mechanics(English Edition) 2019年第3期40卷 407-420页

作者： Runjie SONG shaolong ZHANG Jianxin LIU Laboratory for High-Speed Aerodynamics Tianjin University Institute of Fluid Physics China Academy of Engineering Physics

The prediction on small disturbance propagation in complex three-dimensional(3D) boundary layers is of great significance in transition prediction methodology, especially in the aircraft design. In this paper, the linear stability theory(LST) with the equivalent spanwise wavenumber correction(ESWC) is proposed in order to accurately predict the linear evolution of a disturbance in a kind of boundary layer flow with a vital variation in the spanwise direction. The LST with the ESWC takes not only the scale of the mean flow with the significant variation but also the wavenumber evolution of the disturbance itself. Compared with the conventional LST, the results obtained by the new method are in excellent agreement with those of the numerical simulations. The LST with the ESWC is an effective method on the prediction of the disturbance evolution in 3D boundary layers, which improves the prediction of the LST in the applications to complex 3D boundary layers greatly.

关键词： three-dimensional(3D)boundary layer prediction of disturbance propagation equivalent spanwise wavenumber linear stability theory(LST) numerical simulation

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负面绩效反馈下员工绩效改进动机的人机比较

心理学报 2025年第2期57卷 298-314,I0005-I0008页

作者：王国轩龙立荣李绍龙孙芳望家晴黄世英子华中科技大学管理学院武汉430074 武汉大学经济与管理学院武汉430072 湖北经济学院工商管理学院武汉430205

负面绩效反馈对员工学习和绩效提升具有重要意义,然而其往往难以被员工所接受。随着人工智能技术(artificial intelligence,AI)逐渐应用于组织情境中,探索AI提供负面绩效反馈对员工行为及态度的影响成为重要议题。采用4个递进式实验探索... 详细信息

负面绩效反馈对员工学习和绩效提升具有重要意义,然而其往往难以被员工所接受。随着人工智能技术(artificial intelligence,AI)逐渐应用于组织情境中,探索AI提供负面绩效反馈对员工行为及态度的影响成为重要议题。采用4个递进式实验探索了AI与人类管理者提供负面绩效反馈对个体绩效改进动机的差异化影响及机制。实验1~3采取经典的虚假反馈的策略,发现相较于人类管理者,AI提供负面绩效反馈引发个体更高水平的绩效改进动机(实验1)。并且,在客观任务中,AI(较人类管理者)提供负面绩效反馈引发个体更高水平的绩效改进动机;而在主观任务中,结果则相反(实验2)。此外,个体对于负面绩效反馈的内部归因解释了上述关系发生的内在机制(实验3)。实验4则采用相对真实的负面绩效反馈情境,重复了先前3个实验的研究发现。该研究对于组织为何以及何时应用AI提供负面绩效反馈提供了一定的启示。

关键词：负面绩效反馈人工智能绩效改进动机内部归因任务类型

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Effect of wall-cooling on Mack-mode instability in high speed flat-plate boundary layers

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Applied Mathematics and Mechanics(English Edition) 2016年第9期37卷 1219-1230页

作者： shaolong ZHANG Jianxin LIU Jisheng LUO Department of Mechanics Tianjin University

The instability of the Mack mode is destabilized by wall-cooling in a high speed boundary layer. The aim of this paper is to study the mechanism of the wall cooling effect on the Mack mode instability by numerical methods. It is shown that the wall-cooling can destabilize the Mack mode instability, similar to the previous conclusions with the exception that the Mack mode instability can be stabilized by wall-cooling if the wall temperature is extremely low. The reversed wall temperature is related to a freestream condition. If the Mach number increases to a large enough value, e.g., about 7, the reversed wall temperature will tend to be zero. It seems that the Mack mode instability is determined by the region between the boundary layer edge and the critical layer. When the wall temperature decreases, this region becomes wider, and the boundary layer becomes more unstable. Additionally, a relative supersonic unstable mode can be observed when the velocity of the critical layer is less than 1 - liMa or is cancelled by the wall-cooling effect. These results provide a deeper understanding on the wall-cooling effect in high speed boundary layers.

关键词： stability wall-cooling high speed boundary layer Mack mode instability

Linear spatial instability analysis in 3D boundary layers using plane-marching 3D-LPSE

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Applied Mathematics and Mechanics(English Edition) 2016年第8期37卷 1013-1030页

作者： Jianxin LIU shaolong ZHANG Song FU Department of Mechanism Tianjin University School of Aerospace Engineering Tsinghua University

It is widely accepted that a robust and efficient method to compute the linear spatial amplified rate ought to be developed in three-dimensional （3D） boundary layers to predict the transition with the e^N method, especially when the boundary layer varies significantly in the spanwise direction. The 3D-linear parabolized stability equation （3D- LPSE） approach, a 3D extension of the two-dimensional LPSE （2D-LPSE）, is developed with a plane-marching procedure for investigating the instability of a 3D boundary layer with a significant spanwise variation. The method is suitable for a full Mach number region, and is validated by computing the unstable modes in 2D and 3D boundary layers, in both global and local instability problems. The predictions are in better agreement with the ones of the direct numerical simulation （DNS） rather than a 2D-eigenvalue problem （EVP） procedure. These results suggest that the plane-marching 3D-LPSE approach is a robust, efficient, and accurate choice for the local and global instability analysis in 2D and 3D boundary layers for all free-stream Mach numbers.

关键词： three-dimensional linear parabolized stability equation (3D-LPSE) bi-global instability three-dimensional (3D) boundary layer Gortler fow crossflow vortex