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Recent progress on photoactive nonprecious transition-metal complexes

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 Chemistry Chinese Academy of Sciences State Key Laboratory of Structural Cemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences School of Chemistry and Chemical Engineering Anhui Key Laboratory of Advanced Catalytic Materials and Reaction EngineeringHefei University of Technology State Key Laboratory of Explosion Science and Safety Protection School of Mechatronical Engineering Beijing Institute of Technology College of Chemistry and Molecular Sciences Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Wuhan University School of Chemistry and Chemical Engineering Anhui University Key Laboratory of Photochemical Conversion and Optoelectronic Materials & CAS-HKU Joint Laboratory on New Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences

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 sustainability. They 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, etc. This 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 complexes. In 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

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以系统观念推进进一步全面深化改革的原因廓清、内在要求与实践进路

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东北师大学报（哲学社会科学版） 2025年第1期 1-9页

作者：李效东杜玉中唐鑫北京交通大学马克思主义学院北京100044

系统观念是基础性的思想方法和工作方法。进一步全面深化改革是一项复杂的系统工程,需要以系统观念来把握改革的全局与重点、整体与部分、联系与区别。在进一步全面深化改革中坚持系统观念是基于马克思主义世界观与方法论的理论指导,是... 详细信息

系统观念是基础性的思想方法和工作方法。进一步全面深化改革是一项复杂的系统工程,需要以系统观念来把握改革的全局与重点、整体与部分、联系与区别。在进一步全面深化改革中坚持系统观念是基于马克思主义世界观与方法论的理论指导,是基于中国共产党领导改革开放历史经验的深刻总结,是应对进一步全面深化改革中多种复杂问题的必然要求。以系统观念推进进一步全面深化改革的内在要求关键在于坚持系统思考、坚持系统谋划、坚持系统部署、坚持系统推进与坚持系统集成。在推进进一步全面深化改革系统工程的实践进路中,需要坚持党对进一步全面深化改革系统的领导,在系统整体上突出进一步全面深化改革的着力重点,在系统全局中正确处理好进一步全面深化改革的重大关系。

关键词：系统观念进一步全面深化改革系统工程

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Handedness-inverted polymorphic helical assembly and circularly polarized luminescence of chiral platinum complexes

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Science China Chemistry 2021年第5期64卷 788-799页

作者： zhong-Liang Gong yu-Wu zhong Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of PhotochemistryCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049China

Circularly polarized luminescence(CPL)materials have potential applications in three-dimensional(3D)displays,quantum encryption,and optical *** development of single-component CPL materials with polymorphic assembly and handedness inversion remains a significant ***,we present the access of such materials by controlling the underlying assembly pathway of well-designed chiral emitters.A pair of enantiomeric platinum complexes(R)-1 and(S)-1 decorated with a chiralα-methylbenzyl isocyanide ligand were *** using the mixed-solvent(THF/n-hexane,THF=tetrahydrofuran)or high-concentration condition,these complexes were found to assemble via a cooperative or isodesmic pathway with significantly enhanced yellow or red emission,*** aggregate samples obtained via these conditions show efficient CPL(dissymmery factor|glum|>0.02,emission quantum yieldΦ>20%).Interestingly,different assembly pathway leads to helical nanoribbons or nanofibers with opposite handedness from the complex with the same molecular *** has been unambiguously and consistently manifested by circular dichroism and CPL spectral analysis and transmission electron,scanning electron,and atomic force microscope *** work demonstrates an appealing example of constructing polymorphic helical architectures with highly efficient CPL and inverted handedness thanks to the excellent assembly and emission of platinum complexes.

关键词： self-assembly nanostructures circularly polarized luminescence chiral materials platinum complexes

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Urea-bridged diferrocene: structural, electrochemical, and spectroelectrochemical studies

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Science China Chemistry 2015年第9期58卷 1444-1450页

作者： zhong-Liang Gong yu-Wu zhong Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Photochemistry Institute of Chemistry Chinese Academy of Sciences

Urea-bridged diferrocene derivatives N,N?-diferrocenylurea(1) and N,N?-dimethyl-N,N?-diferrocenylurea(2) were prepared and characterized. Single-crystal X-ray analysis shows that Compound 1 has a trans-trans linear conformation whereas Compound 2 has a trans-cis conformation. Both compounds display two consecutive redox couples with, respectively, E1/2 of +0.29 and +0.42 V vs. Ag/Ag Cl for 1 and +0.31 and +0.50 V for 2. Spectroelectrochemical studies show the presence of distinct intervalence charge transfer(IVCT) transitions for the one-electron-oxidized mixed-valent Compound 1+, with an estimated electronic coupling parameter of 190 cm?1. By contrast, the one-electron-oxidized Compound 2+ shows much weaker IVCT transitions.

关键词： mixed-valent compounds ferrocene electrochemistry urea spectroelectrochemistry

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Photofunction-Directed Coordination Molecular Engineering

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Chinese Journal of Chemistry 2021年第3期39卷 543-549页

作者： yu-Wu zhong Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of PhotochemistryCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China School of Chemical Sciences University of Chinese Academy of SciencesBejjing 100049China

Molecular engineering has emerged as a highly interdisciplinary field of study on function-directed molecular design,material synthesis,and property optimization,accompanied by a deep understanding of the structure-property *** this review,our recent progress on the design and preparations of photofunctional metal complexes and related materials is summarized from the perspective of coordination molecular *** particular,a series of cyclometalated diruthenium complexes with near-infrared(NIR)electrochromic property have been synthesized by engineering the bridging ligand structures.A group of ruthenium-amine conjugated complexes with multistage NIR electrochromism are obtained on the basis of a multicenter *** engineering the ligand structures,a series of new ruthenium and platinum complexes are synthesized to show switchable luminescence in response to various *** addition,photoluminescent ruthenium,iridium,and platinum complexes are assembled to afford micro/nanocrystals with well-defined morphology and luminescent properties.

关键词： Photochemistry Photophysics Transitional metals Metal-metal interactions Conjugation Luminescence

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DISPERSION OF CYLINDRICAL PARTICLES IN TURBULENT FLOWS

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Journal of Hydrodynamics 2004年第1期16卷 1-6页

作者： GAOZhen-yu LINJian-zhong DepartmentofMechanics StateKeyLaboratoryofFluidPowerTransmissionandControlZhejiangUniversityHangzhou310027China

With consideration of the Stokes drag and virtual mass force, the equationsfor mean and fluctuating velocities in rotation and translation were given for rigid cylindricalparticles moving in a turbulent flow. Then the rotational and translational dispersion coefficientsof particle were derived. The relationships between the dispersion, coefficients and flow lengthscale as well as particle characteristic parameters were analyzed. The resulting dispersioncoefficients were proved to decrease as the particle length increases. The conclusions are helpfulfor the further research on the motion of cylindrical particles in turbulent flows.

关键词： cylindrical particles turbulence dispersion coefficient

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汉麻籽多肽靶向抑制胰脂肪酶/胆固醇酯酶的分子作用机制

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食品科学 2025年第2期46卷 38-49页

作者：尹浩朱将雄赵海云钟宇王丹凤邓云上海交通大学农业与生物学院上海200240 上海交通大学云南(大理)研究院云南大理671000 云南省大理白族自治州检验检测院云南大理671000

采用酶活动力学、联合抑制、荧光光谱、等温滴定量热法和分子对接等技术系统探究两种多肽(APAM和RLPA)对胰脂肪酶(pancreatic lipase,PL)和胆固醇酯酶(cholesterol esterase,CE)活性调控效果及分子结合机制。结果表明,RLPA对PL和CE具有... 详细信息

采用酶活动力学、联合抑制、荧光光谱、等温滴定量热法和分子对接等技术系统探究两种多肽(APAM和RLPA)对胰脂肪酶(pancreatic lipase,PL)和胆固醇酯酶(cholesterol esterase,CE)活性调控效果及分子结合机制。结果表明,RLPA对PL和CE具有更强的抑制活性,其半抑制浓度分别为(79.62±3.20)μmol/L和(301.27±14.40)μmol/L。抑制动力学分析表明APAM对两种酶的抑制机制为竞争性抑制,而RLPA则为混合性抑制。联合抑制表明APAM和RLPA在低浓度下均可与奥利司他协同抑制PL和CE,但在高浓度下协同作用减弱,甚至出现拮抗现象。荧光光谱结果表明两种多肽可以通过与PL和CE发生结合产生静态猝灭,改变了酶中脂肪族氨基酸的疏水环境。等温滴定量热法证明多肽与酶的结合过程是自发且放热,主要通过氢键和静电相互作用实现。分子对接模拟进一步分析表明氢键、盐桥和阳离子-π相互作用在多肽与酶的结合中起着至关重要的作用。这项研究丰富了对多肽与PL和CE的相互作用机制的认识,为开发基于汉麻籽蛋白的功能性食品提供了科学依据。

关键词：脂质消化酶抑制机制荧光光谱等温滴定量热法分子模拟

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A Constrained Interval-Valued Linear Regression Model:A New Heteroscedasticity Estimation Method

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Journal of Systems Science & Complexity 2020年第6期33卷 2048-2066页

作者： zhong yu ZHANG zhongzhan LI Shoumei Beijing University of Technology College of Applied SciencesBeijing 100020China

Linear regression models for interval-valued data have been widely *** literatures are to split an interval into two real numbers,i.e.,the left-and right-endpoints or the center and radius of this interval,and fit two separate real-valued or two dimension linear regression *** paper is focused on the bias-corrected and heteroscedasticity-adjusted modeling by imposing order constraint to the endpoints of the response interval and weighted linear least squares with estimated covariance matrix,based on a generalized linear model for interval-valued data.A three step estimation method is *** conclusions and numerical evaluations show that the proposed estimator has higher efficiency than previous estimators.

关键词： Conditional maximum likelihood estimation interval-valued data order constraint truncated normal distribution weighted least squares estimation

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Researches on the Structure and Properties of Mullite Solid Solution Made from Industrial Waste

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Chinese Journal of Structural Chemistry 2006年第8期25卷 965-970页

作者： RUAN yu-zhong yu Yan WU Ren-Ping College of Materials Science and Engineering Fuzhou University Fuzhou 350002 China

The waste slag from aluminum profile factory and silicon fine powder from ferroalloy factory were utilized as the main raw materials to synthesize mullite solid solution Al4＋2xSi2-xO10-x/2, whose defect formation mechanism, crystalline phase composition, crystal cell parameters, microstructures and morphologies were characterized in detail by XRD and SEM. The results show that because of the ultrafine particle size of the materials, the content of mullite solid solution synthesized by this method is higher than that by regular method. Keywords： waste slag from aluminum factory, silicon fine powder, mullite, solid solution

关键词： waste slag from aluminum factory silicon fine powder mullite solid solution

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Studies on the Structure and Properties of Multiphase Al_2O_3 Abrasion-resistant Ceramics

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Chinese Journal of Structural Chemistry 2006年第7期25卷 805-810页

作者： WU Ren-Ping yu Yan RUAN yu-zhong College of Materials Science and Engineering Fuzhou University Fuzhou 350002 China

The Al2O3 abrasion-resistant ceramics is successfully prepared by using waste aluminum sludge as the main raw material with the addition of a little clay, talc and barium carbonate. The crystal structure and microstructure of ceramic are characterized by means of XRD, SEM, etc., and the physical and mechanical properties are also tested. The results show that besides the phase of corundum, a little mullite, Mg-Al spinel and hyalophane phases also exist in the product. These phases are produced via reaction in-situ, which can inhibit the overgrowth of Al2O3 grain in grain boundary, and improve the integral property of the material.

关键词： Al2O3 ceramic crystal structure property in-situ synthesis

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