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Palladium complexes with N,O-Bidentate Ligands Based on N-Oxide Units from cyclic Secondary Amines:Synthesis and catalytic Application in Mizoroki-Heck Reaction

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chinese Journal of chemistry 2024年第3期42卷 294-300页

作者： Xuefeng Jia yanyan Wen changhui He Xianqiang Huang Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education School of Chemistry and Materials ScienceShanxi Normal UniversityTaiyuanShanxi030032 China Shandong Provincial Key Laboratory of chemical energy Storage and Novel cell Technology School of Chemistry & Chemical EngineeringLiaocheng UniversityLiaochengShandong252059 China

Palladium-catalyzed Mizoroki-Heck reaction is a powerful and effic.ent method for construction of csp2–csp2 ***,four palladium complexes(I—IV)with N,O-bidentate ligands(L1—L4)based on N-oxide units from cyclic secondary amines were easily synthesized and successfully applied in Mizoroki-Heck reaction of aryl bromides with electron-defic.ent olefins.X-ray diffraction analyses indicated the palladium(II)atom of II took the distorted square planar geometry and was four-coordinated by nitrogen and oxygen atoms from two ligands(L2).Two free chloride ions were presented as counter anions in complex *** the palladium(II)center of IV was coordinated by nitrogen and oxygen atoms from one ligand(L4)as well as two chlorine atoms,which exhibited the nearly square-planar *** study on catalytic properties of palladium complexes revealed that complex II exhibited high activity superior to the other *** coupling reactions of a series of aryl bromides and olefin derivatives proceeded in the presence of 2—5 mol%palladium complex II,giving the desired products in good to excellent *** advantages of this method such as good compatibility of functional groups,high yields,and short reaction times made it more attractive for constructing csp2–csp2 bonds in the synthesis of functional molecules and materials.

关键词： Palladium complexes N,O-Bidentate ligands N-Oxide units Mizoroki-Heck reaction Aryl bromide Electron-defic.ent olefins c—c coupling Homogeneous catalysis Substituent effects

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Probing dipole operators and four-fermion operators at low-energy lepton colliders

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chinese Physics c 2024年第9期48卷 60-67页

作者： yanyan Hu Xinheng Guo Key Laboratory of Beam Technology of Ministry of Education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China Beijing Radiation center Beijing 100875China

In this study,we explore the potentials of dipole operators and four-fermion operators at low-energy lepton colliders such as Belle Ⅱ and the Super Tau charm Facility(STcF).We utilize high-dimension operators to characterize such anomalous interactions,focusing on those that do not interfere with the Standard Model(SM) *** polarized beams,the four-fermion operators and dipole moment operators can be tested with high precision.

关键词： new physics effective field theory collider

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Bi_(2)WO_(6)/AgInS_(2)S-scheme heterojunction:Effic.ent photodegradation of organic pollutant and toxicity evaluation

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Journal of Materials Sc.ence & Technology 2024年第3期170卷 200-211页

作者： yanyan Zhao Xu Fan Hongxing Zheng enzhou Liu Jun Fan Xuejun Wang college of Biology Pharmacy and Food engineering Shangluo UniversityShangluo 726000China QinLing-Bashan Mountains Bioresources comprehensive Development c.I.c. Shaanxi University of TechnologyHanzhong 723001China School of chemical engineering Northwest UniversityXi’an 710069China

constructing of heterojunction was identified as a feasible way to improve photocatalytic activity of *** this work,a n-p type Bi_(2)WO_(6)/AgInS_(2)S-scheme heterojunction was successfully prepared for organic pollutants *** Bi_(2)WO_(6)/AgInS_(2)S-scheme heterojunction exhibited much higher pho-tocatalytic activity towards Rhodamine B(92.24%,expose to visible light for 60 min),norfloxacin(81.73%,expose to visible light for 90 min)and levofloxacin(87.46%,expose to visible light for 90 min)than pure Bi_(2)WO_(6)and pure AgInS_(2).Toxicity analysis indicated the low environmental toxicity of Rhodamine B degradation intermediates for Rye seeds and Sudangrass seeds germination and *** study displayed that AgInS_(2)and Bi_(2)WO_(6)work as the primary photocatalyst to form·O_(2)−and ·OH,*** improved photocatalytic activity of the Bi_(2)WO_(6)/AgInS_(2)S-scheme heterojunction was due to the im-proved light response range and intensified carrier separation ***,a S-scheme charge transfer mechanism including multiple charge transfer channels was *** work could provide an effective strategy for organic pollutants degradation in wastewater.

关键词： Photocatalysis S-scheme heterojunction AgInS_(2) Bi_(2)WO_(6) Toxicity experiments

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Photoperiod Mediates the Effects of Temperature and Light Intensity on the Proliferation of Ulva prolifera

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Journal of Ocean University of china 2024年第1期23卷 255-263页

作者： JIANG Jianan YU yanyan c.en Yili LI Yahe XU Nianjun Key Laboratory of Marine Biotechnology of Zhejiang Province School of Marine SciencesNingbo UniversityNingbo 315211China

In order to study the complex effects of photoperiod,temperature,and light intensity on the spore maturation and release number of Ulva prolifera,we cultured thalli segment(2–3 mm)under three different photoperiods(L:D=12:12,14:10 and 10:14),temperature(15℃(LT),25℃(MT)and 30℃(HT))and light intensity(100,200 and 400μmol m^(−2)s^(−1),noted as LL,ML and HL,respectively)*** the maturation time,spore release number and chlorophyll fluorescence were *** results suggested that:1)The spore maturation time was accelerated by higher temperature or higher light intensity from 62 h to 36 h,and changes in day length accelerated the spore maturation to a certain extent as compared with 12:12 light/dark cycle;2)Higher light intensity significantly decreased the chlorophyll fluorescence(Fv′/Fm′,NPQ,rETRmax andα)of the mature reproductive segment under 30℃with 12:12 light/dark *** when in the other photoperiods(10:14 and 14:10 conditions),the inhibitory effects of high light intensity were alleviated significantly;3)The optimum condition for the spore maturation and release was 12:12 light/dark cycle,25℃,400μmol m^(−2)s^(−1),with both shorter and longer photoperiod reducing the spore release number;4)Higher light intensity significantly increased the spore release number under 25℃,but these effects were alleviated by 30℃*** study is the first attempt to elucidate the coincidence effects of photoperiod,temperature and light intensity on the reproduction of Ulva,which would help to reveal the mechanism of the rapid proliferation of green tide.

关键词： light intensity maturation photoperiod reproduction temperature Ulva prolifera

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Ectomycorrhizal fungi and dark septate endophyte inoculation improve growth and tolerance of Pinus tabulaeformis under cadmium stress

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Pedosphere 2024年第2期34卷 473-483页

作者： Yong ZHOU yanyan ZHenG Pengwei LI Lingjie XU Qiang FU college of Landscape Architecture and Tourism Hebei Agricultural UniversityBaoding 071000China

Forest trees can establish symbiotic associations with dark septate endophytes(DSEs)and ectomycorrhizal fungi(EcMF)***,the combined effects of these two fungi on the growth and cadmium(cd)tolerance of host plants remain largely *** address this knowledge gap,a pot experiment was conducted to examine the effects of the interaction between an EcMF strain(Suillus granulatus)and a DSE strain(Pseudopyrenochaeta sp.)on Pinus tabulaeformis under cd stress,by assessing plant growth and physiological parameters,nutrient uptake,and soil ***,the colonization rates of both fungal strains were found to increase in response to cd stress,with the extent of this increase being influenced by the specific fungal species and the cd level in the *** to the non-inoculation treatment,single inoculation with fungal strain resulted in enhanced biomass,root development,and nutrient contents in *** seedlings under cd ***,a synergistic effect was observed when these seedlings were co-inoculated with *** and Pseudopyrenochaeta sp.,as indicated by significantly greater measurements in various indicators compared to both the single and non-inoculation *** inoculation effectively regulated the antioxidant defense responses and photosynthesis of *** seedlings subjected to cd stress,particularly in the co-inoculation *** addition,fungal inoculation facilitated the cd accumulation in ***,suggesting a promising potential for the implementation of bioremediation strategies in the areas contaminated with heavy *** findings from this study indicate that the utilization of root symbiotic fungi obtained from stress environments could potentially enhance the growth performance and tolerance of *** towards heavy metals,and co-inoculation of both fungal groups may result in even more pronounced synergistic effects on the overall fitness of the plant.

关键词： antioxidant defense response colonization rate fungal inoculation heavy metal tolerance physiological parameter root symbiotic fungi soil property

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copper-based nanomaterials as peroxidase candidates for intelligent colorimetric detection and antibacterial applications

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Particuology 2024年第1期84卷 126-135页

作者： yanyan Huang Huimin Zhong cong Jiang Jiahui Yang Jingwen Zhang Fei Zhao chaoqun Liu college of Light Industry and Food engineering Nanjing Forestry UniversityNanjing210037China college of Pharmacy Institutes of Environment and MedicineHenan UniversityKaifeng475004China

With natural polyphenol compound tannic acid(TA)as the ingredient,copper tannate(cuTA)nanolayer material was formed by self-assembly under the conditions of heating and copper *** ion and tannic acid could coordinate to form cu-O-c structure which was similar to the Fe-N-c structure of natural heme *** addition,the obtained cuTA nanomaterial possessed excellent peroxidase-like catalytic activity and *** on this excellent enzymatic activity,cuTA nanomaterials could be used for colorimetric detection of hydrogen peroxide with a smartphone and decomposition of organic *** on the structural characteristics and catalytic activity,the copper tannate nanozymes could also serve as potential antibacterial reagents to effectively inhibit the growth of gram-negative and positive bacteria in a low hydrogen peroxide *** work may promote the exploration of novel peroxidase mimetics and broaden the applications of nanozymes.

关键词： Nanozyme colorimetric detection Smartphone Antibacteria

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An intermittent lithium deposition model based on cuMnbimetallic MOF derivatives for composite lithium anode with ultrahigh areal capacity and current densities

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Nano Research 2024年第4期17卷 2763-2769页

作者： Tao Wei yanyan Zhou c.eng Sun Xingtong Guo Shoudong Xu Daifen c.en Yongfu Tang School of energy and Power Jiangsu University of Science and TechnologyZhenjiang 212003China State Key Laboratory of Metastable Materials Sc.ence and Technology(MMST) Hebei Key Laboratory of Applied ChemistryYanshan UniversityQinhuangdao 066004China college of Materials Sc.ence and engineering Taiyuan University of TechnologyTaiyuan 030024China

Recently,three-dimensional(3D)conductive frameworks have been chosen as the host for composite lithium(Li)metal anode because of their exceptional electrical conductivity and remarkable thermal and electrochemical ***,Li tends to accumulate on the top of the 3D frameworks with homogenous lithiophilicity and Li dendrite still *** work firstly designed a bimetallic metal-organic framework(MOF)(cuMn-MOF)derived cu_(2)O and Mn_(3)O_(4) nanoparticles decorated carbon cloth(cc)substrates(cc@cu_(2)O/Mn_(3)O_(4))to fabricate a composite Li *** to the synergistic effects of lithiophilic cu_(2)O and Mn_(3)O_(4),the cc@cu_(2)O/Mn_(3)O_(4)@Li symmetrical cell can afford a prolonged cycling lifespan(1400 h)under an ultrahigh current density and areal capacity(6 mA·cm^(-2)/6 mAh·cm^(-2)).When coupled with the LiFePO_(4)(LFP)cathode,the LFP||cc@cu_(2)O/Mn_(3)O_(4)@Li full cell demonstrated a superior performance of 89.7 mAh·g^(-1) even at an extremely high current density(10 c).Furthermore,it can also be matched well with LiNi_(0.5)co^(0).2Mn_(0.3)O_(2)(NcM523)***,to explain the excellent performances of the cc@cu_(2)O/Mn_(3)O_(4)@Li composite anode,an intermittent model was also *** study offers a novel model that can enhance our comprehension of the Li deposition behavior and pave the way to attain stable and safe Li metal anodes by employing bimetallic MOF-derived materials to construct 3D frameworks.

关键词： lithium metal anode(LMA) three-dimensional(3D)frameworks intermittent lithiophilic model high areal capacity bimetallic metal-organic frameworks(MOFs)

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What factors control plant height?

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Journal of Integrative Agriculture 2024年第6期23卷 1803-1824页

作者： Li Miao Xiangyu Wang chao Yu c.engyang Ye yanyan Yan Huasen Wang college of Horticulture Qingdao Agricultural UniversityQingdao 266109China Key Laboratory for Quality and Safety control of Subtropical Fruits and Vegetables College of Horticulture ScienceZhejiang Agriculture and Forestry UniversityHangzhou 311300China

Plant height(PH)is one of the most important components of the plant ideotype,and it affects plant biomass,yield,lodging resistance,and the ability to use mechanized *** many complex pathways controlling plant growth and development remain poorly understood,we are still unable to obtain the most ideal plants solely through breeding *** can be influenced by genotype,plant hormonal regulation,environmental conditions,and interactions with other ***,we comprehensively review the factors influencing PH,including the regulation of PH-related developmental processes,the genetics and QTLs contributing to PH,and the hormone-regulated molecular mechanisms for ***,the symbiotic influence of grafting on PH is discussed,focusing on the molecular regulation of gene expression and ***,we propose strategies for applying recent findings to breeding for better PH,highlight some knowledge gaps,and suggest potential directions for future studies.

关键词： dwarfism plant hormones interaction grafting QTLs phenotyping

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Suppress oxygen evolution of lithium-rich manganese-based cathode materials via an integrated strategy

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Green energy & environment 2024年第1期9卷 138-151页

作者： Wenhua Yu yanyan Wang Aimin Wu Aikui Li Zhiwen Qiu Xufeng Dong chuang Dong Hao Huang Key Laboratory of energy Materials and Devices(Liaoning Province) School of Materials Science and EngineeringDalian University of TechnologyDalian116024Liaoning ProvinceChina Dalian engineering Research center for New Electric Power Systerms School of Electrical EngineeringDalian University of TechnologyDalian116024Liaoning ProvinceChina

Improving the reversibility of anionic redox and inhibiting irreversible oxygen evolution are the main challenges in the application of high reversible capacity Li-rich Mn-based cathode materials.A facile synchronous lithiation strategy combining the advantages of yttrium doping and LiYO_(2) surface coating is *** doping effectively suppresses the oxygen evolution during the delithiation process by increasing the energy barrier of oxygen evolution reaction through strong Y–O bond ***_(2) nanocoating has the function of structural constraint and protection,that protecting the lattice oxygen exposed to the surface,thus avoiding irreversible *** an Li^(+) conductor,LiYO_(2) nano-coating can provide a fast Li^(+) transfer channel,which enables the sample to have excellent rate *** synergistic effect of Y doping and nano-LiYO_(2) coating integration suppresses the oxygen release from the surface,accelerates the diffusion of Li^(+)from electrolyte to electrode and decreases the interfacial side reactions,enabling the lithium ion batteries to obtain good electrochemical *** lithium-ion full cell employing the Y-1 sample(cathode)and commercial graphite(anode)exhibit an excellent specific.energy density of 442.9 Wh kg^(-1) at a current density of 0.1c,with very stable safety performance,which can be used in a wide temperature range(60 to-15℃)stable *** result illustrates a new integration strategy for advanced cathode materials to achieve high specific.energy density.

关键词： Lithium-rich manganese-based cathodes Lithium ion batteries Oxygen redox Oxygen evolution Integrated strategy

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Analysis of quality-related proteins in golden pompano(Trachinotus ovatus)fillets with modified atmosphere packaging under superchilling storage

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Food Sc.ence and Human Wellness 2024年第4期13卷 2253-2265页

作者： chuang Pan Xiaofan Zhang Shengjun c.en Yong Xue yanyan Wu Yueqi Wang Di Wang South china Sea Fisheries Research Institute Chinese Academy of Fishery SciencesKey Laboratory of Aquatic Product ProcessingMinistry of Agriculture and Rural AffairsNational R&D Centre for Aquatic Product ProcessingGuangzhou 510300China co-Innovation center of Jiangsu Marine Bio-industry Technology Jiangsu Ocean UniversityLianyungang 222005China collaborative Innovation center of Seafood Deep Processing Dalian Polytechnic UniversityDalian 116034China Key Laboratory of Effic.ent Utilization and Processing of Marine Fishery Resources of Hainan Province Sanya Tropical Fisheries Research InstituteSanya 572018China college of Food Sc.ence and engineering Ocean University of ChinaQingdao 266003China

Here,we aimed to study the changes in proteome of golden pompano fillets during post-mortem *** mass tags(TMT)-labeled quantitative proteomic strategy was applied to investigate the relationships between protein changes and quality characteristics of modified atmosphere packaging(MAP)fillets during superchilling(-3°c)*** electron microscopy was used to show that the muscle histology microstructure of fillets was damaged to varying degrees,and low-field nuclear magnetic resonance was used to find that the immobilized water and free water in the muscle of fillets changed *** sulfhydryl content,TcA-soluble peptides and ca2+-ATPase activity also showed that the fillet protein had a deterioration by oxidation and *** Fresh(FS),MAP,and air packaging(AP)groups were *** of 150 proteins were identified as differential abundant proteins(DAPs)in MAP/FS,while 209 DAPs were in AP/FS *** KEGG pathway analysis indicated that most DAPs were involved in binding proteins and protein *** analysis found that 52 DAPs were correlated with quality *** them,8 highly correlated DAPs are expected to be used as potential quality markers for protein oxidation and water-holding *** results provide a further understanding of the muscle deterioration mechanism of packaging golden pompano fillets during superchilling.

关键词： Tandem mass tags(TMT)proteomics Trachinotus ovatus Modified atmosphere packaging Superchilling storage Low-field nuclear magnetic resonance Protein deterioration

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