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Science China Chemistry 2023年第11期66卷 3169-3177页

作者： Ning Xia Jiahao Zhao Guanfei Gong Hongqiang Dong Haohu Li Jike Wang Lu Wang Shigui Chen The institute for advanced studies Wuhan UniversityWuhan 430072China school of Materials Science and engineering Hubei University of Automotive TechnologyShiyan 442002China

The development of preparation methods for XOFs,as a new class of organic frameworks,plays a crucial role in shaping their structures,functions,and potential *** this study,we presented the construction of chiral supramolecular 2D halogen-bonded organic frameworks(XOFs)through a post-synthetic modification strategy.A linear halogen-bonded organic polymer(XOP),XOP-DPBA,decorated with aldehyde groups,was initially prepared to validate the feasibility of post-synthetic modification for XOF construction and ***-DPBA exhibited excellent reactivity with amines,forming imine *** utilizing this reactivity,a series of cross-linked 2D XOFs were efficiently prepared through post-synthetic modified cross-linking ***,we successfully introduced chiralα/β-cyclodextrins(α/β-CD)into the XOF skeletons via host-guest interactions,resulting in the fabrication of chiral supramolecular 2D *** chiral XOFs displayed the induced circular dichroism(ICD)signals and assembled them into helical *** post-synthetic modification strategy demonstrated its versatility and simplicity for the construction and functionalization of XOFs.

关键词： supramolecular halogen-bonded organic frameworks [N···I~+···N]halogen bond post-synthetic modification supramolecular self-assembly chirality induction

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Application of neutron imaging in observing various states of matter inside lithium batteries

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National Science Review 2023年第11期10卷 192-208页

作者： Lei Gao Songbai Han Haijin Ni Jinlong Zhu Liping Wang Song Gao Yonggang Wang Dubin Huang Yusheng Zhao Ruqiang Zou school of Materials Science and engineering Peking University Academy for advanced Interdisciplinary studies Southern University of Science and Technology Department of Physics Southern University of Science and Technology Eastern institute for advanced Study

Lithium batteries have been essential technologies and become an integral part of our daily lives, powering a range of devices from phones to electric vehicles. To fully understand and optimize the performance of lithium batteries, it is necessary to investigate their internal states and processes through various characterization methods. Neutron imaging has been an indispensable complementary characterization technique to X-ray imaging or electron microscopy because of the unique interaction principle between neutrons and matter. It provides particular insights into the various states of matter inside lithium batteries,including the Li+concentration in solid electrodes, the Li plating/stripping behavior of Li-metal anodes,the Li+diffusion in solid ionic conductors, the distribution of liquid electrolytes and the generation of *** review aims to highlight the capabilities and advantages of neutron imaging in characterizing lithium batteries, as well as its current state of application in this field. Additionally, we discuss the potential of neutron imaging to contribute to the ongoing development of advanced batteries through its ability to visualize internal evolution.

关键词： lithium battery neutron imaging electrodes electrolytes

[5]Rotaxane, linear polymer and supramolecular organic framework constructed by nor-seco-cucurbit[10]uril-based ternary complexation

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Chinese Chemical Letters 2023年第3期34卷 298-301页

作者： Pan-Qing Zhang Qian Li Ze-Kun Wang Qing-Xuan Tang Pei-Pei Liu Wen-Hao Li Guan-Yu Yang Bo Yang Da Ma Zhan-Ting Li College of Chemistry Zhengzhou UniversityZhengzhou 450001China Department of Chemistry Fudan UniversityShanghai 200438China school of pharmaceutical and Materials engineering &Institute for Advanced StudiesTaizhou UniversityJiaojiang 318000China

Here we use nor-seco-cucurbit[10]uril(ns-CB[10]) based ternary complexation to construct [5]rotaxane,linear supramolecular dynamic rotaxane polymers and cubic 3D supramolecular organic framework.A [5]rotaxane is constructed by ns-CB[10], TMe CB[6] and short linear derivatives of 4,4'-bipyridinium(M2). ns-CB[10], CB[7] and long linear derivatives of 4,4'-bipyridinium(M3) self-assemble into a linear supramolecular dynamic rotaxane polymer. ns-CB[10] and tetracationic tetrahedral monomer selfassemble and form a three-dimensional supramolecular organic framework. The above results demonstrate that ns-CB[10]-based ternary complexation is a versatile platform to build various supramolecular systems.

关键词： Rotaxane Linear polymer Supramolecular organic framework nor-seco-Cucurbituril Ternary complexation

Applications of artificial intelligence in power system operation, control and planning: a review

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Clean Energy 2023年第6期7卷 1199-1218页

作者： Utkarsh Pandey Anshumaan Pathak Adesh Kumar Surajit Mondal Department of Electrical and Electronics engineering School of Advanced EngineeringUniversity of Petroleum and Energy StudiesDehradun248007India

As different artificial intelligence(AI)techniques continue to evolve,power systems are undergoing significant technological changes with the primary goal of reducing computational time,decreasing utility and consumer costs and ensuring the reliable operation of an electrical power *** techniques compute large amounts of data at a faster speed than numerical optimization methods with higher processing *** these features,AI techniques can further automate and increase the performance of power *** paper presents a comprehensive overview of diverse AI techniques that can be applied in power system operation,control and planning,aiming to facilitate their various *** explained how AI can be used to resolve system frequency changes,maintain the voltage profile to minimize transmission losses,reduce the fault rate and minimize reactive current in distributed sys-tems to increase the power factor and improve the voltage profile.

关键词： artificial neural network genetic algorithm fuzzy logic adaptive neuro-fuzzy interference system artificial bee colony optimization ant colony optimization particle swarm optimization

General radical difluoromethylation using difluoroacetic anhydride via photoredox catalysis

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Science China Chemistry 2024年第8期67卷 2637-2646页

作者： Meng He Yankai Yang Heng Zhang Zhipeng Guan Zhi-Bing Dong Hong Yi Aiwen Lei school of Chemistry and Environmental engineering Wuhan Institute of TechnologyWuhan 430205China College of Chemistry and Molecular Sciences and institute for advanced studies(IAS) Wuhan UniversityWuhan 430072China

CF_(2)H-containing molecules play pivotal roles in diverse fields from medicinal chemistry to materials science. However, the application of existing CF_(2)H reagents as a source of CF_(2)H radical is limited by their reactivity and preparation. Herein, we develop a simple and general visible-light-catalyzed radical difluoromethylation reaction of alkenes, dienes, and heteroaromatics using commercially available, easy-to-handle, and low-cost difluoroacetic anhydride as the CF_(2)H reagent. This scalable protocol enables the convenient synthesis of a range of CF_(2)H-containing compounds under mild conditions, exhibiting a broad substrate scope and functional group tolerance. Potential applications are further demonstrated by gram-scale synthesis, sunlight experiments, derivatization experiments as well as the synthesis of bioactive molecules.

关键词： radical difluoromethylation alkenes/dienes/heteroaromatics difluoroacetic anhydride photoredox

Nitrosoarenes as Nitrogen Source for Generation of Sulfonamides with the Insertion of Sulfur Dioxide under Metal-Free Conditions

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Chinese Journal of Chemistry 2020年第10期38卷 1098-1102页

作者： Xuefeng Wang Yanmei Lin Jin-Biao Liu Fu-Sheng He Yunyan Kuang Jie Wu Department of Chemistry Fudan University2005 Songhu RoadShanghai 200438China Schoo/of pharmaceutical and Materials engineering&institute for advanced studies Taizhou University1139 Shifu AvenueTaizhouZhejiang 318000China school of Metollurgical and Chemical engineering Jiangxi University of Science and TechnologyGanzhouJiangxi 341000China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of Sciences345 Lingling RoadShanghai 200032China

Summary of main observation and conclusion A metal-free reaction of nitrosoarenes,aryldiazonium tetrafluoroborates,and sulfur dioxide under mild conditions is developed,giving rise to sulfonamides in moderate to good *** transformation proceeds eficiently at room temperature in the presence of cyclohexa-1,4-diene with a broad reaction *** functional group compatibility is observed,including cyano,halo,and ester.A plausi-ble mechanism involving a radical process with the insertion of sulfur dioxide is proposed,and cyclohexa-1,4-diene serves as the reductant during the transformation.

关键词： dioxide sulfur Sulfur

Photocatalytic vinyl radical-mediated multicomponent 1,4-/1,8-carboimination across alkynes and olefins/(hetero)arenes

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Science China Chemistry 2024年第2期67卷 558-567页

作者： Shan-Shan Li Yu-Shi Jiang Xue-Ling Luo Xuming Ran Yuqiang Li Dong Wu Cheng-Xue Pan Peng-Ju Xia school of Chemistry and pharmaceutical Sciences Guangxi Normal UniversityGuilin541004China Shanghai Artificial Intelligence Laboratory Shanghai200433China The institute for advanced studies Wuhan UniversityWuhan430064China

We developed a highly selective and efficient multicomponent transformation by utilizing alkynes and olefins/(hetero)arenes through photoinduced energy-transfer *** reaction involves the formation of three distinct chemical bonds,namely C(sp~3)–C(sp~2),C(sp~2)–C(sp~3),and C(sp~3)–N,in a single coordinated *** strategy used a vinyl radical-mediated radical relay approach under mild conditions,exhibiting a broad substrate scope(>70 examples),excellent functional-group tolerance,and remarkable regio-and *** the utilization of a combination of experimental techniques and density functional theory(DFT),we delved deeper into the mechanistic intricacies of this distinctive *** revealed that the selective radical addition to electron-deficient alkynes,rather than olefins,was governed by the inherent reactivity of alkyl *** discovery presented a highly effective approach for the synthesis of stereodefined multisubstituted alkenes.

关键词： alkyne-olefin coupling DFT studies regio-and anti-stereoselectivity multisubstituted alkenes

The effects of exercise interventions on brain-derived neurotrophic factor levels in children and adolescents:a meta-analysis

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Neural Regeneration Research 2025年第5期20卷 1513-1520页

作者： Xueyun Shao Longfei He Yangyang Liu Physical Education school Shenzhen UniversityShenzhenGuangdong ProvinceChina Shenzhen institute of Neuroscience ShenzhenGuangdong ProvinceChina

Brain-derived neurotrophic factor is a crucial neurotrophic factor that plays a significant role in brain health. Although the vast majority of meta-analyses have confirmed that exercise interventions can increase brain-derived neurotrophic factor levels in children and adolescents, the effects of specific types of exercise on brain-derived neurotrophic factor levels are still controversial. To address this issue, we used meta-analytic methods to quantitatively evaluate, analyze, and integrate relevant studies. Our goals were to formulate general conclusions regarding the use of exercise interventions, explore the physiological mechanisms by which exercise improves brain health and cognitive ability in children and adolescents, and provide a reliable foundation for follow-up research. We used the Pub Med, Web of Science, Science Direct, Springer, Wiley Online Library, Weipu, Wanfang, and China National Knowledge Infrastructure databases to search for randomized controlled trials examining the influences of exercise interventions on brain-derived neurotrophic factor levels in children and adolescents. The extracted data were analyzed using Review Manager 5.3. According to the inclusion criteria, we assessed randomized controlled trials in which the samples were mainly children and adolescents, and the outcome indicators were measured before and after the intervention. We excluded animal experiments, studies that lacked a control group, and those that did not report quantitative results. The mean difference(MD;before versus after intervention) was used to evaluate the effect of exercise on brain-derived neurotrophic factor levels in children and adolescents. Overall, 531 participants(60 children and 471 adolescents, 10.9–16.1 years) were included from 13 randomized controlled trials. Heterogeneity was evaluated using the Q statistic and I^(2) test provided by Review Manager software. The meta-analysis showed that there was no heterogeneity among the studies(P = 0.67,

关键词： adolescents brain-derived neurotrophic factor children exercise meta-analysis randomized controlled trials

Inhibition of Platelet Aggregation and In Vitro Free Radical Scavenging Activity of Dried Fruiting Bodies of Pleurotus eous

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Chinese Journal of Integrative Medicine 2015年第7期21卷 530-536页

作者： Suseem S.R Mary Saral pharmaceutical Chemistry Division School of Advanced SciencesVIT University

Objective： To evaluate the ethyl acetate, methanol and aqueous extracts of dried fruiting bodies of Pleurotus eous for its anti-platelet activity on human volunteer＇s blood. And also to analyze the free radical scavenging property of the extracts of *** by using various in vitro models. Methods： Anti-platelet activity of dried fruiting bodies of *** was evaluated by in vitro model using blood platelets. Inhibition of platelet aggregation was monitored after pre-incubation of platelets with the crude extracts of mushroom ***. Antioxidant activities of extracts of *** were evaluated by different in vitro experiments, namely, 1, 1-diphenyl- 2-picryl hydrazyl （DPPH）, superoxide, hydroxyl radical and lipid peroxide radical models. Results： Crude extracts of mushroom *** inhibited platelet aggregation dose-dependently which was induced by adenosine diphosphate （ADP）. At a maximum concentration of 10 mg/mL, methanol extract effected 64.02% inhibition of lipid per-oxidation and 50.12% scavenging effect on superoxide anion radical. Aqueous extract of *** have shown 69.43% chelating ability on ferrous ions, 24.27% scavenging effect on hydroxyl radical and 49.57% scavenging effect on DPPH radical at 10 mg/mL. Increasing concentrations of the extract were found to cause progressively decreasing of the intensity of absorbance. Conclusions： Anti-platelet effects could be related in part to the polyphenolic compounds present in the extracts. Antioxidant activity results indicated the free radical scavenging property of the extracts of *** which might be due to the high content of phenolic compounds and flavonoids.

关键词： anti-platelet Pleurotus eous mushroom antioxidant scavenging effect chelating effect,reductive

Normalization of VIIRS DNB images for improved estimation of socioeconomic indicators

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International Journal of Digital Earth 2021年第5期14卷 540-554页

作者： Man Duc Chuc Tsubasa Hirakawa Hiromichi Fukuic Graduate school of engineering Chubu UniversityKasugaiJapan Chubu institute for advanced studies Chubu UniversityKasugaiJapan Chubu institute for advanced studies and International Digital Earth Applied Science Research Center(IDEAS) Chubu UniversityKasugaiJapan

Monthly Visible Infrared Imaging Radiometer Suite(VIIRS)Day-Night Band(DNB)composite data are widely used in research,such as estimations of socioeconomic ***,some surface conditions affect the VIIRS DNB radiance,which may create some estimation bias in certain *** this paper,we propose a novel normalization algorithm for VIIRS DNB monthly composite *** aim is to normalize VIIRS radiance,collected under different surface conditions,to a reference point,so that the bias is *** algorithm is based on the utilization of stable lit pixels as a reference and a nonlinear regression algorithm,to match un-normalized data to the reference *** results show that the algorithm could improve correlation(R2)between the total sum of nightlights(TOL),electric power consumption(EPC),and gross domestic product(GDP)at both a global and local *** algorithm could significantly diminish the seasonal component of un-normalized nightlights radiance caused by *** intensified nightlights radiance in sandy regions could also be reduced to a more reasonable range in comparison with other *** inspection shows that the brightness of snow-affected and sandy regions was strongly reduced after undergoing normalization.

关键词： VIIRS DNB seasonal factors stable lit normalization socioeconomic indicators