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Engineering cu_(2)O/cu/N-c.interface to induce direc.ional migration of charge for driving photocatalytic homo-coupling of terminal alkynes

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Nano Research 2024年第8期17卷 6895-6902页

作者： Xiaoqin Yan Tianyi Xu Wenwen Zhan yang yang yang Yu Jianjian Yi Xiaoxiao He Lei yang Jianwei Zhao Liming Sun Xiguang Han Jiangsu Key Laboratory of Green Synthetic chemistry for Func.ional Materials Department of ChemistrySchool of Chemistry&Materials ScienceJiangsu Normal UniversityXuzhou 221116China State Key Laboratory of Precision Spectroscopy East China Normal UniversityShanghai 200241China college of Environmental Science and Engineering Yangzhou UniversityYangzhou 225009China Shenzhen HUASUAN Technology co. LtdShenzhen 518055China

The efficient utilization of visible light catalysts for organic reac.ions necessitates not only the effec.ive separation of photogenerated electrons and holes to participate in the reac.ion,but also their ability to form key intermediates with reactant *** present study successfully synthesized a crusiform-like mesoporous structure of nitrogen-doped carbon-coated cu_(2)O/cu(cu_(2)O/cu/N-c)with a cu_(2)O/dual electron acceptor interface using etched HKUST-1 as the precursor.A series of theoretical and experimental studies have demonstrated that the cu_(2)O/cu/N-c.interface in the photocatalytic homo-coupling of terminal alkynes not only effec.ively enhances the separation of photogenerated electron−hole pairs,but also facilitates the formation of the key intermediate[cu_(2)O/cu/N-c]-phenylacetylide and promotes the rearrangement of its internal *** a result,the homo-coupling reac.ion can be effec.ively *** primary reason for the func.ional role of cu_(2)O/cu/N-c.interface lies in the downward bending of energy band from cu_(2)O to N-doped c layers,induced by the different work func.ions of cu_(2)O,cu and N-doped c ***,cu_(2)O/cu/N-c photocatalysts demonstrate exceptional photocatalytic ac.ivity in the homo-coupling reac.ion of terminal alkynes under blue-light irradiation and air *** present study presents a novel research methodology for the development of highly efficient visible light catalysts to facilitate organic reac.ions in future applications.

关键词： photocatalysis homo-coupling of terminal alkynes direc.ional migration of charges heterojunc.ion interface cu_(2)O carbon coated

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Facile access to c-N bonds via unexpected side reac.ions of Knoevenagel condensation and their application in high-efficiency organic solar cells

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Science c.ina chemistry 2024年第1期67卷 323-329页

作者： Daobin yang Shuncheng yang Hongqian Wang Lin Xie Pengyu Yan Ziyi Ge Zhejiang Engineering Research center for Energy Optoelectronic Materials and Devices Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo 315201China School of Materials Science and chemical Engineering Ningbo UniversityNingbo 315211China center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

The construc.ion of c-N bonds is of great importance in the fields of biology,medicine,chemistry and materials ***,the replacement of organic base from pyridine to piperidine in the Knoevenagel condensation process unexpectedly yields a series of novel organic molecules containing c-N ***,the synthesis method does not require any external transition-metals catalysis,and photo-/***,when the new compound 1b is added as a third component to a well-known binary system of PM6:Y6,the efficiency of the organic solar cell is significantly improved,resulting in an outstanding efficiency of 18.0%,which is one of the highest values reported to date for PM6:Y6-based ternary organic solar cells.

关键词： c-N bonds Knoevenagel condensation cross-coupling reac.ion third component organic solar cells

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Zincophilic Ti_(3)c_(2)cl_(2)MXene and anti-corrosive cu NPs for synergistically regulated deposition of dendrite-free Zn metal anode

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Journal of Materials Science & Technology 2024年第2期169卷 137-147页

作者： Yunfei Shen Yi Liu Kaisheng Sun Tiantian Gu Gang Wang Yue yang Jianxiang Pang yang Zheng Xiaodong yang Long chen Key Laboratory for Green Process of chemical Engineering of Xinjiang Bingtuan School of Chemistry and Chemical EngineeringShihezi UniversityShihezi 832003China institute for chemistry Chemnitz University of TechnologyChemnitz 09107Germany cAS Key Laboratory of Func.ional Materials and Devices for Special Environments Xinjiang Key Laboratory of Electronic Information Materials and DevicesCenter of Materials Science and Optoelectronics EngineeringXinjiang Technical Institute of Physics and Chemistry of CASUrumqi 830011China Key Laboratory of Ecophysics and Department of Physics College of ScienceShihezi UniversityShihezi 832003China

Dendrites growth,chemical corrosion,and hydrogen evolution reac.ion(HER)on zinc anodes are the main barriers for the development of aqueous zinc.ion batteries(AZiBs).construc.ing interfacial protec-tive layer is an effec.ive way to alleviate the side reac.ions on the ***,cu/Ti_(3)c_(2)cl_(2)MXene(cMX)with high zincophilic and hydrophobic property is prepared by the lewis molten salts etc.ing method,and the cMX interface protec.ion layer is constructed by a simple spin *** cMX coat-ing layer can provide abundant nucleation sites and uniformize the charge distribution through the zin-cophilic Ti_(3)c_(2)cl_(2)MXene matrix,leading to homogenous Zn *** addition,the hydrophobic coat-ing contained anti-corrosive cu nanoparticles can prevent the Zn anode from the electrolyte,beneficial for suppressing the chemical corrosion and ***,the stable and reversible Zn plating/stripping is ac.ieved for the Zn anode coated by the cMX,which exhibits the lifespan of over 1400 h at 0.5 mA cm^(−2),and even can steadily run for 700 h with 65 mV at 10 mA cm^(−2).Furthermore,cMX@Zn shows a high coulombic efficiency of over 100%for 3800 cycles,which indicates that the cMX@Zn electrode has excellent stability and reversibility of Zn stripping/*** full batteries assembled with ZncoMnO/c(ZcM)cathodes also exhibits higher capacity(450.6 mAh g^(−1)at 0.1 A g^(−1))and cycle stability(capacity retention of 70%after 1500 cycles).This work enhanced the lifespan of AZiBs and broaden the research of multifunc.ional coating layer to other secondary batteries based on metal anodes.

关键词： Zinc anode Spin coating Zincophilic MXene Anti-corrosive cu NPs Multifunc.ional coating

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Enhanced electrocatalytic cO_(2)reduc.ion to formic acid using nanocomposites of in_(2)O_(3)@c with graphene

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Nano Research 2024年第6期17卷 5031-5039页

作者： Wenxiang Li Shuo Gao chuanruo yang Juntao yang Amjad Nisar Guolei Xiang Junsu Jin Beijing Key Laboratory of Membrane Science and Technology Beijing University of Chemical TechnologyBeijing 100029China Nanomaterials Research Group PDPINSTECHIslamabad 44000Pakistan institute of industrial chemistry College of ChemistryBeijing University of Chemical TechnologyBeijing 100029China

in_(2)O_(3)is an effec.ive electrocatalyst to convert cO_(2)to formic acid(HcOOH),but its inherent poor electrical conduc.ivity limits the efficient charge transfer during the ***,the tendency of in_(2)O_(3)particles to agglomerate during synthesis further limits the exposure of ac.ive *** we address these issues by leveraging the template effect of graphene oxide and employing inBDc as a self-sac.ificing template for the pyrolysis synthesis of in_(2)O_(3)@*** resulting in_(2)O_(3)@c/rGO-600 material features in_(2)O_(3)@c nanocubes uniformly anchored on a support of reduced graphene oxide(rGO),significantly enhancing the ac.ive sites *** conduc.ive rGO network facilitates charge transfer during electrocatalysis,and the presence of oxygen vacancies generated during pyrolysis,combined with the strong electron-donating ability of rGO,enhances the adsorption and ac.ivation of cO_(2).in performance evaluation,in_(2)O_(3)@c/rGO-600 exhibits a remarkable HcOOH Faradaic efficiency exceeding 94.0%over a broad potential window of−0.7 to−1.0 V(*** hydrogen electrode(RHE)),with the highest value of 97.9%at−0.9 V(***)in a ***,the material demonstrates an excellent cathodic energy efficiency of 71.6%at−0.7 V(***).The study underscores the efficacy of uniformly anchoring metal oxide nanoparticles onto rGO for enhancing the electrocatalytic cO_(2)reduc.ion performance of materials.

关键词： in_(2)O_(3)@c nanocomposite electrochemical cO_(2)reduc.ion reduced graphene oxide oxygen vacancy

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Fine classification of rice paddy using multitemporal compact polarimetric SAR c band data based on mac.ine learning methods

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Frontiers of Earth Science 2024年第1期18卷 30-43页

作者： Xianyu GUO Junjun YiN Kun Li Jian yang Huimin ZOU Fukun yang School of computer and communication Engineering University of Science and Technology BeijingBeijing 100083China Aerospace information Research institute Chinese Academy of SciencesBeijing 100094China Department of Electronic Engineering Tsinghua UniversityBeijing 100084China college of Global change and Earth System Science Beijing Normal UniversityBeijing 100875China

Rice is an important food crop for human *** distinguishing different varieties and sowing methods of rice on a large scale can provide more accurate information for rice growth monitoring,yield estimation,and phenological monitoring,which has significance for the development of modern *** polarimetric(cP)synthetic aperture radar(SAR)provides multichannel information and shows great potential for rice monitoring and ***,the use of mac.ine learning methods to build classification models is a controversial *** this paper,the advantages of cP SAR data,the powerful learning ability of mac.ine learning,and the important factors of the rice growth cycle were taken into account to ac.ieve high-precision and fine classification of rice ***,cP SAR data were simulated by using the seven temporal RADARSAT-2 c-band data ***,20-two cP SAR parameters were extracted from each of the seven temporal cP SAR data *** addition,we fully considered the change degree of cP SAR parameters on a time scale(ΔcP_(DoY)).Six mac.ine learning methods were employed to carry out the fine classification of rice *** results show that the classification methods of mac.ine learning based on multitemporal cP SAR data can obtain better results in the fine classification of rice paddies by considering the parameters ofΔcP_(DoY).The overall accuracy is greater than 95.05%,and the Kappa coefficient is greater than *** them,the random forest(RF)and support vector mac.ine(SVM)ac.ieve the best results,with an overall accuracy reac.ing 97.32%and 97.37%,respec.ively,and Kappa coefficient values reac.ing 0.965 and 0.966,*** the two types of rice paddies,the average accuracy of the transplant hybrid(T-H)rice paddy is greater than 90.64%,and the highest accuracy is 95.95%.The average accuracy of direct-sown japonica(D-J)rice paddy is greater than 92.57%,and the highest accuracy is 96.13%.

关键词： compact polarimetric(cP)SAR rice paddy mac.ine learning fine classification multitemporal

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irreducible Representations of GL_(n)(c)of Minimal Gelfand-Kirillov Dimension

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Acta Mathematica Sinica,English Series 2024年第3期40卷 639-657页

作者： Zhan Qiang BAi yang yang cHEN Dong Wen LiU Bin Yong SUN School of Mathematical Sciences Soochow UniversitySuzhou 215006P.R.China School of Sciences JiangnanUniversityWui214122P.R.China School of Mathematical Sciences Zhejiang UniversityHangzhou 310058P.R.China institute for Advanced Study in Mathematics Zhejiang UniversityHangzhou 310058P.R.China

in this article,by studying the Bernstein degrees and Goldie rank polynomials,we es-tablish a comparison between the irreducible representations of G=GL_(n)(c)possessing the minimal Gelfand-Kirillov dimension and those induced from finite-dimensional representations of the maximal parabolic subgroup of G of type(n-1,1).We give the transition matrix between the two bases for the corresponding coherent families.

关键词： Bernstein degree coherent continuation Gelfand-Kirillov dimension

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Hypoxia-induced nuclear localization of ubiquinol-cytochrome-c reductase complex assembly factor 3(UQcc3)in hepatocellular carcinoma

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Signal Transduc.ion and Targeted Therapy 2024年第8期9卷 3173-3175页

作者： Yun yang Yinhao Wei Yiying Sun Yong Zhou Hanshuo yang Department of Biotherapy Cancer Center and State Key Laboratory of BiotherapyWest China HospitalSichuan UniversityChengdu 610041China Department of Gastrointestinal Surgery West China HospitalSichuan UniversityChengdu 610041China

Dear Editor,The mitochondrion plays crucial roles in cellular energy generation and signaling *** studies have shown that nuclear-encoded mitochondrial proteins translocate into the nucleus to regulate cell func.ion a... 详细信息

关键词： hepatocellular retrograde communicate

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A twist in the tale:global insights into archaeal box c/D RNA-guided 2′-O-methylation

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Science c.ina(Life Sciences) 2024年第4期67卷 849-850页

作者： Bin Li Jianhua yang MOE Key Laboratory of Gene Func.ion and Regulation State Key Laboratory of BiocontrolSchool of Life SciencesSun Yat-sen UniversityGuangzhou 510275China The Fifth Affiliated Hospital Sun Yat-sen UniversityZhuhai 519000China

The 2′-O-methylation of RNA stands as a dynamic and multifaceted modification,wielding significant influence over the regulation of RNA func.ion,stability,and interac.ions within the cellular context(Sun et al.,2023)... 详细信息

关键词： twist insight

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Nitrogen-doping boosts *cO utilization and H2O ac.ivation on copper for improving cO2 reduc.ion to c2+ products

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Green Energy & Environment 2024年第9期9卷 1459-1465页

作者： Yisen yang Zhonghao Tan Jianling Zhang Jie yang Renjie Zhang Sha Wang Yi Song Zhuizhui Su Beijing National Laboratory for Molecular Sciences CAS Laboratory of Colloid and Interface and Thermodynamics CAS Research/Education Center for Excellence in Molecular Sciences Center for Carbon Neutral Chemistry Institute of Chemistry Chinese Academy of Sciences School of chemical Sciences University of Chinese Academy of Sciences Key Laboratory of Photochemistry CAS Research/Education Center for Excellence in Molecular Sciences Institute of Chemistry Chinese Academy of Sciences

To improve the electrocatalytic transformation of carbon dioxide （cO2） to multi-carbon (c2+) products is of great *** we developed a nitrogen-doped cu catalyst,by which the maximum c2+Faradaic efficiency can reach 72.7%in flow-cell system,with the partial current density reac.ing 0.62 A *** in situ Raman spectra demonstrate that the *cO adsorption can be strengthened on such a N-doped cu catalyst,thus promoting the*cO utilization in the subsequent c–c coupling ***,the water ac.ivation can be well enhanced by N doping on cu *** to the synergistic effects,the selec.ivity and ac.ivity for c2+products over the N-deoped cu catalyst are much improved.

关键词： Electrocatalytic cO 2 reduc.ion reac.ion copper catalyst Doping Multi-carbon products in situ Raman measurement

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copper-catalyzed c(sp)-H aryl amination enables modular synthesis of quinolines and 2-quinolinones

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Science c.ina chemistry 2024年第2期67卷 595-603页

作者： yang Gao Haixia Li Simin yang Yanping Huo Qian chen Xianwei Li Zhe Wang Xiao-Qiang Hu School of chemical Engineering and Light industry Guangdong University of TechnologyGuangzhou510006China Jieyang Branch of chemistry and chemical Engineering Guangdong Laboratory Jieyang515200China Key Laboratory of catalysis and Energy Materials chemistry of Ministry of Education&Hubei Key Laboratory of catalysis and Materials Science School of Chemistry and Materials ScienceSouth-Central University for NationalitiesWuhan430074China

Herein,we disclose a novel copper-catalyzed c(sp)-H aryl amination of terminal alkynes with anthranils,enabling the rapid generation of highly reac.ive secondary N-aryl ynamines for the modular synthesis of structurally diverse c2-substituted quinolines and *** in-situ formed carbonyl-ynamines are prone to tautomerize to carbonyl-ketenimines,which can efficiently react with a series of nucleophiles,including amines,alcohols,phenols,thiols,thiophenols,ac.ive-methylene compounds,and even water to produce various quinoline derivatives with the generation of H_(2)O as a sole and green *** method also unlocks a prac.ical route to create various quinoline-fused heterocycles and can be successfully applied to the late-stage modification of complex molecules and the concise synthesis of bioac.ive *** studies reveal a coppercatalyzed inner-sphere nitrene transfer process by using anthranils as novel aryl nitrene precursors.

关键词： copper catalysis anthranils c(sp)-H aryl amination carbonyl-ketenimines quinolines

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