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Iridium-Catalyzed Site-and Enantioselective C(sp^(2))-H borylation of benzhydryl Ethers:Enantioselectivity Amplification by Kinetic Resolution Relay

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Chinese Journal of Chemistry 2023年第17期41卷 2119-2124页

作者： Ke Jing Lili Chen Panke zhang Senmiao Xu State Key Laboratory for Oxo Synthesis and Selective Oxidation Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhouGansu 730000China Green Catalysis Center and College of ChemistryZhengzhou UniversityZhengzhouHenan 450001China

Comprehensive Summary,We herein report a simple ether-directed iridium-catalyzed site-and enantioselective C(sp^(2))-H borylation of benzhydryl ethers for the first *** chiral benzhydryl ethers were obtained with high enantioselectivities in the presence of a tailor-made chiral bidentate boryl *** found that the kinetic resolution relay significantly amplified the *** synthetic utility of the current method was demonstrated by gram-scale C—H borylation and C—b bond transformations.

关键词： Asymmetric catalysis benzhydryl ethers C-H activation Enantioselectivity Kinetic resolution

High-quality perovskite MAPbI_3 single crystals for broad-spectrum and rapid response integrate photodetector

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Journal of Energy Chemistry 2018年第3期27卷 722-727页

作者： Yunxia zhang Yucheng Liu Zhou Yang Shengzhong(Frank)Liu Key Laboratory of Applied Surface and Colloid Chemistry National Ministry of Education Shaanxi Key Laboratory for Advanced Energy Devices ShaanxiEngineering Lab for Advanced Energy TechnologyInstitute for Advanced Energy MaterialsSchool of Materials Science and EngineeringShaanxi Normal UniversityXi'an 710119ShaanxiChina iChEM Dalian National Laboratory for Clean EnergyDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina

Organic–inorganic single-crystalline perovskites have attracted significant attentions due to their exceptional progress in intrinsic properties＇ investigation and applications in photovoltaics and optoelectronics. In this study, the large perovskite CH3NH3PbI3 single crystal with the largest length of 80 mm was prepared through the method of inverse-temperature crystallization. Meanwhile, the mass production of integrate photodetectors have been fabricated on the single-crystalline wafer and the photoresponse performances were investigated. The results show that the single-crystalline photodetectors have broad spectrum response to 900 nm, rapid response speed（〈40 μs） and excellent stability. These findings are of great importance for future promising perovskite single crystalline for integrated photoelectronic application.

关键词： Single-crystalline Perovskite Photodetector Rapid response

Long non-coding RNAs: From disease code to drug role

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Acta Pharmaceutica Sinica b 2021年第2期11卷 340-354页

作者： Yuanyuan Chen Zhaojun Li Xiaoguang Chen Sen zhang State Key Laboratory of bioactive Substances and Functions of Natural Medicines Institute of Materia MedicaChinese Academy of Medical SciencesPeking Union Medical CollegeBeijing 100050China

Enormous studies have corroborated that long non-codig RNAs(LncRNAs)extensively participate in crucial physiological processes such as metabolism and immunity,and are closely related to the occurrence and development of tumors,cardiovascular diseases,nervous system disorders,nephropathy,and other *** application of lncRNAs as biomarkers or intervention targets can provide new insights into the diagnosis and treatment of *** paper has focused on the emerging research into lncRNAs as pharmacological targets and has reviewed the transition of IncRNAs from the role of disease coding to acting as drug candidates,including the current status and progress in preclinical ***-edge strategies for lncRNA modulation have been summarized,including the sources of LncRNA-related drugs,such as genetic technology and small-molecule compounds,and related delivery *** current progress of clinical trials of lncRNA-targeting drugs is also *** information will form a latest updated reference for research and development of lncRNA-based drugs.

关键词： LncRNAs Targeted drug Gene therapy Small molecules Delivery ASncmtRNA Translational medicine Clinical trials

A Dynamic Emergency Decision-Making Method based on Group Decision Making with Uncertainty Information

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International Journal of Disaster Risk science 2020年第5期11卷 667-679页

作者： Jing Zheng Yingming Wang Kai zhang Juan Liang college of Electronics and Information science Fujian Jiangxia UniversityFuzhou 350108China Institute of Decision science Fuzhou UniversityFuzhou 350116China Key Laboratory of Spatial Data Mining and Information Sharing of Ministry of Education Fuzhou UniversityFuzhou 350116China Department of Information Engineering Fujian Chuanzheng Communications CollegeFuzhou 350007China college of business Administration Fujian Jiangxia UniversityFuzhou 35010&China

In emergency decision making(EDM),it is necessary to generate an effective alternative ***-based reasoning(CbR)has been applied to EDM;however,choosing the most suitable case from a set of similar cases after case retrieval remains *** study proposes a dynamic method based on case retrieval and group decision making(GDM),called dynamic casebased reasoning group decision making(CbRGDM),for emergency alternative *** the proposed method,first,similar historical cases are identified through case similarity ***,evaluation information provided by group decision makers for similar cases is aggregated based on regret theory,and comprehensive perceived utilities for the similar cases are ***,the most suitable historical case is obtained from the case similarities and the comprehensive perceived utilities for similar historical *** method is then applied to an example of a gas explosion in a coal company in *** results show that the proposed method is feasible and effective in *** advantages of the proposed method are verified based on comparisons with existing *** particular,dynamic CbRGDM can adjust the emergency alternative according to changing *** results of application of dynamic CbRGDM to a gas explosion and comparison with existing methods verify its feasibility and practicability.

关键词： Case-based reasoning Dynamic emergency decision making Group decision making Intervalvalued Pythagorean fuzzy linguistic variable(IVPFLV)Regret theory

Morphology-Dependent Catalysis of CeO_(2)-based Nanocrystal Model Catalysts

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Chinese Journal of Chemistry 2022年第15期40卷 1856-1866页

作者： Yang Wen Qiuyu Huang Zhenhua zhang Weixin Huang Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Zhejiang Key Laboratory for Reactive Chemistry on Solid SurfacesInstitute of Physical ChemistryZhejiang Normal UniversityJinhuaZhejiang 321004China Hefei National Laboratory for Physical sciences at the Microscale Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes and Department of Chemical PhysicsUniversity of Science and Technology of ChinaHefeiAnhui 230026China Dalian National Laboratory for Clean Energy Chinese Academy of SciencesDalianLiaoning 116023China

Comprehensive Summary Recent progress in colloidal synthesis has realized the preparations of uniform nanocrystal(NC)model catalysts with rich and well-controlled morphologies that were employed to explore structure-activity relationships of powder catalysts,similar to single-crystal-based model catalysts under ultrahigh vacuum conditions but can work at the same conditions as powder catalysts without the"materials gap"and"pressure gap".In this perspective,the CeO_(2)-based NC model catalysts with various morphologies are included and their relevant progresses are critically *** detailed descriptions of morphology-controlled synthesis and characterizations of uniform CeO_(2)NCs.

关键词： CeO_(2)naocrystals Model catalysts Surface chemistry Heterogeneous catalysis Structure-activity relationships

Insulation and Flame Retardancy Improvement of PbDEs Using 3D-QSAR Model Combined with a Fuzzy Membership Function Method

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Chemical Research in Chinese Universities 2021年第3期37卷 729-738页

作者： zhang Shujing XIAO Jiapeng CHEN Xinyi LI Yu college of Environmental science and Engineering North China Electric Power UniversityBeijing102206P.R.China MOE Key Laboratory of Resources and Environmental Systems Optimization North China Electric Power UniversityBeijing102206P.R.China CECEP Talroad technology Co. Ltd.Beijing100085P.R.China

A three-dimensional quantitative structure-activity relationship(3D-QSAR)model based on the fuzzy membership function method was developed in this study,and then the model was applied to the molecular design of the enhanced comprehensive activities(insulation/flame retardancy)of polybrominated diphenyl ethers(PbDEs)considering their environmental behavior control,to develop environmental-friendly PbDE derivatives with outstanding ***,a fuzzy membership function method was employed to characterize the evaluation values of comprehensive activities of the functional properties of PbDEs based on the 3D-QSAR ***,a comprehensive activity 3D-QSAR model(CoMFA)of the functional properties of PbDEs was established,which demonstrated robustness and good predictive ***,a molecular modification scheme was designed to enhance the comprehensive activity of the functional properties of PbDEs considering the PbDE homologs bDE-138,bDE-183,and bDE-209 as target *** resulting information indicated that the four PbDE derivatives with significantly enhanced functional properties,such as passing screening for toxicity,bioconcentration,migration,and biodegradability assessments with environmentally friendly results,were successfully designed(43.57%-82.14%enhancement).Finally,the mechanism analysis indicated that the enhanced functional properties of the modified PbDE derivatives were significantly related to the substitution positions and substitution groups of PbDEs.

关键词： Polybrominated diphenyl ether Three-dimensional quantitative structure-activity relationship Fuzzy membership function method Insulation/flame retardancy Molecular modification

Clustering and Resource Allocation Strategy for D2D Multicast Networks with Machine Learning Approaches

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China Communications 2021年第1期18卷 196-211页

作者： Fan Jiang Lan zhang Changyin Sun Zeng Yuan Xi’an University of Posts and Telecommunications Xi’an 710121China Shaanxi Key Laboratory of Telecommunications and Information Networks and Security Xi’an 710121China

In this paper,the clustering and resource allocation problem in device-to-device(D2D)multicast transmission underlay cellular networks are *** the sake of classifying D2D users into different D2D multicast clusters,a hybrid intelligent clustering strategy(HICS)based on unsupervised machine learning is proposed *** maximizing the total energy efficiency of D2D multicast clusters,a joint resource allocation scheme is then *** specifically,the energy efficiency optimization problem is constructed under the quality of service(QoS)*** the joint optimization problem is non-convex,we transform the original problem into a mixed-integer programming problem according to the Dinkelbach ***,to avoid the high computational complexity inherent in the traditional resource allocation problem,a Q-Learning based joint resource allocation and power control algorithm is *** results reveal that the proposed algorithm achieves better energy efficiency in terms of throughput per energy consumption.

关键词： device-to-device multicast communication clustering energy efficiency resource allocation Q-Learning

Dual response of graphene-based ultra-small molecular junctions to defect engineering

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Nano Research 2016年第5期9卷 1480-1488页

作者： Kunpeng Dou Xiaoxiao Fu Abir De Sarkar Ruiqin zhang Department of physics and Materials science City University of Hong Kong Hong Kong China Institute of Nano science and technology (An Autonomous Institute of Department of science and technology Government of India)Habitat Centre (Transit Campus) Phase X Sector-64 Mohali Punjab- 160 062 India

It has been reported that N and b doping induce a quasi-bound state that suppresses the conduction in graphene nanoribbon （GNR）-based junctions, while an H defect or a pyridine-like N-atom （PN） substitution at the edge of the GNR does not affect the transmission close to the Fermi energy. However, these results may vary when the size of the functional unit of the GNR junction decreases to a molecular level. In this study, a defect is introduced to a test-bed architecture consisting of a polyacene bridging two zigzag GNR electrodes, which changes the molecular state alignment and coupling to the electrode states, and varies the equivalence between two eigen-channels at the Fermi level. It is revealed that b and N atom substitution, and H defects play a dual role in the molecular conductance, whereas the PN substitution acts as an ineffective dopant. The results obtained from density functional theory combined with the non-equilibrium Green＇s function method aid in determining the optimal design for the GNR-based ultra-small molecular devices via defect engineering.

关键词： graphene defect electron transport molecular electronics single-molecule studies

Light-induced tumor theranostics based on chemical-exfoliated borophene

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Light(science & Applications) 2022年第12期11卷 2886-2899页

作者： Zhongjian Xie Yanhong Duo Taojian Fan Yao Zhu Shuai Feng Chuanbo Li Honglian guo Yanqi Ge Shakeel Ahmed Weichun Huang Huiling Liu Ling Qi Rui guo Defa Li Paras N.Prasad Han zhang Institute of Pediatrics Shenzhen Children’s HospitalShenzhenGuangdongChina Shenzhen Engineering Laboratory of phosphorene and Optoelectronics International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of EducationShenzhen Institute of Translational MedicineDepartment of OtolaryngologyShenzhen Second People’s Hospitalthe First Affiliated HospitalInstitute of Microscale OptoelectronicsShenzhen University518060 ShenzhenChina Department of Microbiology Tumor and Cell Biology(MTC)Karolinska InstituteStockholmSweden Shenzhen Medical Ultrasound Engineering Center Department of UltrasonographyShenzhen People’s HospitalSecond Clinical Medical College of Jinan UniversityFirst Clinical Medical College of Southern University of Science and Technology518020 ShenzhenChina Optoelectronics Research Center School of ScienceMinzu University of China100081 BeijingPR China Nantong Key Lab of Intelligent and New Energy Materials College of Chemistry and Chemical EngineeringNantong University226019 NantongJiangsuChina Key Laboratory of biomaterials of Guangdong Higher Education Institutes Guangdong Provincial Engineering and Technological Research Centre for Drug Carrier DevelopmentDepartment of Biomedical EngineeringJinan University510632 GuangzhouChina Department of Core Medical Laboratory the Sixth Affiliated Hospital of Guangzhou Medical UniversityQingyuan People’s HospitalQingyuanGuang Dong ProvinceChina Department of Laboratory Medicine Shenzhen Children’s HospitalShenzhenGuangdongChina Institute for Lasers Photonicsand Biophotonics and Department of ChemistryUniversity at BuffaloState University of New YorkBuffaloNYUSA

Among 2D materials(Xenes)which are at the forefront of research activities,borophene,is an exciting new entry due to its uniquely varied optical,electronic,and chemical properties in many polymorphic forms with widely varying band gaps including the lightest 2D metallic *** this paper,we used a simple selective chemical etching to prepare borophene with a strong near IR light-induced photothermal *** photothermal efficiency is similar to plasmonic Au nanoparticles,with the added benefit of borophene being degradable due to electron deficiency of *** introduce this selective chemical etching process to obtain ultrathin and large borophene nanosheets(thickness of ~4 nm and lateral size up to ~600 nm)from the precursor of Alb_(2).We also report first-time observation of a selective Acid etching behavior showing HCl etching of Al to form a residual b lattice,while HF selectively etches b to yield an Al *** demonstrate that through surface modification with polydopamine(PDA),a biocompatible smart delivery nanoplatform of b@PDA can respond to a tumor environment,exhibiting an enhanced cellular uptake *** demonstrate that borophene can be more suitable for safe photothermal theranostic of thick tumor using deep penetrating near IR light compared to gold nanoparticles which are not degradable,thus posing longterm toxicity *** about 40 kinds of borides,we hope that our work will open door to more discoveries of this top-down selective etching approach for generating borophene structures with rich unexplored thermal,electronic,and optical properties for many other technological applications.

关键词： chemical uniquely electronic