A5101547443- Fluorine in Organic Chemistry
- Catalytic C–H Functionalization Methods
- Synthesis and Biological Evaluation
- Synthesis and Reactions of Organic Compounds
- Cyclopropane Reaction Mechanisms
- Advanced Battery Materials and Technologies
- Advancements in Battery Materials
- Advanced battery technologies research
- Synthesis and Catalytic Reactions
- Supercapacitor Materials and Fabrication
- Chemical Synthesis and Analysis
- Synthesis and Reactivity of Heterocycles
- Network Security and Intrusion Detection
- Advanced Battery Technologies Research
- Smart Grid Security and Resilience
- Wireless Communication Networks Research
- Stability and Control of Uncertain Systems
- Quinazolinone synthesis and applications
- Catalytic Alkyne Reactions
- Sulfur-Based Synthesis Techniques
- Click Chemistry and Applications
- Satellite Communication Systems
- Spam and Phishing Detection
- IoT Networks and Protocols
- Neural Networks Stability and Synchronization
Beijing Institute of Technology
2022-2024
Chongqing Technology and Business University
2023-2024
Central South University
2018-2023
Sun Yat-sen University
2022
University Town of Shenzhen
2022
Tsinghua University
2022
Lanzhou University
2017
First Hospital of Lanzhou University
2017
Guangzhou University
2014
Shanghai Institute of Organic Chemistry
2009-2012
Two-phase or multiphase compounds have been evidenced to exhibit good electrochemical performance for energy applications; however, the mechanism insights into these materials, especially improvement by engineering high-active phase boundaries in bimetallic compounds, remain be seen. Here, we report a selenide heterostructure (CoSe2/ZnSe) and fundamental behind their superior performance. The charge redistribution at of CoSe2/ZnSe was experimentally theoretically proven. Benefiting from...
Abstract A V 4+ -V 2 O 5 cathode with mixed vanadium valences was prepared via a novel synthetic method using VOOH as the precursor, and its zinc-ion storage performance evaluated. The products are hollow spheres consisting of nanoflakes. exhibits prominent cycling performance, specific capacity 140 mAh g −1 after 1000 cycles at 10 , an excellent rate capability. good electrochemical is attributed to presence which leads higher activity, lower polarization, faster ion diffusion, electrical...
Safe, inexpensive aqueous zinc-ion batteries (AZIBs) are regarded as promising energy storage devices. However, they still face issues, including dissolution and collapse of the cathode well H2 evolution growth Zn dendrites on anode. Herein, we simultaneously regulate cations anions in electrolyte for high-capacity, high-stability zinc–vanadium (Zn–V) based a bimetallic cation-doped Na0.33K0.1V2O5⋅nH2O cathode. We demonstrate that Na+ cations suppress restrain dendrite anode via an...
Abstract Rechargeable aqueous zinc‐ion batteries hold great promise for potential applications in large‐scale energy storage, but the reversible insertion of bivalent Zn 2+ and fast reaction kinetics remain elusive goals. Hence, a highly Zn/VN x O y battery is developed, which combines insertion/extraction pseudo‐capacitance‐liked surface redox mechanism. The storage induced by simultaneous cationic (V 3+ ↔ V ) anionic (N 3− N 2− reaction, are mainly responsible high reversibility no...
Comprehensive analyses on thermal runaway mechanisms are critically vital to achieve the safe lithium–sulfur (Li–S) batteries. The reactions between dissolved higher-order polysulfides and Li metal were found be origins for of 1.0 Ah cycled Li–S pouch cells. 16-cycle cell indicates high safety, heating from 30 300 °C without runaway, while with additional electrolyte undergoes severe at 147.9 °C, demonstrating key roles safety On contrary, does not occur 45-cycle despite addition...
The cathode kinetics promotion effectiveness of electrocatalysts is evaluated in lean-electrolyte lithium–sulfur batteries. improvement polysulfide conversion and battery performance more significant at higher sulfur concentration.
Preparation of 2-fluoroalkylbenzimidazoles from N-aryl trifluoroacetimidoyl (or bromodifluoroacetimidoyl) chlorides and primary amines has been achieved via copper(I)-catalyzed tandem reactions.
We described hereby an instance of diastereoselective silver-catalyzed 1,3-dipolar cycloaddition azomethine ylides with imine compounds. This new method provided synthetically useful, highly substituted tetrahydroimidazole derivatives efficiency and high diastereoselectivity. can conveniently obtain fluorinated dihydroimidazole, imidazole, diamino esters through simple modification.
An efficient one-pot method for the synthesis of 2-trifluoromethylbenzothiazoles by treatment trifluoromethylimidoyl chlorides with sodium hydrosulfide hydrate using PdCl(2) as sole catalyst in DMSO is described. The reaction proceeds via thiolation/C-H bond functionalization/C-S formation moderate to high yields good functional group tolerance.
In this paper, we investigate the problem of a dynamic event-triggered robust controller design for flexible robotic arm systems with continuous-time phase-type semi-Markov jump process. particular, change in moment inertia is first considered system, which necessary ensuring security and stability control special robots employed under circumstances, such as surgical assisted-living have strict lightweight requirements. To handle problem, chain conducted to model Furthermore, scheme used...
Abstract 2‐Fluoromethylated quinolines were synthesized through the reaction of N ‐aryl‐fluorinated imidoyl iodides with terminal alkynes in good yields by catalysis copper(I) iodide (CuI) alone.
A new, rapid and high-yielding method to prepare 3,4-disubstituted 2-trifluoromethylquinolines by a palladium catalyzed tandem Sonogashira–alkyne carbocyclization of β-trifluoromethyl β-enaminoketones with arynes is described. Moderate excellent yields have been achieved under mild conditions. This reaction can also be expanded the non-fluorine containing substrates. The mechanism discussed.
A new strategy for the synthesis of poly-substituted 3-H, 3-F, and 3-trifluoromethyl pyridines based on C-F bond breaking anionically activated fluoroalkyl group is described. series 2,6-disubstituted 4-amino were prepared through this domino process in high yields under noble metal-free conditions, making method a supplement to pyridine synthesis.
Abstract Novel tricyclic 4‐(trifluoromethyl)‐[1,2,3]triazolo[1,5‐ a ]quinoxalines were readily prepared from N ‐( o ‐haloaryl)alkynylimines and sodium azide via copper(I)‐catalyzed tandem reactions. This synthetic strategy provides an efficient way to access library of novel heterocyclic compounds that are interest in drug discovery.
Abstract A novel palladium‐catalyzed synthesis of substituted 3‐methylene‐3 H ‐indoles from readily accessible alkynylimines has been developed. wide variety 2‐fluoroalkyl‐3‐methylene‐3 were synthesized in moderate to good yields through this cascade carbopalladation/CH activation process. This reaction can also be expanded non‐fluorinated substrates.
The intramolecular hydroamination of N-(ortho-alkynyl)aryl-N'-substituted trifluoroacetamidines and bromodifluoroacetamidines is studied in detail. When the substituents on alkyne fragment are aryl alkyl groups, 5-endo-dig cyclization occurs utilizing NaAuCl(4)·2H(2)O as a catalyst, while 6-exo-dig proceeds presence K(2)CO(3) base. Interestingly, indole derivatives afforded with good regioselectivity via pathway catalyzed by Cu(OAc)(2) when ortho-ethynyl appears substituent amidine....
Fluorinated azaheterocycles are frequently found in pharmaceuticals, drug candidates, ligands for transition metal catalysts, and other molecular functional materials, so efficient methods the synthesis of these compounds significant value. We herein describe a selective strategy poly-substituted pyridines fluoroalkyl dihydropyrimidines based on C–F bond breaking anionically activated group. An array were prepared through this domino process high yields under noble catalyst-free conditions,...