A5110373455- Organometallic Complex Synthesis and Catalysis
- Catalytic C–H Functionalization Methods
- Surfactants and Colloidal Systems
- Cyclopropane Reaction Mechanisms
- Advanced Polymer Synthesis and Characterization
- Click Chemistry and Applications
- Photorefractive and Nonlinear Optics
- Chemical Synthesis and Analysis
- biodegradable polymer synthesis and properties
- Catalytic Alkyne Reactions
- Bone Tissue Engineering Materials
- Carbon dioxide utilization in catalysis
- Solid State Laser Technologies
- Analytical Chemistry and Chromatography
- Polymer composites and self-healing
- Molecular Sensors and Ion Detection
- Asymmetric Hydrogenation and Catalysis
- Electrospun Nanofibers in Biomedical Applications
- Aluminum Alloys Composites Properties
- Laser Design and Applications
- Synthesis and Catalytic Reactions
- Carbohydrate Chemistry and Synthesis
- Organoboron and organosilicon chemistry
- Synthetic Organic Chemistry Methods
- Biotin and Related Studies
Harbin University of Science and Technology
2025
University of Science and Technology of China
2024
Qingdao Institute of Bioenergy and Bioprocess Technology
2022-2024
University of Chinese Academy of Sciences
2019-2024
Dalian University of Technology
2024
Chinese Academy of Sciences
2005-2022
Qinghai New Energy (China)
2022
Suzhou Research Institute
2019-2021
Lanzhou Institute of Chemical Physics
2019-2021
Zhejiang Gongshang University
2020
Replacing conventional dialkylamino substituents with a three-membered aziridine ring in naphthalimide leads to significantly enhanced brightness and photostability by effectively suppressing twisted intramolecular charge transfer formation. This replacement is generalizable other chemical families of fluorophores, such as coumarin, phthalimide, nitrobenzoxadiazole dyes. In highly polar we show that aziridinyl dyes even outperform their azetidinyl analogues aqueous solution. We also proposed...
A Co-catalyzed highly regio- and enantioselective reductive coupling of alkynes aldehydes has been developed under visible light photoredox dual catalysis. variety enantioenriched allylic alcohols have obtained by using unsymmetrical internal commercially available catalyst, chiral ligand, reagents. It is noteworthy that this approach considerable advantages, such as excellent (>95:5 for >40 examples), stereo- (up to >95:5 E/Z), enantioselectivity (92-99% ee, >35 examples) control, mild...
We report here a Ni-catalyzed reductive coupling of aldehydes with widely available 1,3-dienes under visible-light photoredox dual catalysis. The homoallyic alcohols are obtained in broad scope complete branched regioselectivity. Hantzsch ester is used as the hydrogen radical source to oxidize low-valent nickel salt affording Ni–H species. Preliminary mechanistic studies indicate successive single-electron transfer (SET) pathway and generation key π-allylnickel intermediate via insertion...
We present for the first time a dual-wavelength laser operation at 1064 and 914 nm in two NdYVO4 crystals. A 879 diode is used to pump Nd:YVO4 crystal emitting nm, second intracavity pumped nm. total output power of 4.28 W fundamental wavelengths was achieved absorbed 13.8 W. The M2 values lights maximum were found be around 1.3 1.1, respectively.
Abstract Differently substituted 2‐alkoxyfurans (2,3,4‐ or 2,3,5‐trisubstituted furans) were highly regioselectively synthesized by means of the ring‐opening cycloisomerization same cyclopropenyl carboxylates with good yields in different solvents and excellent regioselectivity using [Cu(acac) 2 ] (acac=acetylacetonate) [RuCl (PPh 3 ) as catalyst, respectively. The structures these two types furans established X‐ray diffraction studies. A rationale has been proposed.
We present for the first time a Nd:YVO4 laser emitting at 1064 nm intracavity pumped by 916 diode-pumped Nd:LuVO4 laser. A 809 diode is used to pump crystal nm, was and lased nm. Intracavity sum-frequency mixing then realized in LiB3O6 (LBO) reach blue range. obtained continuous-wave output power of 216 mW 492 under 19.6 W incident
Hepatic encephalopathy is a common consequence of liver cirrhosis, but diagnosis can be difficult as it based on clinical criteria alone. We hypothesised that serum prealbumin, cholinesterase and retinol binding protein (RBP) help support the hepatic encephalopathy.We enrolled 306 cirrhotic patients (110 with encephalopathy), 100 chronic hepatitis B 50 healthy controls, measuring routine function tests (ALT, AST, GGT, ALP, bilirubin), albumin, prothrombin time, RBP by methods. Logistic...
Abstract Herein, we describe an environmentally benign enzymatic approach for the preparation of indigoid from indole derivatives. A series beneficial P450BM3 mutants were obtained using a stepwise involving site‐directed, random, and combinatory hot‐site mutations. Using H 2 O as terminal oxidant N ‐( ω ‐imidazolyl)‐hexanoyl‐ L ‐phenylalanine co‐catalyst, quadruple‐mutant F87G/T268V/F77I/E140D efficiently catalyzed 3‐hydroxylation subsequent autooxidation to indigo with higher efficiency...
We recently developed an artificial P450–H2O2 system assisted by dual-functional small molecules (DFSMs) to modify the P450BM3 monooxygenase into its peroxygenase mode, which could be widely used for oxidation of non-native substrates. Aiming further improve DFSM-facilitated system, a series novel DFSMs having various unnatural amino acid groups was designed and synthesized, based on co-crystal structure typical DFSM, N-(ω-imidazolyl)-hexanoyl-L-phenylalanine, in this study. The size...
Polyfunctionalized (E)-haloalkylidene cyclic products were efficiently synthesized in moderate to excellent yields via a regio- and stereoselective X− (X = I or Br)-triggered ring-opening intramolecular trapping of cyclopropenes 1. The reaction can be used for construction 4−7-membered products. E-stereoselectivity the exo-C═C bond is very high. carbon−halogen may further elaborated prepare differently substituted with stereodefined C═C bond.
We report efficient laser emission on the 914 nm 4 F 3/2 to I 9/2 transition in Nd:YVO4 under pump with diode lasers at 888 for first time. Continuous wave 6.57 W output power is obtained from a V-type resonator 18.3 of absorbed power; slope efficiency respect was 60.6%. Moreover, intracavity frequency doubling BiB3O6 (BiBO) nonlinear crystal yielded 1.77 deep-blue light 457 beam quality characterized by an M2 factor 1.25.
A new process for synthesis of 5-aryl-3-phenylpyrazole is achieved. The regioselective ring-opening reaction 2-aryl-3-benzoyl-1,1-cyclopropanedicarbonitrile with hydrazine plays a crucial role in the described process.
This study investigates the impact of Zn alloying on dispersion reinforcing particle in Mg2Sn/Mg composites. In composite, manifests three distinct forms: segregation layer between MgMg2Sn, solid solution and MgZn2 phase. First-principles calculations confirm that formation decreases interfacial energy MgMg2Sn. Importantly, this significantly enhances comigration capability Mg2Sn particles with Mg matrix during sintering flow, effectively hindering agglomeration coarsening nano-sized The...
ABSTRACT High Performance Centrifugal Partition Chromatography (HPCPC) is a practical and suitable method, particularly on the preparative scale, for separation of biomolecules such as proteins, enzymes, etc. Aqueous two-phase system also very attractive isolation biomolecules. polymer phase composed polyethylene glycol 6000-potassium phosphate has been used countercurrent chromatographic bovine serum albumin (BSA) lysozyme using HPCPC. The BSA under various conditions flow rates, rotational...
A new and simple reversible photorhelogical (PR) micelle system was investigated, which is composed of the cationic Gemini surfactant propylene-(dimethyldioctadecylammonium chloride) (18-3-18) photoresponsive counter ion, trans-4-phenylazo benzoic acid (trans-ACA). Before UV irradiation, 18-3-18/trans-ACA mixtures with proper compositions formed highly viscoelastic fluids, showing good viscoelasticity, thixotropy, shear thinning properties. After rheological properties 18-3-18/ACA micelles...
Abstract A series of titanium complexes Cp*TiCl((OCH(R)CH 2 ) NAr) (Cp* = C 5 Me , R H, Ar Phenyl ( 2a) ; 2,6‐dimethylphenyl 2b ); Me, 2c )) was prepared by the reaction corresponding N,N ‐diethoxylaniline derivatives, with Cp*TiCl 3 in presence excessive triethylamine. All display higher catalytic activities towards syndiospecific polymerization styrene modified methylaluminoxane (MMAO) as a cocatalyst, and produce molecular weight polystyrenes syndiotacticity melting temperature than their...