A5087946418- Semiconductor Quantum Structures and Devices
- Quantum and electron transport phenomena
- Catalytic C–H Functionalization Methods
- Surface and Thin Film Phenomena
- Radical Photochemical Reactions
- Electron and X-Ray Spectroscopy Techniques
- Carbon dioxide utilization in catalysis
- Synthesis and Catalytic Reactions
- Semiconductor materials and devices
- Quinazolinone synthesis and applications
- Nanomaterials for catalytic reactions
- Asymmetric Hydrogenation and Catalysis
- Spectroscopy and Laser Applications
- Catalytic Processes in Materials Science
- Covalent Organic Framework Applications
- Physics of Superconductivity and Magnetism
- Ammonia Synthesis and Nitrogen Reduction
- Chemical Synthesis and Analysis
- Acute Ischemic Stroke Management
- Protein Interaction Studies and Fluorescence Analysis
- Cyclone Separators and Fluid Dynamics
- Electronic and Structural Properties of Oxides
- Advanced Synthetic Organic Chemistry
- Surface Roughness and Optical Measurements
- Methane Hydrates and Related Phenomena
Sichuan University
2022-2025
Northern Jiangsu People's Hospital
2024
Anhui Science and Technology University
2020-2024
Anhui University of Science and Technology
2020-2024
Zhejiang University of Technology
2023-2024
Henan Cancer Hospital
2024
Zhengzhou University
2024
Hefei University of Technology
2013-2023
Fuzhou General Hospital of Nanjing Military Command
2023
Fujian Medical University
2022
A method for electrooxidative C(sp3)–H amination via intermolecular oxidative C(sp3)–H/N–H cross-coupling has been developed under metal- and oxidant-free conditions. The bonds adjacent to oxygen, nitrogen, sulfur atoms could all react smoothly with various amines give the corresponding products moderate good yields (30–93%). In addition, of benzylic allylic are also tolerated in this reaction. preliminary mechanistic study indicates that C–H cleavage tetrahydrofuran is probably not involved...
Abstract An efficient and simple method for the transamidation of carboxamides, phthalimide, ureas thioamide with amines catalyzed by commercially available benzoic acid under metal‐free conditions is described. Furthermore, to best our knowledge, this first report about an aromatic amines. magnified image
Transcranial magnetic stimulation and peripheral repetitive (rPMS), as non-invasive neuromodulation techniques, can promote functional recovery in patients with post-stroke spasticity (PSS), but the effects of transcranial combined on PSS remain largely unknown. Therefore, we examined low-frequency (LF-rTMS) rPMS its potential neural correlates to behavioral improvements.Forty-nine were divided randomly into three groups: a group (n = 20), LF-rTMS 15), control 14). The received treatment,...
The development of synthetic methods capable converting elemental sulfur into conjugated porous sulfur‐rich polymers remains a great challenge, although direct utilization this readily available feedstock can significantly enrich its uses and circumvent environmental problems during storage. We report herein mechanochemical (MC) nucleophilic aromatic substitution (SNAr) that enables sustainable conversion thianthrene‐bridged ladder polymer networks with dense donor‐acceptor (D‐A) molecular...
Abstract The development of semiconducting conjugated polymers for photoredox catalysis holds great promise sustainable utilization solar energy. Herein a new family porous methylated triazine‐based linear is reported that enable efficient photoreduction carbon dioxide (CO 2 ) with water (H O) vapor, in the absence any additional photosensitizer, sacrificial agents or cocatalysts. It demonstrated key lies generation triazine linkages through facile condensation reaction between benzamidine...
Abstract The development of synthetic methods capable converting elemental sulfur into conjugated porous sulfur‐rich polymers remains a great challenge, although direct utilization this readily available feedstock can significantly enrich its uses and circumvent environmental problems during storage. We report herein mechanochemical (MC) nucleophilic aromatic substitution (S N Ar) that enables conversion thianthrene‐bridged ladder polymer networks with dense donor‐acceptor (D−A) molecular...
The development of semiconducting materials for photoredox catalysis holds great promise sustainable utilization solar energy. Olefin‐linked covalent organic frameworks (COFs), which are built by linking structs into crystalline through C=C bonds, have attracted tremendous attention in photocatalysis due to their saliant advantages such as extended π‐conjugation, permanent porosity, exceptional chemical stability, light‐harvesting and charge separation abilities. This review offers a...
An analytic expression for the resonant, inelastic light scattering cross section from collective charge-density excitations of a semi-infinite semiconductor superlattice is derived. Raman intensities bulk and surface modes an n-type GaAs-${\mathrm{Al}}_{\mathrm{x}}$${\mathrm{Ga}}_{1\mathrm{\ensuremath{-}}\mathrm{x}}$As sample are analyzed. Calculations show that intersubband plasmons have higher intensity than intrasubband ones should be easier to observe experimentally. The line shapes...
A novel method of palladium-catalyzed oxidative carbonylation ketones, amines, and carbon monoxide for the synthesis 4-quinolones has been developed. This protocol provides a straightforward route to construct useful 4-quinolone derivatives from inexpensive chemicals.
A mild and environmentally electrochemical method for the synthesis of quinazolines quinazolinones has been developed through anodic oxidation decarboxylative α-oxocarboxylic acids. The present reaction was efficiently conducted by using simple cheap NH4I as N-source electrolyte in an undivided cell. desired products, quinazolinones, were isolated high yield under chemical oxidant free conditions.
A general and effective method for the synthesis of amides through decarboxylative amidation α-keto acids with amines has been developed. The reaction proceeded smoothly to afford corresponding amide products in good yield under air shows excellent functional group tolerance. In addition, protocol can be further applied heterocyclic compounds like benzimidazoles.
Aim: To evaluate the efficiency of tangential flow filtration (TFF) in improving yield human umbilical cord mesenchymal stem cell (hucMSC)-derived extracellular vesicles (EVs) while promoting regeneration under oxidative stress. Methods: HucMSC-EVs were extracted from supernatants by ultracentrifugation (UC-EVs) and TFF (TFF-EVs), followed feature characterization bioactivity assays. Results: The TFF-EVs increased 18-times compared with that UC-EVs. displayed proliferation-promoting ability...
The energy of the exciton formed from an electron and heavy hole in a narrow CdTe quantum well between barriers ${\mathrm{Cd}}_{1\mathrm{\ensuremath{-}}\mathrm{x}}$${\mathrm{Mn}}_{\mathrm{x}}$Te is evaluated using simple variational trial function. magnetic polaron effect, resulting exchange interaction carriers with localized Mn-ion spins located barrier, included. Because its heavier mass small quantum-well depth, much more dramatically influenced by effect tends to localize near one interfaces.
The intersubband and intrasubband collective excitations of a semi-infinite semiconductor superlattice are investigated. Surface excitations, similar to the surface modes predicted by Giuliani Quinn, found for wavelengths shorter than critical value ${\ensuremath{\lambda}}^{\mathrm{*}}$, which depends on material parameters.
We have studied the oscillator strength of lowest 1s heavy excitons in GaAs-AlAs quantum wells as a function well-layer thickness by means optical absorption. The is largely enhanced with decrease thickness. result first full experimental observation two-dimensional shrinkage exciton wave wells.
A simple and efficient method is reported for the synthesis of α-acyloxyketones in moderate to excellent yields from carboxylic acids ketones via electrochemical oxidative C(sp 3 )–H/O–H cross-coupling under metal- oxidant-free conditions.
The ground-state and binding energy of a Wannier exciton in quantum well with small valence-band offset are calculated by generalizing the variational approach normally used to study excitons GaAs/${\mathrm{Al}}_{\mathrm{x}}$${\mathrm{Ga}}_{1\mathrm{\ensuremath{-}}\mathrm{x}}$As wells. central issue is properly include additional confinement hole caused electron-hole Coulomb interaction direction perpendicular quantum-well interface. In addition relative motion part wave function, envelope...
A Co-containing zeolitic imidazolate framework (ZIF-67) and ordered macroporous carbon (OMC) composite has been made via in situ growing ZIF-67 the suspension of OMC. Different sizes ZIF67-OMC-x (400, 700, 1000 nm) hybrid composites were synthesis by adding different amount polyvinyl pyrrolidone (PVP). The SEM TEM images demonstrated that matched well with macropores OMC matrix as-prepared ZIF67-OMC-400 nm composites. intriguing structure utilized synergistic interactions between large...
Long-wavelength charge fluctuation models are constructed for 1:2:3 superconductors. These include planar plasmons ($\ensuremath{\omega}\ensuremath{\sim}\sqrt{q}$) plus numerous acoustical ($\ensuremath{\omega}\ensuremath{\sim}q$). We show that these modes do not cause pairing of electrons into a superconductor state. Our results rule out interlayer and intralayer by long-wavelength fluctuations.