A5100389129- Supramolecular Chemistry and Complexes
- Molecular Sensors and Ion Detection
- Porphyrin and Phthalocyanine Chemistry
- Chemical Reaction Mechanisms
- Analytical chemistry methods development
- Enzyme Catalysis and Immobilization
- Electrochemical sensors and biosensors
- DNA and Nucleic Acid Chemistry
- Analytical Chemistry and Sensors
- Luminescence and Fluorescent Materials
- Advanced NMR Techniques and Applications
- Crystallography and molecular interactions
- GABA and Rice Research
- Analytical Chemistry and Chromatography
Shanghai University
2018-2020
Significance Cavitands are nanoscale container molecules widely used in studies of molecular recognition and reactivity. They act as hosts that temporarily confine small molecule guests much their action reaction chambers is due to movable walls allowing the uptake release guests. Water-soluble organic-soluble cavitands featuring quinoxaline were prepared complexes with alkanes, amphiphilic characterized by 1 H NMR spectroscopy computational methods. The quinoxalines bound Pd(II) near rim...
The cavitand induced “yo-yo” motion was applied to mono-epoxidation reaction of α,ω-dienes using <italic>N</italic>-bromosuccinamide and K<sub>2</sub>CO<sub>3</sub> in D<sub>2</sub>O.
Significance Many studies have investigated secondary formamides as mixtures of cis and trans isomers. They are widespread in nature, but relatively low energetic barriers to interconversion prevent the isolation characterization pure Here, we determine hydrophilic differences between isomers by binding a water-soluble, synthetic molecular container. The container offers range environments from hydrophobic distinguishes subtle polarities formamide Using NMR methods, find that more than...
A deep cavitand binds long-chain trans,trans- and trans,cis-bis-formamide isomers in water solution giving a pair of caviplexes ca. 60:40 ratio. Both display in/out guest exchange dynamics that are slow on the 1 H NMR chemical shift timescale, but fast EXSY timescale. We apply diffusion-ordered spectroscopy (DOSY) to characterize caviplexes. On diffusion processes feature intermediate allowing assessment their kinetic stabilities. found form kinetically more stable than...
Alkyl halide guests in cavitands move rapidly and maintain to contact with the aryl surfaces of host.
A flow-injection analysis (FIA) new method of a continuous ion-exchange pretreatment and separation is given for the simultaneous determination silicate phosphate in biological samples. To remove interfering cations, sample solution passes through mini cation-exchange column connected at inlet outlet one loading loops two-channel valve, it again another loop valve sampling. After switched to inject position, defined injected passed seperation column, ions zone are separated. At same time,...