A5102025991- Analytical chemistry methods development
- Pesticide Residue Analysis and Safety
- Molecular spectroscopy and chirality
- Spectroscopy and Quantum Chemical Studies
- Analytical Chemistry and Chromatography
- Biosensors and Analytical Detection
- Crystallization and Solubility Studies
- Protein Structure and Dynamics
- X-ray Diffraction in Crystallography
- Insect and Pesticide Research
- Electrochemical Analysis and Applications
- Electrochemical sensors and biosensors
- Axial and Atropisomeric Chirality Synthesis
- Gold and Silver Nanoparticles Synthesis and Applications
- Pesticide and Herbicide Environmental Studies
- Advanced biosensing and bioanalysis techniques
- Paraquat toxicity studies and treatments
- Antibiotics Pharmacokinetics and Efficacy
- Nonlinear Optical Materials Research
- Water Treatment and Disinfection
- Photochemistry and Electron Transfer Studies
- Melamine detection and toxicity
- Carbon and Quantum Dots Applications
- Pharmacological Effects and Assays
- Enzyme Structure and Function
Tianjin University
2024
China North Industries Group Corporation (China)
2024
Yantai Institute of Coastal Zone Research
2024
Chinese Academy of Sciences
2024
Yantai University
2019-2024
Jiangxi Academy of Agricultural Sciences
2023
Chinese Academy of Agricultural Sciences
2016-2019
Institute of Quality Standards and Testing Technology for Agro Products
2016-2019
Ministry of Agriculture and Rural Affairs
2017-2018
Ministry of Agriculture and Agro Based Industry
2018
Abstract Advances in the measurement, calculation, and application of vibrational circular dichroism (VCD) for determination absolute configuration are described. The purpose review is to provide an up‐to‐date perspective on capability VCD solve problems stereochemistry chiral molecules primarily solution state. scope article covers experimental methods needed accurate measurement spectra theoretical steps required systematically deduce configuration. Determination a molecule by requires...
We have measured the band profile of amide I in infrared, isotropic, and anisotropic Raman spectra L-alanyl-D-alanyl-L-alanine, acetyl-L-alanyl-L-alanine, L-vanyl-L-vanyl-L-valine, L-seryl-L-seryl-L-serine, L-lysyl-L-lysyl-L-lysine at acid, neutral, alkaline pD. The respective intensity ratios two bands depend on excitonic coupling between modes peptide group. These were obtained from a self-consistent spectral decomposition then used to determine dihedral angles groups by means recently...
Similar, unusually large vibrational circular dichroism (VCD) spectra in the amide I and II region for aqueous solutions of proteins lysozyme insulin are presented under conditions heating at low pH that known to induce fibril formation. Centrifugation allows separation a gel phase from proto-filament supernatant where VCD indicative presence proto-filaments, compared native protein, is observed. Development even larger over longer time periods, growing magnitude changing relative...
Surface-enhanced Raman scattering (SERS) has been widely used in the detection of targets and strongly depends on interaction distance between nanoparticles. Herein, metal-organic frameworks (MOFs) were first easily synthesized a large scale via water bath method, especially Uio-66 Uio-67. MOFs embedded with gold nanoparticles (AuNPs) for SERS enhancement successfully fabricated an impregnation strategy. The AuNPs/MOF-199, AuNPs/Uio-66, AuNPs/Uio-67 composites, LSPR properties high...
The process of fabrication Fe<sub>3</sub>O<sub>4</sub>/MOF-199 composites and adsorbing pesticides.
The infrared spectrum, molecular structure, and conformations of l-tryptophan in isolated zwitterionic form have been studied by means a recently developed sampling technique ab initio orbital calculations using nonaqueous self-consistent reaction field (SCRF). A complete mid-IR spectrum monomeric tryptophan was obtained solid solvent KBr. SCRF KBr as the continuum at HF/6-31G(d,p) level were performed on to predict its structure vibrational frequencies. Three possible conformers found, one...
Density functional theory calculations of the vibrational circular dichroism (VCD) spectra a transition metal complex, (+)-tris(ethylenediaminato)cobalt(III) as free ion and with associated chloride ions, are reported. By comparison experimental data obtained in our laboratory 1986 (Young et al. J. Am. Chem. Soc. 1986, 108, 7255) new measurements, this study identifies, for first time, geometry absolute configuration association complex Λ-δδδ-Co(en)3Cl2+, which two ions each associate three...
We present the first study of chirality from UV to IR region for a conducting polymer, thereby probing motion metallic "free carriers." Through chiral and achiral camphorsulfonic acid (CSA) doped polyaniline (PAN) films cast different solvents (m-cresol chloroform) correlations with secondary doping experiments, we demonstrate that lies in order "metallic" regions polymer films. Samples were studied by absorption, UV−vis−IR circular dichroism, charge transport (temperature-dependent dc...
The first use of Fourier transform vibrational circular dichroism (FT-VCD) to follow changes in the percent enantiomeric excess (% EE) chiral molecules time using a flow cell sampling apparatus is reported. FT-VCD, as opposed dispersive scanning VCD, eliminates need scan VCD spectrum monitor % EE at more than one spectral location. partial least-squares chemometric analysis determine values from kinetic sets data also These two advances have been used simultaneously fractional composition...
Abstract Magnetic zeolitic imidazolate framework 67/graphene oxide composites were synthesized by one‐pot method at room temperature for the first time. Electrostatic interactions between positively charged metal ions and both negatively graphene Fe 3 O 4 nanoparticles expected to chemically stabilize magnetic generate homogeneous products. The additional amount of stirring time oxide, Co 2+ , solution investigated. 67 uniformly attached on surface oxide. applied solid‐phase extraction five...