A5100720614- DNA and Nucleic Acid Chemistry
- Advanced biosensing and bioanalysis techniques
- Supramolecular Chemistry and Complexes
- RNA Interference and Gene Delivery
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Molecular Sensors and Ion Detection
- Luminescence and Fluorescent Materials
- Chemical Synthesis and Analysis
- Supramolecular Self-Assembly in Materials
- Porphyrin and Phthalocyanine Chemistry
- Asymmetric Hydrogenation and Catalysis
- Photochemistry and Electron Transfer Studies
- Fullerene Chemistry and Applications
- Protein Interaction Studies and Fluorescence Analysis
- Lignin and Wood Chemistry
- Graphene research and applications
- Crystallography and molecular interactions
- Photoreceptor and optogenetics research
- Carbon dioxide utilization in catalysis
- Spectroscopy and Quantum Chemical Studies
- Metal-Organic Frameworks: Synthesis and Applications
- RNA and protein synthesis mechanisms
- Ionic liquids properties and applications
- Carbon Nanotubes in Composites
Institute of Chemistry
2016-2025
Northwestern Polytechnical University
2023-2024
Chinese Academy of Sciences
2015-2024
Beijing National Laboratory for Molecular Sciences
2015-2024
University of Chinese Academy of Sciences
2008-2024
China Three Gorges University
2023-2024
China Energy Engineering Corporation (China)
2023-2024
Yangtze River Delta Physics Research Center (China)
2024
Wannan Medical College
2024
State Key Laboratory for Structural Chemistry of Unstable and Stable Species
2003-2020
Asymmetric hydrogenation of quinolines catalyzed by chiral cationic η(6)-arene-N-tosylethylenediamine-Ru(II) complexes have been investigated. A wide range quinoline derivatives, including 2-alkylquinolines, 2-arylquinolines, and 2-functionalized 2,3-disubstituted were efficiently hydrogenated to give 1,2,3,4-tetrahydroquinolines with up >99% ee full conversions. This catalytic protocol is applicable the gram-scale synthesis some biologically active tetrahydroquinolines, such as...
Two new tetraphenylethylene (TPE) compounds 1 and 2 bearing adenine thymine moieties, respectively, were found to be fluorescence "turn on" chemosensors for Ag+ Hg2+ by making use of the AIE feature TPE motif specific binding adenine/thymine with Ag+/Hg2+.
Understanding the interactions between solvent molecules and cellulose at a molecular level is still not fully achieved in cellulose/N,N-dimethylacetamide (DMAc)/LiCl system. In this paper, cellobiose was used as model compound of to investigate cellulose/DMAc/LiCl solution by using Fourier transform infrared spectroscopy (FTIR), 13C, 35Cl, 7Li nuclear magnetic resonance (NMR) conductivity measurements. It found that when dissolved DMAc/LiCl cosolvent system, hydroxyl protons form strong...
Abstract Benzene is a widely used commodity chemical, which currently produced from fossil resources. Lignin, waste lignocellulosic biomass industry, the most abundant renewable source of benzene ring in nature. Efficient production lignin, requires total transformation C sp2 -C sp3 /C -O into C-H bonds without side hydrogenation, great importance, but has not been realized. Here, we report that high-silica HY zeolite supported RuW alloy catalyst enables situ refining exclusively to via...
Abstract Conversion of plastic wastes to valuable carbon resources without using noble metal catalysts or external hydrogen remains a challenging task. Here we report layered self-pillared zeolite that enables the conversion polyethylene gasoline with remarkable selectivity 99% and yields >80% in 4 h at 240 °C. The liquid product is primarily composed branched alkanes (selectivity 72%), affording high research octane number 88.0 comparable commercial (86.6). In situ inelastic neutron...
The thermal properties of single-walled boron nitride nanotubes are calculated. It is found that have a larger specific heat than carbon nanotubes. fitting formulas for diameter and chirality dependence at 300 K given. Moreover, conductance exhibits universal quantization low temperature, which independent the
Abstract RNA G-quadruplexes (G4s) play important roles in translational regulation, mRNA processing events and gene expression. Therefore, a fluorescent probe that is capable of efficiently recognizing G-quadruplex structures among other forms highly desirable. In this study, water-soluble fluorogenic dye (i.e., Thioflavin T (ThT)) was employed to recognize using UV–Vis absorption spectra, fluorescence spectra emission lifetime experiments. By stacking on the G-tetrad, ThT exhibited specific...
The endohedral fullerene Sc3NC@C80-Ih has been synthesized and characterized; it an unprecedented planar quinary cluster in a cage. It is also the first chemical compound which presence of (NC)3− trianion disclosed. fascinating intramolecular dynamics enables whole molecule to display high polarity promising ferroelectricity. This finding inspires possibility that such may be useful constructing many other fullerenes.
The G-quadruplex ligands database (G4LDB, http://www.g4ldb.org) provides a unique collection of reported to streamline ligand/drug discovery targeting G-quadruplexes. G-quadruplexes are guanine-rich nucleic acid sequences in human telomeres and gene promoter regions. There is growing recognition for their profound roles wide spectrum diseases, such as cancer, diabetes cardiovascular disease. Ligands that affect the structure activity can shed light on search G-quadruplex-targeting drugs....
The Zr-based metal-organic frameworks are generally prepared by solvothermal procedure. To overcome the slow kinetics of nucleation and crystallization is great interest challenging. Here, we find that an ionic liquid as solvent can significantly accelerate formation at room temperature. For example, reaction time shortened to 0.5 h in 1-hexyl-3-methylimidazolium chloride for framework formation, while conventional N,N-dimethylformamide needs least 120 h. mechanism was investigated situ 1H...
The motions of biomolecular machines are usually multistep processes, and involved in a series conformational changes. In this paper, novel triply interlocked [2](3)catenane composed tris(crown ether) host eTC circular ditopic guest with three dibenzyl ammonium (DBA) sites N-methyltriazolium (MTA) was reported. Due to the multivalency nature catenane, acid–base triggered motion performed by stepwise manner. coconformations four related stable states have been directly identified quantified...
The dissolution of cellulose in NaOH/urea aqueous solution at low temperature is a key finding science and technology. In this paper, 15N 23Na NMR experiments were carried out to clarify the intermolecular interactions cellulose/NaOH/urea solution. It was found that there are direct between OH– anions amino groups urea through hydrogen bonds no interaction cellulose. Moreover, Na+ ions can interact with both an system. These lead formation cellulose–NaOH–urea–H2O inclusion complexes (ICs)....
Superstretchable materials have many applications in advanced technological fields but are difficult to stretch more than 1000× their original length. A superstretchable dynamic polymer network that can be stretched 13 000× its length is designed. It revealed superstretchability of the derived from synergistic effect two different types bonds, including a small number strong imine bonds maintain integrity during stretching and large weak ionic hydrogen dissipate energy. This approach...
Abstract An aza‐crown ether, modified phosphoramidite ligand, has been designed and synthesized. The ON/OFF reversible switch of catalytic activity for its rhodium catalyst was thoroughly investigated in the asymmetric hydrogenation dehydroamino acid esters modulated by host–guest interactions. In OFF state, is almost inactive (less than 1 % conversion) because formation an intermolecular sandwich complex two ether moities cationic metal center. using alkali‐metal‐cations as trigger, turned...
Abstract For treating bone defects in periarticular fractures, there is a lack of biomaterial with injectable characteristics, tough structure, and osteogenic capacity for providing whole‐structure support osteogenesis the defect area. An hydrogel an ideal implant, however weak as load‐bearing scaffolds. Herein, new strategy, i.e., situ formation “active” composite double network (DN), raised preparation strong particularly against compression. As demonstration, 4‐carboxyphenylboronic acid...
Selective valorization of lignin to phenol is achieved by direct transformation C–C and C–O bonds.
Three-dimensional (3D) printing is becoming a revolutionary technique across various fields. Especially, digital light processing (DLP) 3D shows advantages of high resolution and efficiency. However, multifunctional monomers are commonly used to meet the rapid liquid-to-solid transformation during DLP printing, extensive production unreprocessable thermosets will lead resource waste environmental problems. Here, we report family dynamic polymers with highly tailorable mechanical properties...
Chemical transformation of spent polyesters into value-added chemicals is substantial for sustainable development but still challenging. Here, we report a simple, metal-free, and efficient aminolysis strategy to upcycle polylactic acid by anilines over lactate-based ionic liquids (e.g., tetrabutylammonium lactate), accessing series N-aryl lactamides under mild conditions. This also effective degradation poly(bisphenol A carbonate), affording bisphenol corresponding diphenylurea derivatives....
Abstract The chemical transformation of waste polymers into value-added chemicals is significance for circular economy and sustainable development. Herein, we report upcycling poly(succinates) (PSS) with amines N-substituted succinimides over succinimide anion-based ionic liquids (ILs, e.g, 1,8-diazabicyclo[5.4.0]undec-7-ene succinimide, [HDBU][Suc]). Assisted H 2 O, [HDBU][Suc]) showed the best performance, which could achieve complete a series PSS derivatives corresponding diols under mild...
In this paper, combined experimental and numerical methods were applied to investigate the effect of different contact stress slip amplitude on fretting fatigue (FF) behaviour TC11 titanium alloy with gradient nanostructure introduced by ultrasonic surface rolling process (USRP). The properties characterized using scanning electron microscope (SEM), transmission (TEM), X-ray residual tester, microhardness tester. As evidenced FF results, USRP can significantly improve life introducing large...
Winding and rewinding: How many times can helical aromatic oligomers wind around one another? At least four, as judged by the aggregation behavior of oligoamides based on 8-fluoroquinoline (see scheme depicting formation a quadruple helix; red spheres: sites in hollow space partially occupied water molecules).
For the first time, we have produced stable compound Sc(4)C(2)@C(80)-I(h) and characterized it as a metal carbide endofullerene by FTIR Raman spectroscopies in combination with DFT calculations. Furthermore, calculations demonstrated that this molecule has Russian-doll-type structure, C(2)@Sc(4)@C(80).
ADVERTISEMENT RETURN TO ISSUEPREVLetterNEXTHighly Selective Ratiometric Fluorescence Determination of Ag+ Based on a Molecular Motif with One Pyrene and Two Adenine MoietiesLei Liu†‡, Deqing Zhang†, Guanxin Junfeng Xiang†, Daoben Zhu†View Author Information Beijing National Laboratory for Sciences, Organic Solids Laboratory, Institute Chemistry, Chinese Academy 100190, China, Graduate School 100049, China[email protected]†Chinese Sciences.‡Graduate Sciences.Cite this: Org. Lett. 2008, 10,...
By making use of the aggregation-induced emission feature compound 1 and cascade reactions among acetylthiocholine iodide (ATC), AChE, 2, a new fluorescence "turn-on" method is developed for AChE assay inhibitor-screening.