A5101787135- Metal-Organic Frameworks: Synthesis and Applications
- Covalent Organic Framework Applications
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Nanomaterials for catalytic reactions
- Advanced NMR Techniques and Applications
- Chemical Synthesis and Reactions
- Zeolite Catalysis and Synthesis
- Catalytic Processes in Materials Science
- Nanocluster Synthesis and Applications
- Advanced Photocatalysis Techniques
- Solid-state spectroscopy and crystallography
- Mesoporous Materials and Catalysis
- Supercapacitor Materials and Fabrication
- Catalysis and Oxidation Reactions
- Electrocatalysts for Energy Conversion
- Luminescence and Fluorescent Materials
- Surface Chemistry and Catalysis
- Gas Sensing Nanomaterials and Sensors
- Graphene research and applications
- Radical Photochemical Reactions
- Catalysis and Hydrodesulfurization Studies
- Oxidative Organic Chemistry Reactions
- Asymmetric Hydrogenation and Catalysis
- Ammonia Synthesis and Nitrogen Reduction
Sichuan Agricultural University
2025
Yancheng Institute of Technology
2025
Lanzhou University
2012-2024
Leibniz Institute of Photonic Technology
2024
State Key Laboratory of Applied Organic Chemistry
2010-2021
Lanzhou City University
2019
Southwest Jiaotong University
2018
University of Waterloo
2018
Western University
2004-2014
Shenyang Jianzhu University
2012-2013
Covalent organic frameworks writ large framework (COF) materials have been difficult to characterize structurally and exploit because they tend form powders or amorphous materials. Ma et al. studied a variety of three-dimensional COFs based on imine linkages (see the Perspective by Navarro). They found that addition aniline inhibited nucleation allowed growth crystals enough for single-crystal x-ray diffraction studies. Evans describe two-step process in which nanoscale seeds boronate...
A two step programmed method is developed to load mono dispersed SnO2 nanoparticles onto single layer graphene sheets. The SnO2-G composite has near dispersion of the nanocrystals as well a high content over 60 wt%. These outstanding features are desirable and enable material be an excellent anode for Li-ion batteries.
Grain boundary management is critical to the performance and stability of polycrystalline perovskite solar cells (PSCs), especially large-area devices. However, typical passivators are insulating in nature limit carrier transport. Here, we design a supramolecular binder for grain boundaries simultaneously passivate defects promote hole transport across boundaries. By doping monoamine porphyrins (MPs, M = Co, Ni, Cu, Zn, or H) into films, MPs self-assemble supramolecules at Organic cations...
Owing to its diverse activation processes including single-electron transfer (SET) and hydrogen-atom (HAT), visible-light photocatalysis has emerged as a sustainable efficient platform for organic synthesis. These provide powerful avenue the direct functionalization of C(sp3)–H bonds under mild conditions. Over past decade, there have been remarkable advances in enantioselective bond via combined with conventional asymmetric catalysis. Herein, we summarize involving discuss two main pathways...
Functional microporous organic polymers (MOPs) are attractive in a wide range of applications including gas separation, catalysis, and energy storage. There is lack cost-effective processes to produce functional MOPs at industrial scale, which fact limits their practical applications. Here, we propose new low-cost strategy, based on the Scholl reaction, can directly link rigid building blocks obtain with high surface area highly structures. More importantly, this method suitable for various...
Methane and carbon dioxide are known greenhouse gases, the conversion of these two C1-building blocks into useful fuels chemicals is a subject great importance. By solid-state NMR spectroscopy, we found that methane can be co-converted on zinc-modified H–ZSM-5 zeolite (denoted as Zn/H–ZSM-5) to form acetic acid at low temperature range 523–773 K. Solid-state 13C 1H MAS investigation indicates unique nature bifunctional Zn/H–ZSM-5 catalyst responsible for this highly selective transformation....
Metal-nanocluster-doped porous materials are attracting considerable research attention due to their specific catalytic performance. In this study, core–shell metal–organic frameworks@covalent organic polymer (MOF@COP) nanocomposites were formed by the covalent linking of chemically stable COP on surface size-selective UiO-66-NH2. Pd nanoclusters with an average diameter ∼0.8 nm successfully confined in UiO-66-NH2@COP, and obtained nanoreactor, referred as UiO-66-NH2@COP@Pd, exhibited...
Growth of covalent organic frameworks (COFs) as single crystals is extremely challenging. Inaccessibility open-structured single-crystal COFs prevents the exploration structure-oriented applications. Herein we report for first time a non-interpenetrated COF, LZU-306, which possesses open structure constructed exclusively via assembly. With high void volume 80 %, LZU-306 was applied to investigate intrinsic dynamics reticulated tetraphenylethylene (TPE) individual aggregation-induced-emission...
The only way is up! "Bottom-up" construction of a robust chiral porous polymer (JH-CPP) embedded with the Jørgensen–Hayashi catalyst (JH) has been successfully achieved for highly efficient heterogeneous organocatalysis. high BET surface area, wide openings and interconnected nanopores JH-CPP increase accessibility catalytic sites as such shows excellent activity in catalyzing asymmetric Michael addition reaction (see scheme).
Knowledge of adsorbed gas dynamics within microporous solids is crucial for the design more efficient capture materials. We demonstrate that 17O solid-state NMR (SSNMR) experiments allow one to obtain accurate information on CO2 metal–organic frameworks (MOFs), using CPO-27-M (M = Mg, Zn) as examples. Variable-temperature (VT) SSNMR spectra acquired from 150 403 K yield key parameters defining motions. VT CPO-27-Zn indicate relatively weaker metal–oxygen binding and increased dynamics. a...
We report the structure and optical properties of a new Cu–cysteamine complex with formula Cu<sub>3</sub>Cl(SR)<sub>2</sub> (R = CH<sub>2</sub>CH<sub>2</sub>NH<sub>2</sub>), which shows intense luminescence upon UV or X-ray excitation.
Rapid progress has been witnessed in the past decade fields of covalent organic frameworks (COFs) and dynamic nuclear polarization (DNP). In this contribution, we bridge these two by constructing radical-embedded COFs as promising DNP agents. Via transfer from unpaired electrons to nuclei, realizes significant enhancement NMR signal intensities. One crucial issues is screen for suitable radicals act efficient polarizing agents, basic criteria which are homogeneous distribution fixed...
The fabrication of narrow-sized metal nanoclusters for heterogeneous catalysis has attracted widespread research attention. Nevertheless, it is still a significant challenge to fabricate highly dispersed metal-nanocluster-based catalysts with high activity and stability. In this study, 1,3,5-benzenetricarboxylate 1,2-diaminocyclohexane were used as precursors porous organic cages (POCs), CC3-R. CC3-R exhibited specific surface area microporous–mesoporous structure. addition, ultrafine Ru...
The selective oxidation of aniline to metastable and valuable azoxybenzene, azobenzene or nitrosobenzene has important practical significance in organic synthesis. However, uncontrollable selectivity laborious synthesis the expensive required catalysts severely hinders uptake these reactions industrial settings. Herein, we have pioneered discovery Zr(OH)4 as an efficient heterogeneous catalyst capable aniline, using either peroxide O2 oxidant, selectively obtain various azoxybenzenes,...
Reduced graphene oxide (RGO) was synthesized under H(2)/Ar treatment from 100 °C to 900 °C. RGO-300 shows excellent sensitivity H(2) and a dual sensing mode observed. The balance between the chemical adsorption capacity electronic conductivity, dominance of either electrons or holes are key factors.
Solid-state (13)C magic angle spinning (MAS) NMR spectroscopy investigations identified zinc methyl species, formate and methoxy species as C(1) surface formed in methane activation on the zeolite Zn/H-ZSM-5 catalyst at T≤573 K. These which are possible intermediates further transformations of methane, were prepared separately by adsorption (13)C-enriched carbon monoxide, methanol onto zinc-containing catalysts, respectively. Successful isolation each allowed convenient into their chemical...
Abstract We report herein for the first time incorporation of a versatile organocatalyst, 4‐( N,N ‐dimethylamino)pyridine (DMAP), into network nanoporous conjugated polymer (NCP) by “bottom‐up” approach. The resulting DMAP‐NCP material possesses highly concentrated and homogeneously distributed DMAP catalytic sites (2.02 mmol g −1 ). also exhibits enhanced stability permanent porosity due to strong covalent linkage rigidity monomers. As result, shows excellent activity in acylation alcohols...