A5100699829- Covalent Organic Framework Applications
- Metal-Organic Frameworks: Synthesis and Applications
- Supramolecular Chemistry and Complexes
- Synthetic Organic Chemistry Methods
- Polymer composites and self-healing
- Luminescence and Fluorescent Materials
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Chemical Synthesis and Analysis
- Advanced Photocatalysis Techniques
- Advanced Sensor and Energy Harvesting Materials
- Conducting polymers and applications
- Supramolecular Self-Assembly in Materials
- Synthesis and Properties of Aromatic Compounds
- Advanced Battery Materials and Technologies
- Advanced Polymer Synthesis and Characterization
- Graphene research and applications
- biodegradable polymer synthesis and properties
- Organometallic Complex Synthesis and Catalysis
- Advancements in Solid Oxide Fuel Cells
- Electrocatalysts for Energy Conversion
- Corrosion Behavior and Inhibition
- Porphyrin and Phthalocyanine Chemistry
- Nanomaterials for catalytic reactions
- High-Temperature Coating Behaviors
Hunan City University
2025
University of Colorado Boulder
2015-2024
Beihang University
2005-2024
Guizhou University
2022-2024
Huazhong University of Science and Technology
2024
Sun Yat-sen University
2020-2024
Zhejiang University of Technology
2015-2024
Key Laboratory for High Strength Lightweight Metallic Materials of Shandong Province
2024
Shenyang University of Technology
2022-2024
Hunan University
2020-2024
A catalyst-free malleable network polymer that can be reprocessed by application of either water or heat is prepared through imine chemistry. This material recycled from a fine powder to coherent solid with >100% recycling efficiency several generations. It also at ambient temperature using only water, thus potentially leading energy-neutral green processing the material.
A novel type of ionic covalent organic framework (ICOF), which contains sp(3) hybridized boron anionic centers and tunable countercations, was constructed by formation spiroborate linkages. These ICOFs exhibit high BET surface areas up to 1259 m(2) g(-1) adsorb a significant amount H2 (up 3.11 wt %, 77 K, 1 bar) CH4 4.62 273 bar). Importantly, the materials show good thermal stabilities excellent resistance hydrolysis, remaining nearly intact when immersed in water or basic solution for two...
Covalent organic frameworks (COFs) with well-defined and customizable pore structures are promising templates for the synthesis of nanomaterials controllable sizes dispersity. Herein, a thioether-containing COF has been rationally designed used confined growth ultrafine metal nanoparticles (NPs). Pt or Pd (Pt NPs NPs) immobilized inside cavity material have successfully prepared at high loading narrow size distribution (1.7 ± 0.2 nm). We found crystallinity support presence thioether groups...
Carbon-fiber reinforced composites are prepared using catalyst-free malleable polyimine networks as binders. An energy neutral closed-loop recycling process has been developed, enabling recovery of 100% the imine components and carbon fibers in their original form. Polyimine films made >21% recycled content exhibit no loss mechanical performance, therefore indicating all thermoset composite material can be reused for same purpose. As a service to our authors readers, this journal provides...
The current research in the field of dynamic covalent chemistry includes study reactions, catalysts, and their applications. Unlike noncovalent interactions utilized supramolecular chemistry, formation/breakage bonding has slower kinetics usually requires aid a catalyst. Catalytic systems that enable efficient thermodynamic equilibrium are thus essential. In this Account, we describe development catalysts for alkyne metathesis, discuss application reactions (mainly imine, olefin, metathesis)...
Novel electronic skin is rehealable and 100% recyclable.
A series of novel porous polymer frameworks (PPFs) with [3 + 4] structure motif have been synthesized from readily accessible building blocks via imine condensation, and the dependence gas adsorption properties on block dimensions functionalities was studied. The resulting imine-linked exhibit high surface area: Brunauer–Emmett–Teller (BET) specific area up to 1740 m2 g–1, a Langmuir 2157 g–1. More importantly, outstanding H2 (up 2.75 wt %, 77 K, 1 bar), CO2 26.7 273 CH4 2.43 C2H2 17.9 bar)...
Ionic covalent organic frameworks (ICOFs) have recently emerged as promising candidates for solid-state electrolytes. Herein, we report the first example of a series crystalline imidazolate-containing ICOFs single-ion conducting COF solid electrolyte materials, where lithium cations freely travel through intrinsic channels with outstanding ion conductivity (up to 7.2 × 10–3 S cm–1) and impressively low activation energy (as 0.10 eV). These properties are attributed weak Li ion–imidazolate...
Abstract A two‐dimensional covalent organic monolayer was synthesized from simple aromatic triamine and dialdehyde building blocks by dynamic imine chemistry at the air/water interface (Langmuir–Blodgett method). The obtained characterized optical microscopy, scanning electron atomic force which unambiguously confirmed formation of a large (millimeter range), unimolecularly thin polyimine sheet. imine‐linked chemical structure tip‐enhanced Raman spectroscopy, peak assignment supported...
Dynamic covalent chemistry (DCC) provides an intriguing and highly efficient approach for building molecules that are usually thermodynamically favored. However, the DCC methods enough to construct large, complex molecules, particularly those with three-dimensional (3-D) architectures, still very limited. Here, first time, we have successfully utilized alkyne metathesis, a approach, novel 3-D rectangular prismatic molecular cage COP-5 in one step from readily accessible porphyrin-based...
A series of novel organic cage compounds 1-4 were successfully synthesized from readily available starting materials in one-pot decent to excellent yields (46-90%) through a dynamic covalent chemistry approach (imine condensation reaction). Covalently cross-linked framework 14 was obtained the cage-to-framework strategy via Sonogashira coupling 4 with 1,4-diethynylbenzene linker molecule. Cage and exhibited exceptional high ideal selectivity (36/1-138/1) adsorption CO(2) over N(2) under...
In this paper, we experimentally demonstrated the reprocessing, recycling and repairing abilities of pulverized thermoset polymer with exchangeable bonds.
Bimetallic electrocatalysts can improve the activity and selectivity over their monometallic counterparts by tuning structure, morphology, composition. However, there scarcely was a systematic model to understand structural effect relationship on CO2 electrochemical reduction reaction, especially for product process introduction of second metal grow into outer layers. Herein, we report structure-controlled growth Ag@Cu bimetallic nanoparticles that are fabricated polyol method, is, reducing...
Advances in materials, chemistry, and mechanics enable self-healing, recycling, reconfiguring of wearable electronics.
Abstract Among various types of alternative energy devices, solid oxide fuel cells (SOFCs) operating at low temperatures (300‐600°C) show the advantages for both stationary and mobile electricity production. Proton‐conducting oxides as electrolyte materials play a critical role in low‐temperature SOFCs (LT‐SOFCs). This review summarizes progress proton‐conducting electrolytes LT‐SOFCs from to with emphases on (1) strategies that have been proposed tune structures properties ceramics, (2)...
The reaction of 5,5′-([2,2′-bipyridine]-5,5′-diyl)diisophthalaldehyde (BPDDP) with cyclohexanediamine and [benzidine (BZ)/[2,2′-bipyridine]-5,5′-diamine (BPDA)], respectively, affords a nitrogen-rich porous organic cage BPPOC two two-dimensional (2D) covalent frameworks (COFs), USTB-1 USTB-2 (USTB = University Science Technology Beijing), under suitable conditions. Interestingly, single-crystal X-ray diffraction structure is able to successfully transform into (newly converted COFs denoted...
Abstract All‐solid‐state lithium ion batteries (LIBs) are ideal for energy storage given their safety and long‐term stability. However, there is a limited availability of viable electrode active materials. Herein, we report truxenone‐based covalent organic framework (COF‐TRO) as cathode materials all‐solid‐state LIBs. The high‐density carbonyl groups combined with the ordered crystalline COF structure greatly facilitate via reversible redox reactions. As result, high specific capacity 268...
Development of closed-loop chemically recyclable plastics (CCRPs) that can be widely used in daily life a fundamental solution to the global plastic waste crisis. Hence, it is great significance develop easy-to-recycle CCRPs possess superior or comparable material properties commodity plastics. Here, novel dual crosslinked CCRP, namely, supramolecular covalent adaptable networks (supra-CANs), reported, which not only displays mechanical higher than strong and tough polycarbonate, but also...