SKU: 50542887230

Py-DHBD-COF

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Description

Py-DHBD-COFProduct Name NamePy DHBD COF Product Overview The concept of Covalent Organic Frameworks (COFs) materials was first proposed in 2005 by Yaghi et al., aiming to develop a new class of porous materials with highly ordered structures and specific functions. COF is a kind of crystalline organic porous polymer material with periodic structure formed by strong covalent bond of light elements (such as C, H, O, N, etc.). COF is derived from the polymerization

Product Name

Name:Py-DHBD-COF


Product Overview

 

The concept of Covalent Organic Frameworks (COFs) materials was first proposed in 2005 by Yaghi et al., aiming to develop a new class of porous materials with highly ordered structures and specific functions. COF is a kind of crystalline organic porous polymer material with periodic structure formed by strong covalent bond of light elements (such as C, H, O, N, etc.). COF is derived from the polymerization of small organic molecules. In order to meet the requirements of high crystallinity of COF materials, COF needs to continuously complete the recombination of covalent bonds in the polymerization process to form a long-range ordered crystal structure. Depending on the type of reaction, the main reactions to produce COF are: boric acid polycondensation (boron-oxygen bond), C-C coupling reaction (carbon-carbon bond), Schiff base reaction (imine bond), cyano-autopolymerization (triazine bond) and aryl ether polymerization (carbon-oxygen bond) reaction. Among them, CFS containing reversible boro-oxygen bonds, imine bonds and triazine bonds are the most common and widely used. The common methods of COF synthesis include solvothermal method, microwave assisted solvothermal method, mechanical force method, ionic thermal method and room temperature solution synthesis method.


Technical Parameter

 

Specific surface area: ~1440 m2/g

Pore size:~3.63 nm

 

Product Features

 

Low density: composed of C, H, O, N, B and other lightweight elements, low density.

High specific surface area: provides a large number of active sites and adsorption sites.

Chemical modifiability: Functional modifications can be made through the design and selection of organic monomers.

Good thermal stability and chemical stability: can maintain structural stability in a certain temperature and chemical environment.

Excellent pore properties: conducive to gas adsorption, storage and separation.

 

Application Fields

 

Gas storage and separation: COFs is known as a new type of porous crystal material for gas storage due to its high inherent specific surface area, extremely low density, high stability and adjustable pore size, such as storing hydrogen, carbon dioxide and other gases, and achieving efficient gas separation.

Catalysis: As a catalyst or catalyst carrier, participating in various chemical reactions. For example, improving the efficiency and selectivity of the reaction in organic synthesis. Its insolubility and high stability make it easy to separate from the reaction mixture, and the catalyst has good reusability.

Energy storage: Used for lithium-ion batteries, supercapacitors and other energy storage devices. Improve battery charging and discharging performance and cycle stability.

Sensing: Detect various substances in the environment, such as gas molecules, heavy metal ions, etc. It can be used for pollutant detection in environmental monitoring.

Liquid phase adsorption separation: A large number of open channels, large specific surface area, easy access to binding sites and high chemical stability make COF an excellent material for liquid phase adsorption.

 

Related Information

Please e-mail for the detailed characterization data.

E-mail:[email protected]

 

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SKU: 50542887230

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★★★★★ 5
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I had spinal surgery. These have saved me so much money in therapy. They are durable and the strengths are great as you build muscle.
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Reviewed in the United States on May 18, 2026
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Grantham, US
★★★★★ 5
Perfect!
Color: Coffee
Second pair (first one was a gift) and it’s perfect for what it is needed for! Love the colors and the little bag helps keep it clean and dust free. Love the colors! Delivery & process were great too.
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Reviewed in the United States on May 15, 2026
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Hillsong Melody
Whiting, US
★★★★★ 3
Rolls up easily
Color: Pastel, Color: Pastel
I purchased these bands after seeing all the positive reviews on Amazon. I like the color options and the variety of resistance bands, however the quality is not that great. Bands are thin and they roll up easily. I’ve used them both on bare skin (which I googled was not recommended because it irritates skin) and on top of leggings and both times the bands roll up. The bag it comes with is also very small and I basically have to roll up the bands to squeeze all of them in there. If you are a beginner at using bands, I think this product is alright. For more advanced workouts, would recommend better quality resistance bands.
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Reviewed in the United States on May 17, 2026
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Sailboat Steve
Chelsea, US
★★★★★ 5
A complete gym in your pocket.
Color: Assorted
Simple but effective. I'm able to pack these into almost anywhere and use them as a mini gym wherever I go. With a little creativity, they can be used to add resistance to almost any exercise. I use them for stretches, face pulls, bicep curls, and even with squats. 5 different resistance levels means you can mix and match to find the perfect resistance for whatever you're doing. I've had mine a couple of months now and have noticed no difference in elasticity or resistance, and I use them almost every day. Would definitely recommend as a portable resistance device and would definitely buy again.
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Reviewed in the United States on May 20, 2026
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Barbara B
Omaha, US
★★★★★ 5
A lot of comfort for a very inexpensive price
Style: 18", Color: Grey, Size: Twin
We needed a spare mattress, but didn’t want to have a dedicated spare bedroom but wanted a comfortable bed. Couldn’t afford these high priced mattresses these days like the air beds or luxury coil spring with gel which are thousands of dollars. Miss air mattresses, very comfortable and adorable and I like the flocked top on it. And it has the self inflatable pump which is very easy and inconvenient.This makes a very inexpensive alternative. Even if it only lasts 6 months or so you can buy a whole lot of these for a lot less money than thousands of dollars for the other beds. In tax is a wonderful brand. I’ve bought it many times. Their vinyl material is very thick and durable. Intex makes flotation devices, blowup rafts, beach floaties, Kayaks, etc. They have an excellent product & know what they’re doing.
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