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What is the chemical structure of bis-1h-pyrrole-5-dione 1,1 '- (1,3-phenylene)?
The chemical substance corresponding to 1% 2C1% 27-% 281% 2C3 - phenylene% 29bis - 1h - pyrrole - 5 - dione is 1,1 '- (1,3-phenylene) bis (1H-pyrrole-5-dione). The following describes its chemical structure in the style of the ancient saying of "Tiangong Kaiwu":
This compound is based on phenylene group, which contains three carbons and is connected in pairs, showing a potential of metaphase. At both ends of the phenylene group, each is connected with a 1H-pyrrole-5-dione structure.
1H-pyrrole is a five-membered nitrogen-containing heterocycle, in which one nitrogen atom and four carbon atoms co-form its ring. At the 5th position of the pyrrole ring, it is connected to a dicarbonyl group. The so-called carbonyl group is also the structure of the carbon-oxygen double bond.
Therefore, in the overall view, 1,1 '- (1,3-phenylene) bis (1H-pyrrole-5-dione) is connected to two identical 1H-pyrrole-5-dione structures with 1,3-phenylene as the hub, just like the two compounds use phenylene as the beam, with left and right phases in their respective positions, to co-form this unique chemical structure. This structure gives the compound specific chemical properties and reactivity due to the spatial arrangement and chemical bonding of the atoms.
What are the main physical properties of 1,1 '- (1,3-phenylene) bis-1h-pyrrole-5-dione?
1%2C1%27-%281%2C3-phenylene%29bis-1h-pyrrole-5-dione, this is an organic compound, Chinese name or 1,1 '- (1,3-phenylene) bis (1H-pyrrole-5-dione). Its main physical properties are as follows:
- ** Appearance and properties **: Usually crystalline solid, pure white in appearance, but due to impurities or preparation process differences, or with a little color. Just like natural jade, when not carved, often with variegated colors.
- ** Melting point **: This compound has a high melting point, mostly above 200 ° C. This shows that the intermolecular force is strong, the structure is stable, like a strong fortress, and high temperature is required to break its lattice. < Br > - ** Solubility **: In common organic solvents, such as dichloromethane, chloroform, N, N-dimethylformamide (DMF), etc., there is a certain solubility. However, the solubility in water is very small, because its molecular structure contains hydrophobic phenyl and pyrrole rings, which have weak affinity with water, just like oil and water, it is difficult to blend.
- ** Density **: The density is slightly higher than that of water. It will sink to the bottom when placed in water, like a stone entering water, and follows the principle of density.
- ** Stability **: Stable under conventional conditions. In special cases such as high temperature and strong oxidants, it will react. If it burns in case of fire, it will decompose in case of strong acid and alkali. Like a mild person, it will also change in case of extreme environments. < Br > - ** Spectral characteristics **: In the infrared spectrum, the carbonyl group (C = O) has a characteristic absorption peak, about 1700-1800 cm. It looks like a unique fingerprint and can be identified. In the hydrogen NMR and carbon spectra, each hydrogen atom and carbon atom exhibit a specific chemical shift according to their chemical environment, providing key clues for structural analysis, just like a structural map drawn by a chemist.
Where are 1,1 '- (1,3-phenylene) bis-1h-pyrrole-5-dione used?
1%2C1%27-%281%2C3-phenylene%29bis-1h-pyrrole-5-dione, this is the expression of a chemical substance, the Chinese name may be 1,1 '- (1,3-phenylene) bis-1H-pyrrole-5-dione. It has applications in many fields, and this is for you to explain in detail.
In the field of materials science, this substance can be used as a key monomer for the construction of new polymer materials. Because of its special molecular structure, it can endow polymer materials with unique properties. Taking the synthesis of high-performance polymers as an example, introducing them into the polymer backbone can enhance the rigidity and stability of the polymer, improve the heat resistance and mechanical properties of the material, and may be able to show its talents in industries that require strict material properties such as aerospace and automobile manufacturing. < Br >
In the field of medicinal chemistry, this compound may have potential biological activity. Some groups in its structure may interact with specific targets in organisms. Physicians and pharmacists may use this to conduct in-depth research and develop new drugs. For example, after modification, it may be expected to become an effective drug for treating specific diseases, contributing to human health and well-being.
Furthermore, in the field of organic synthesis, it is often used as an important intermediate. Chemists can modify and derive its structure through various chemical reactions. By ingeniously designing the reaction path, organic compounds with more complex structures and unique functions can be synthesized, enriching the variety of organic compounds and injecting new impetus into the development of organic synthetic chemistry. < Br >
In the field of optoelectronic materials, its unique electronic structure may endow materials with special optoelectronic properties. It can be used to prepare organic Light Emitting Diode (OLED), solar cells and other optoelectronic device materials. Or it can improve the luminous efficiency and charge transfer performance of the device, promote the progress of optoelectronic technology, and open up new prospects in the field of display technology and energy.
What is the preparation method of 1,1 '- (1,3-phenylene) bis-1h-pyrrole-5-dione?
To make 1%2C1%27-%281%2C3-phenylene%29bis-1h-pyrrole-5-dione, the method is as follows:
Usually start with 1,3-phenylenediamine and maleic anhydride. In a suitable reaction vessel, mix the two according to the appropriate stoichiometric ratio. Among them, the choice of solvent is very important, and organic solvents such as N, N-dimethylformamide (DMF), dichloromethane, etc. can be selected, which can dissolve the reactants well and promote the smooth progress of the reaction.
When reacting, temperature control is required. Generally speaking, start at a moderate low temperature to allow the reactants to interact initially, and then gradually heat up. The rate of heating and the final temperature depend on the specific situation of the reaction, and the reaction is maintained within a certain temperature range for several hours to make the reaction sufficient. Among them, if the temperature is too high, it is feared that side reactions will occur, which will affect the purity of the product; if it is too low, the reaction rate will be slow and it will take too long.
After the reaction is completed, the separation and purification of the product is also the key. You can first use vacuum distillation to remove part of the solvent. Then, according to the characteristics of the product and impurities, crystallization, column chromatography, etc. are selected to refine. If the crystallization method is selected, an appropriate solvent needs to be selected to make the solubility of the product change significantly with temperature. After cooling, crystallization, filtration and other steps, a relatively pure product is obtained; if column chromatography is used, the product and impurities are separated according to the distribution coefficients in the stationary phase and the mobile phase. Through these steps, 1%2C1%27-%281%2C3-phenylene%29bis-1h-pyrrole-5-dione product can be obtained.
What is the safety of 1,1 '- (1,3-phenylene) bis-1h-pyrrole-5-dione?
1%2C1%27-%281%2C3-phenylene%29bis-1h-pyrrole-5-dione, chemical substances are also important. To know their safety, there must be many factors.
This chemical substance may be used in the context of general labor and scientific research. If it is toxic, it needs to be used in the environment, and it has harmful effects. If it is used in the environment, it will cause organ damage and physiological damage, and it must be used with caution.
Also need to be considered if it is exposed. If it is used in the environment or in the environment, it is easy for people to contact it, and it is necessary to prevent its skin and breathing from entering the environment. If it is sensitive, it is easy to disperse in the air, and it is even more necessary to control the working environment, ensure the well-being, and make the operator less vulnerable to its harm.
Furthermore, the shadow of the environment cannot be ignored. If this thing enters nature, it is necessary to check the ease of its degradation, and there is a risk of being tired. If it degrades and is tired, it may cause a balance of life and a general organism.
For the safety of the 1%2C1%27-%281%2C3-phenylene%29bis-1h-pyrrole-5-dione, it must be studied in terms of toxicology, exposure, and environment. Only then can it be comprehensive, and the use can be avoided and the safety of people's environment can be ensured.
