2,2'-[Biphenyl-4,4'-Diyldi(E)Ethene-2,1-Diyl]Dibenzenesulfonic Acid

2% 2C2% 27-% 5B biphenyl - 4% 2C4% 27 - diyl di (E) ethylene - 2% 2C1 - diyl% 5D dibenzoic acid is useful in various fields. "Tiangong Kaiwu" says: "All skills in the world have their own uses, and each is suitable for its needs." The same is true of this thing.
First, in the field of materials science, it is often used as a raw material for the preparation of high-performance polymer materials. Due to its special molecular structure, the polymer can have good thermal stability, mechanical properties and optical properties. The resulting material can be used in high-end fields such as aerospace, electronics, and appliances. Just as "Tiangong Kaiwu" said, "refined materials are used to obtain good products." This material has been carefully prepared and can be used in high-end industries.
Second, in the optical field, its fluorescence performance is quite good, and it can be used as a material for fluorescent probes, Light Emitting Diode and other optoelectronic devices. It can keenly detect specific substances or emit bright light. It is suitable for biological imaging, display technology, etc., just like the good use of various material properties in "Tiangong Kaiwu" to give full play to its optical advantages.
Third, in the field of biomedicine, because of its stable structure and partial biocompatibility, it can be used for the development of drug carriers. It can precisely carry drugs to the lesion, improve the efficacy of drugs, and reduce side effects, just like the ancient physicians' exquisite processing and compatibility of medicinal materials, making it play a unique role in biomedicine.
Fourth, in scientific research experiments, it is often a key intermediate in organic synthesis. Chemists use this to build complex organic molecular structures and explore new chemical reaction paths, just like the craftsmen's research and innovation in technology in "Tiangong Kaiwu", which promotes the development of organic chemistry.

2% 2C2% 27-% 5B biphenyl-4% 2C4% 27-diyl di (E) ethylene-2% 2C1-diyl% 5D dibenzoic acid, this is an organic compound. Its physical properties are quite unique.
Looking at its morphology, under room temperature and pressure, it is mostly white to light yellow solid powder, which is caused by the orderly arrangement of molecules due to intermolecular forces. The melting point of this compound is about a specific temperature range. Due to the interaction between the styrene ring and the vinyl group in the molecular structure, a relatively stable lattice is formed. It requires a certain amount of energy to destroy the lattice and cause it to melt.
When it comes to solubility, it has a certain solubility in common organic solvents such as dichloromethane and chloroform. This is because the molecular structure of the compound has a certain hydrophobicity, and the intermolecular force with the organic solvent can promote its dissolution. However, in water, the solubility is extremely low, and the overall non-polarity of its molecules is strong, making it difficult to form effective interactions with water molecules.
Its density also has a specific value, which is determined by the molecular mass and the way of molecular accumulation. Under specific conditions, the density of the compound can ensure that it occupies a certain space in the relevant system, which affects its mixing and dispersion state with other substances.
In addition, when the compound is in the solid state, it has a certain crystallinity, and its crystal structure is regular, which also affects its optical, electrical and other properties. Under the action of light, or due to intra-molecular electron transitions and other processes, it exhibits specific optical properties, which are closely related to the π-electron conjugation system in molecules.

This compound is named 2,2 '- [binaphthalene-4,4' -diyl di (E) ethylene-2,1-diyl] dinaphthol, and its chemical stability is affected by many factors. Structurally, the naphthalene ring and vinyl structure endow it with a certain conjugated system. Conjugated systems usually enhance the stability of molecules, and electrons can be delocalized in conjugated systems, reducing the energy of molecules. However, there are carbon-carbon double bonds in this compound, that is, vinyl parts, and carbon-carbon double bonds have high reactivity. Under the conditions of light, heat or the presence of a suitable catalyst, the double bond can undergo an addition reaction, such as with halogens, hydrogen halides and other electrophilic reagents, which will change the molecular structure and then affect its stability. In addition, the presence of phenolic hydroxyl groups also has an effect on stability. The hydrogen atoms in the phenolic hydroxyl group have a certain acidity. In an alkaline environment, the phenolic hydroxyl group easily loses protons to form phenolic anions. The phenolic anions are stable due to the resonance effect, but this also makes the compound more susceptible to react with basic substances, thus affecting its stability under alkaline conditions. In summary, 2,2 '- [binaphthalene-4,4' -diyl di (E) ethylene-2,1-diyl] dinaphthol is not absolutely stable, and its stability varies under different conditions, which needs to be determined according to the specific environment.

To prepare 2,2 '- [binaphthalene-4,4' -diyl di (E) ethylene-2,1-diyl] dinaphthalene acid, the method is as follows:
First take binaphthalene as a group, modify it by appropriate method to obtain binaphthalene intermediates containing reactive groups. This step requires mild conditions to ensure that the structure of the binaphthalene is stable and prevent side reactions.
Second take the reagent with vinyl and connect it with the above intermediates by coupling method. Palladium-catalyzed coupling reactions are often preferred, such as Suzuki coupling or Heck coupling. During the reaction, temperature control, time control and selection of suitable solvents and bases are essential. Such as Suzuki coupling, with potassium carbonate as a base, toluene, ethanol and water mixed solvent is appropriate, stirred at an appropriate temperature, can promote the intermediate and vinyl-containing reagent to connect to form a binaphthalene product with ethylene structure. After
, the obtained product is re-modified to introduce an acid group. It can be reached by a series of reactions such as substitution and oxidation. When choosing the reaction conditions, it is necessary to introduce a pair of acid groups into the check point control, and avoid other groups from being disturbed. After each step of reaction, it is purified by column chromatography, recrystallization, etc., to remove impurities and improve the purity of the product. After this series of steps, 2,2 '- [binaphthalene-4,4' -diyl di (E) ethylene-2,1-diyl] dinaphthalene acid can be obtained.

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