Name | 7,8 - Benzoquinoline |
Molecular Formula | C13H9N |
Molar Mass | 179.22 g/mol |
Appearance | Solid |
Color | Pale yellow to colorless |
Melting Point | 125 - 127 °C |
Boiling Point | 360 - 362 °C |
Solubility In Water | Insoluble |
Solubility In Organic Solvents | Soluble in common organic solvents like ethanol, chloroform |
Odor | Characteristic, faint odor |
Density | 1.162 g/cm³ (approx.) |
Pka | ~5.4 |
What are the main uses of 7,8-benzoquinoline?
7,8-Octadiyne-square-ene is a class of organic compounds with unique structures. Its main uses are as follows:
First, in the field of organic optoelectronic materials, 7,8-octadiyne-square-ene exhibits excellent photoelectric properties. Due to its special molecular structure, it has good charge transfer ability and high fluorescence quantum yield. Therefore, it can be used to prepare organic Light Emitting Diode (OLED). With its high-efficiency luminescence properties, OLED displays can achieve higher brightness and color saturation, injecting new vitality into the development of display technology. It can also be applied to organic solar cells, with excellent charge transfer capacity, improving battery photoelectric conversion efficiency and promoting progress in the field of renewable energy.
Second, in the field of supramolecular self-assembly, 7,8-octadiyne-square-ene can be used as a building block to participate in the supramolecular self-assembly process due to its unique geometric shape and electronic properties. Supramolecular aggregates with specific structures and functions are formed through non-covalent interactions between molecules, such as π-π stacking, hydrogen bonding, etc. These aggregates may have novel optical, electrical or catalytic properties, which have great application potential in the fields of materials science and nanotechnology, and can be used to prepare functional materials such as nanosensors and molecular machines.
Third, in other aspects of materials science, 7,8-octadiyne-square-ene can be introduced into polymer materials as a structural unit to improve material properties. Due to its rigid conjugate structure, it can enhance the mechanical properties and thermal stability of polymer materials. At the same time, its unique optical properties can give polymer materials new optical functions, such as fluorescent marking, light response, etc., expand the application range of polymer materials, and play an important role in aerospace, automotive industry and other fields that require strict material properties.
What are the physical properties of 7,8-benzoquinoline?
The physical properties of 7, 8-krypton-benzene two-photons are as follows:
Krypton-benzene two-photon materials have unique optical properties. They have a high two-photon absorption cross-section, which is a key indicator of two-photon absorption efficiency. A large absorption cross-section means that under the same light intensity, the material can absorb two-photons more efficiently, which in turn exhibits a significant two-photon induction effect. For example, in the field of two-photon fluorescence imaging, a larger two-photon absorption cross-section allows the material to emit a stronger fluorescence signal, enabling high-resolution imaging, providing a powerful tool for observing cell structure and biomolecular activity in biomedical research.
At the same time, krypton-benzene two-photon materials have high fluorescence quantum yields. The fluorescence quantum yield characterizes the ability of a material to emit fluorescence after absorbing photons. High fluorescence quantum yield means that the absorbed two-photon energy can be efficiently converted into fluorescence emission, allowing the material to emit bright fluorescence. When applied in optoelectronic devices, such as organic Light Emitting Diodes (OLEDs), the luminous efficiency of the device can be improved, and low energy consumption and high brightness emission can be achieved.
Furthermore, the material has good stability. Whether it is under external environmental factors, such as temperature, humidity changes, or long-term lighting conditions, its physical and chemical properties can remain relatively stable. This is extremely important in practical applications. For example, in the field of optical storage, data needs to be stored stably for a long time. Material stability ensures that the stored information will not be lost or damaged due to environmental changes or long-term use.
In addition, kryptonobenzene two-photon materials also have a suitable energy level structure. This enables them to effectively couple with specific light sources, accurately absorb two-photon energy and achieve energy level transition, and then generate the expected optical response, which lays the foundation for their application in optical information processing fields such as optical switching and optical modulation. The optical state of the material can be precisely regulated according to external optical signals, and the information can be processed and transmitted quickly.
What are the chemical properties of 7,8-benzoquinoline?
The compounds of 7,8-boron-5-membered cyclotrons have unique chemical properties, which have key applications in many fields. This compound has the following significant chemical properties:
One is high fluorescence quantum yield. Boron-5-membered cyclotrons typically exhibit high fluorescence quantum yield, which means they can efficiently convert absorbed light energy into fluorescence emission. This property makes them show excellent application potential in fluorescent probes, biological imaging, and other fields. In biological imaging, high fluorescence quantum yield allows labeled biomolecules to emit strong fluorescence signals, making it easy for scientists to clearly observe the behavior and distribution of molecules in organisms.
The second is good photostability. Boron-based five-membered ring photocompounds often have good photostability, and are not prone to photobleaching or photodecomposition under long-term light exposure. This property makes them popular in optoelectronic devices, such as organic Light Emitting Diodes (OLEDs). In OLEDs, stable light-emitting materials are the key elements to ensure the long life and high performance of the device.
The third is the adjustable electronic structure. By modifying the molecular structure of boron-based five-membered ring photocompounds, its electronic structure can be effectively regulated, and then its optical and electrical properties can be adjusted. For example, the introduction of different substituents on the boron-based five-membered ring can change the energy level structure of the molecule, thus achieving precise regulation of fluorescence wavelength emission. This flexibility allows the compound to be customized according to specific needs in fields such as luminescent materials and photocatalysis.
The fourth is strong electron affinity. The presence of boron atoms endows boron-5-membered ring photocompounds with relatively strong electron affinity, making them easy to accept electrons to form stable negative ions. This property is crucial in the field of organic photovoltaic cells, which can help improve the separation and transmission efficiency of the battery to photogenerated carriers, thereby improving the photoelectric conversion efficiency of the battery.
Boron-5-membered ring photocompounds, with these excellent chemical properties, demonstrate great application value and development potential in many cutting-edge fields such as materials science and biomedicine, and continue to attract researchers to explore and innovate applications.
What are the synthesis methods of 7,8-benzoquinoline?
The synthesis method of 7,8-naphthalene pyrrolidinone has been known since ancient times. There are many methods, each of which is exquisite, and has evolved with the times, and new techniques have also emerged.
In the past, there were naphthalene-based, supplemented by various reagents, after several steps of reaction, to obtain this compound. At first, the naphthalene is introduced into the halogen atom by the method of halogenation. At this step, the temperature, time and amount of reagent must be controlled. The orientation of the halogen atom is also related to the success or failure of the subsequent reaction. After halogenation, it is combined with a nitrogen-containing reagent with a specific structure, and under appropriate solvent and catalytic conditions, a nucleophilic substitution reaction is carried out to form a key intermediate. Intermediates are then oxidized or dehydrated to cyclize to obtain 7,8-naphthalene pyrrolidone.
There are also those who use natural products as starting materials. Looking for substances containing naphthalene rings or related structures in nature can also achieve this purpose through ingenious modification and transformation. The advantage of natural products is that they have unique structures and are green and environmentally friendly. However, the process of separation and purification may be cumbersome, and the source of raw materials may be limited.
Since modern times, the art of organic synthesis has been refined, and catalytic synthesis has emerged. Selecting efficient catalysts, such as metal complexes or enzyme catalysts, can make the reaction conditions mild and improve the selectivity and yield of the reaction. Metal complex catalysts can precisely regulate the active center of the reaction, while enzyme catalysts have a high degree of specificity, both of which open up a new way for the synthesis of 7,8-naphthalene pyrrolidone. Microwave radiation, ultrasound-assisted techniques are also gradually used in this synthesis, which can accelerate the reaction process, reduce time and increase efficiency, which is the best way for synthetic chemistry.
In which fields is 7,8-benzoquinoline used?
7,8-Dihydroxyflavonoids are useful in various fields.
In the field of medicine, this flavonoid has attracted much attention. It has neuroprotective effect, can protect nerve cells from damage, and may be useful in the prevention and treatment of neurodegenerative diseases such as Parkinson's disease and Alzheimer's disease. It can help nerve cells survive and grow, and can regulate the release and metabolism of neurotransmitters, so that the function of the nervous system can be normal. It also has antioxidant effect, can remove free radicals in the body, reduce oxidative stress damage to cells, prevent cytopathies, or is also beneficial to cardiovascular diseases and cancers.
In the field of agriculture, 7,8-Dihydroxyflavonoids also show its ability. It can be used as a plant growth regulator to promote plant growth and development. It can adjust the balance of plant hormones, increase plant photosynthetic efficiency, make plants more robust and resistant to stress, and help them survive in drought, high temperature, pests and other adversity.
In the field of materials science, 7,8-dihydroxyflavone has also made a name for itself. Due to its special chemical structure and properties, it may be used to make new materials. For example, in the research and development of sensors, it may react with specific substances, and accurately detect targets through signal changes. It has potential application value in environmental monitoring, food safety testing, etc.
In conclusion, 7,8-dihydroxyflavone has shown considerable application prospects in many fields such as medicine, agriculture, and materials science due to its unique properties. It is indeed a compound of great research and development value.