Alfa Chemistry Introduced Quantum Dot Products

Alfa Chemistry announced its intention to introduce quantum dot products for expanding their production lines on 24 October, 2019.

New York, United States – October 29, 2019 /MarketersMedia/ —

To meet the growing needs of customers for quantum dots, Alfa Chemistry, a famous chemical company in New York, announced its intention to introduce quantum dot products for expanding their production lines on 24 October, 2019.

Quantum dots are tiny particles or nanocrystals of semiconductor materials having a diameter of 2-10 nm. Quantum dots are artificial nanostructures that can have many different properties depending on their size, material, shape and structure. The properties of quantum dots are intermediate between bulk semiconductors and discrete atoms or molecules.

When a quantum dot is illuminated by ultraviolet light, the electrons in the quantum dot can be excited to a higher energy state, which corresponds to the transition of the electron from the valence band to the conduction band. The excited electrons can fall back into the valence band and release their energy through the emission of light. The color of the light depends on the energy difference between the conduction band and the valence band. If electricity or light is applied to a quantum dot, the quantum dot will emit light at a specific frequency, and these frequencies can be precisely adjusted by changing the size, shape, and material of the quantum dot.

Applications of Quantum dots
1 The applications of quantum dots in biology
1.1 Cell labeling
The earliest use of quantum dots in biology is the real-time tracking and labeling of molecules and cells by quantum dot probes over an extended period of time. Although organic dyes have been used for cell labeling for decades, absorption curves of most dyes are narrow, and various filters are needed in an efficient multicolor labeling to properly excite and collect the fluorescence of a particular dye molecule. Compared to traditional dyes, quantum dots are more photostable, and the brightness of quantum dots is 10 to 20 times higher than conventional dyes. Compared to other optical probes, quantum dots are not easily degraded, which helps to effectively track cells over time.

1.2 Biosensing
Due to their unique physical and optical properties, colloidal quantum dots have been used to develop new biosensing methods. Attaching biomolecules to the surface of quantum dots can generate complex biological conjugates that combine biological specificity and function with the desired optical properties of quantum dots. Quantum dots are widely used to develop fluorescence and FRET-based biosensors for ultrasensitive detection of biomolecules such as acids, enzymes, sugars, antibodies and antigens.

1.3 In vivo imaging
In vivo imaging is very important for clinical diagnosis. Fluorescence is a widely used tool in the biological field, but many organic fluorescent dyes have a very short lifetime and are prone to photodegradation. Compared with traditional fluorescent dyes, quantum dots have the characteristics of high emission brightness, large molar extinction coefficient and broad absorption spectrum, so they can be used as substitutes for fluorescent dyes or fluorescent proteins.

1.4 Disease detection
Quantum dots can be used to detect various cancer markers in cells, including c-Abl, CA-125, p-glycoprotein, mortalin, cytokeratin, prostate-specific membrane antigens, and carcinoembryonic antigens. The transformation or metastasis of these markers is often associated with the development and progression of cancer. Other disease detection applications of quantum dots include intracellular viral monitoring, blood cell antigen typing, and cell markers monitoring.

2 The applications of quantum dots in optics
2.1 Solar cell
Quantum dot solar cells are third generation solar cells. Colloidal quantum dots (QDs) can be used in solar cells due to their bandgap tunability, solution processability, and excellent light absorption and emission characteristics. Compared to typical silicon photovoltaic cells, quantum dot photovoltaic products are less expensive to manufacture and more efficient. Quantum dot solar cells have shown great development prospects in solar energy conversion.

2.2 Photocatalysts
Semiconductor quantum dots have the advantages of low cost, easy preparation, strong ability to capture visible light, multi-exciton generation, easy adjustment of carriers, and abundant surface sites. They are one of the most promising materials for establishing efficient artificial photosynthetic systems, and have been widely used in photocatalytic hydrogen production and photocatalytic organic conversion.

2.3 Quantum dot displays
Today, the most widely known application of quantum dots may be television screens. The reason why quantum dots can be used in displays is that they emit light with a very specific gaussian distribution, making the displayed colors more accurate. Since quantum dots are both photoactive (photoluminescence) and electrically active (electroluminescence) and have unique physical properties, they will be the core of next-generation displays.

2.4 Quantum dot photodetectors
Quantum dot photodetectors (QDPs) can be obtained by solution treatment or post-processing on other integrated circuits. And the Solution-treated quantum dots can be easily integrated with virtually unlimited arrays of substrates, and such colloidal QDPs have potential applications in night surveillance, machine vision, industrial inspection, spectroscopy, and fluorescent biomedical imaging.

2.5 Light emitting diodes
Quantum dots can be used to improve the design of existing light emitting diodes such as “quantum dot light emitting diode” (quantum dot-LED or QLED) displays and “quantum dot white light emitting diode” (quantum dot-WLED) displays. Compared to organic light-emitting materials for organic light-emitting diodes (OLEDs), quantum dot-based materials have more pure colors, longer lifetime, lower manufacturing cost, and lower power consumption.

“In consideration of the increasing needs for quantum dots, we decide to provide varieties of quantum dots to enlarge our product lines.” Said Brenda Randy, the Marketing Manager of Alfa Chemistry. “And there are a variety of other nano and semiconductor products available on our website for customers to choose from.”

About Alfa Chemistry
Alfa Chemistry offers an extensive catalog of building blocks, reagents, catalysts, reference materials, and research chemicals in a wide range of applications. It also provides analytical services and laboratory services to the customers. Products listed on the website are either in stock or can be resynthesized within a reasonable time frame. In stock products can be shipped out within 3-5 business days upon receipt of customers’ purchase order.

Contact Info:
Name: Tylor Keller
Email: Send Email
Organization: Alfa Chemistry
Address: 2200 Smithtown Avenue, Room 1 Ronkonkoma, NY 11779-7329 USA
Website: https://www.alfa-chemistry.com

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