GSアライアンス List of Products and Services

"Perovskite-type quantum dots" are products that have crystallized perovskite-type compounds into nanocrystals. In display applications, quantum dots such as CdSe/ZnS and InP/ZnS are gradually being commercialized, but the strong toxicity of Cd and the rarity of In are problematic. Additionally, the synthesis of InP/ZnS requires an environment that completely blocks O2 and H2O, and issues regarding the chemical stability and durability of InP remain. From this perspective, we developed our "perovskite-type quantum dots." They have adjustable emission wavelengths and a narrow emission spectrum (full width at half maximum), which gives them great potential in areas such as displays, lasers, LEDs, solar cells, and medical biomarkers. [Features] ■ Quantum yield is approximately 50-90% ■ Emission wavelength is adjustable ■ Emission spectrum (full width at half maximum) is narrow at 18nm-39nm *For more details, please refer to the PDF document or feel free to contact us. *If you would like paid samples, please inquire.

"Silicon quantum dots" are products that have established a commercially viable production process at relatively low cost. They are non-toxic and environmentally friendly, with applications ranging from silicon-based solar cells to medical applications such as bioimaging, photonic materials, and quantum dot computers. They have the potential to enable the creation of lightweight, thin, and flexible silicon-based semiconductor devices and functional devices like displays through printing methods. [Features] - Sizes ranging from a few angstroms to several nanometers - Quantum yield of 20-30% (considering further improvements in quantum yield) - Water-based (organic solvent-based silicon quantum dots are under consideration) - Simultaneous emission of visible and infrared light - Non-toxic and environmentally friendly quantum dots (silicon-based) *For more details, please refer to the PDF document or feel free to contact us. *If you would like paid samples, please inquire.

"Graphene quantum dots" are quantum dots that emit light in the near-infrared to visible and ultraviolet light regions, with sizes ranging from a few to several tens of nanometers. They are non-toxic and can be utilized in various applications such as bioimaging (imaging of cancer cells, antigen-antibody reactions, protein analysis, cell tracking), infrared sensors, and solar cells. 【Features】 ■ Emits light (fluorescence) in the near-infrared to visible and ultraviolet light regions ■ Size ranges from a few to several tens of nanometers ■ Quantum yield: 50-80% ■ Upconversion phenomenon (two-photon absorption: converting long-wavelength light to short-wavelength light) ■ Aqueous system (organic solvent system under consideration) ■ Non-toxic quantum dots (carbon-based materials) *For more details, please refer to the PDF document or feel free to contact us. *If you would like a paid sample, please inquire.

"Quantum dots" refer to nanoscale semiconductor crystals that possess unique optical properties governed by quantum chemistry and quantum mechanics. It is possible to adjust the bandgap based on the size of the colloidal nanocrystals, resulting in characteristic luminescent properties that depend on particle size. Not only can the emission wavelength be tuned and the spectral half-width be narrow, but they also exhibit high quantum efficiency and the ability to absorb a wide range of wavelengths. Since they can be dispersed in solutions (water and various organic solvents), low-cost printing and coating techniques can be employed. In addition to the bright and vivid coloration of quantum dots, they can emit light across a broad range of wavelengths, and they are characterized by high efficiency, long lifetimes, and high attenuation coefficients, leading to active research and development for various applications. [Applications] ■ Biological imaging ■ Lighting, displays ■ Solar cells ■ Security tags ■ Quantum dot lasers ■ Photonic materials ■ Transistors ■ Thermoelectric materials ■ Quantum computers etc. *Please contact us if you would like to request paid samples.

"Metal-organic frameworks and porous coordination polymers" are porous materials obtained through the self-assembly of metal ions and organic ligands. By bridging the metal ions, which serve as nodal points, with organic ligands, a framework structure is constructed, and the voids within this framework act as spaces for molecular incorporation, resulting in a very large surface area. Porous materials have been a factor hindering the research and development of highly functional and multifunctional porous materials that coexist with multiple pore functions. In this regard, metal-organic frameworks have made it possible to construct very complex structures and exhibit higher-order functions by precisely incorporating coordination bonds into molecular design, regardless of infinite or finite (crystalline or solution) structures. [Features] ■ Porous materials obtained through the self-assembly of metal ions and organic ligands ■ Voids within the framework act as spaces for molecular incorporation ■ Not limited to infinite or finite (crystalline or solution) structures ■ Capable of constructing very complex structures and exhibiting higher-order functions ■ A wide range of applications is expected, including gas storage, selective storage of molecules and ions, electrolytes, and sensors *If you would like a paid sample, please contact us.

Our company has developed metal nanocolloids (silver, gold, platinum) in the FUJI SP Ag, Au, Pt series by utilizing our long-standing expertise in the synthesis of organic and inorganic materials, as well as our manufacturing technology for fine particle dispersions in both powder and wet forms, cultivated through years of experience with organic pigments and functional materials. "Metal nanocolloids" exhibit properties that differ from bulk metals in terms of optical, electronic, magnetic, and catalytic characteristics. Additionally, we are introducing "silver nanocolloids," which have significantly enhanced charge properties and high antibacterial effects, as well as "gold nanocolloids" and "platinum nanocolloids." 【Product Lineup】 ■ Metal Nanocolloids ■ Silver Nanocolloids ■ Gold Nanocolloids ■ Platinum Nanocolloids *For more details, please refer to the PDF document or feel free to contact us. *If you would like paid samples, please inquire.

"Silver nanowires" are an ideal alternative to ITO films due to their very high transparency, conductivity, flexibility, stretchability, and significantly lower cost compared to ITO films. They have various technical applications, including touch panels (especially large touch panels), organic LEDs, organic solar cells, various types of solar cells, compound semiconductors, and other fields. The solvent is primarily water, but it can be replaced with various organic solvents upon request. If you have further requests regarding particle size control or adhesion as a coating material, please feel free to consult us. 【Specifications】 ■ Solvent: Water, alcohol, ethylene glycol, etc. ■ Concentration: 0.05 - 2.0% ■ Appearance: Gray suspension ■ Wire width: 60 - 150 nm ■ Wire length: 5 - 30 μm *For more details, please refer to the PDF document or feel free to contact us. *If you would like a paid sample, please inquire.

Our company handles materials that combine graphene quantum dots with silica-based inorganic materials. Compared to standalone graphene quantum dots, both light resistance and heat resistance have been improved. This has allowed us to enhance the significant weaknesses of quantum dots in terms of light resistance and heat resistance. In the future, we may also consider the combination of quantum dots other than graphene quantum dots with inorganic materials. *For more details, please refer to the PDF document or feel free to contact us. *If you would like a paid sample, please inquire.

We offer "quantum dot ink" for pens and stamps, which is a water-based ink based on graphene quantum dots. We also produce "quantum dot inkjet ink," which can be printed using general-purpose office printers. We are currently considering inks using other organic solvents and quantum dots. 【Features】 ■ Water-based ink based on graphene quantum dots ■ Production of quantum dot inkjet ink ■ Printable with general-purpose office printers *For more details, please refer to the PDF materials or feel free to contact us. *If you would like a paid sample, please contact us.

We would like to introduce the quantum dot + UV resin composite material developed by our company. This product is a material that combines quantum dots with UV (ultraviolet) curing resin. Since it is a UV curing resin, it can be shaped into various forms using molds. By changing the type of quantum dots, it is also possible to produce light emission colors of various wavelengths. We plan to improve water resistance, weather resistance, and heat resistance as well. 【Features】 ■ Since it is a UV curing resin, it can be shaped into various forms using molds. ■ By changing the type of quantum dots, it is also possible to produce light emission colors of various wavelengths. *For more details, please refer to the PDF document or feel free to contact us.

We handle materials that combine perovskite-type quantum dots with polyethylene resin. The quantum yield is approximately just over 10%, and we are considering further improvements in quantum yield, including this quantum dot film, sheet, and pellets. If the quantum yield improves further, there is potential for application as quantum dot sheets for quantum dot displays. 【Features】 ■ Materials that combine quantum dots and resin ■ Molding composite pellets to produce films and sheets ■ Quantum yield is approximately just over 10% *For more details, please refer to the PDF document or feel free to contact us. *If you would like a paid sample, please inquire.

"CIS (CuInS2)/ZnS quantum dots" are water-based quantum dots that exhibit luminescence from green to red. Organic solvent-based "CIS (CuInS2)/ZnS quantum dots" are also available for consideration. We also offer powders, and the emission wavelength can be adjusted to some extent. Please feel free to consult us for any inquiries, including technical details. 【Features】 ■ Water-based quantum dots ■ Organic solvent-based options available ■ Powders also available ■ Emission wavelength can be adjusted to some extent *For more details, please refer to the PDF document or feel free to contact us.

The product is a quantum dot that primarily exhibits absorption and fluorescence in the infrared region. Unlike other quantum dots, its activity is mainly in the infrared, so it is being researched and developed as a material that can be applied in infrared sensors and quantum dot solar cells. The quantum yield is approximately 15-30%, but we aim for further improvement in the future. 【Excitation Wavelength】 ＜Quantum Yield＞ ■420 nm: 13.6% ■540 nm: 12.5% ■700 nm: 11.1% *For more details, please refer to the PDF document or feel free to contact us.

"Deep eutectic solvents" are a new type of solvent that possesses performance similar to ionic liquids. They are systems formed from eutectic mixtures of Lewis acids or Brønsted acids and bases, consisting of various anionic or cationic species. By synthesizing using two or more compounds, it is possible to obtain a eutectic with a melting point lower than that of any individual component, and a significant advantage is that they are generally cheaper than ionic liquids. Additionally, deep eutectic solvents made from natural components are specifically referred to as "natural deep eutectic solvents," making them more environmentally friendly. [Applications (partial)] ■ Electrolytes for batteries ■ Extraction of various plant-derived substances such as catechins, flavonoids, anthraquinones, and alkaloids ■ Solvents for organic synthesis ■ Extraction and precipitation of various metals such as rare earths and rare metals *For more details, please refer to the PDF document or feel free to contact us.

The "GS IL Inorg. Series" is an inorganic material composite ionic liquid that suppresses bleed-out to the surface even after maintaining transparency under high humidity and after water treatment. For example, when mixed with UV-curable resin, bleed-out does not occur, allowing for the maintenance of conductivity. The advantage of being transparent makes it increasingly used as an antistatic agent, particularly for anti-reflective films, anti-glare films, rolls for office automation equipment, adhesives for semiconductors, polarizers, and protective films. 【Features】 ■ Maintains transparency ■ Suppresses bleed-out to the surface even under high humidity and after water treatment ■ No bleed-out occurs when mixed with UV-curable resin ■ Frequently used as an antistatic agent for anti-reflective films, rolls for office automation equipment, adhesives for semiconductors, polarizers, etc. *For more details, please refer to the PDF document or feel free to contact us.

"GS anti-Static IL" is a phosphonium-based ionic liquid. It can be added to various polymers, resins, and plastic materials to impart conductivity, making it suitable for use as an antistatic agent. Additionally, it has excellent transparency, making it suitable for various optical applications, electronic components, displays, and semiconductors. 【Features】 - Can be added to various polymers, resins, and plastic materials to impart conductivity - Non-flammable, non-volatile, and stable against high temperatures - Excellent transparency - Suitable for various optical applications, electronic components, displays, and semiconductors - Excellent water resistance and durability *For more details, please refer to the PDF document or feel free to contact us.

"PLA/Hydroxyapatite composite materials" are materials that have the potential to be applied as artificial bones and bone fillers. Using a 3D printer, it is possible to create arbitrary three-dimensional shapes, enabling the fabrication of complex shapes of artificial bones tailored to each patient, which is expected to be developed as a material for 3D printers for custom-made medical applications. The PDF document below includes photos of the shapes of toy bones printed with a 3D printer, as well as the shapes of screws that could potentially be used for bone fixation. Please feel free to download and take a look. [Features] ■ Printable with a 3D printer ■ Applicable as scaffold materials for artificial bones and regenerative medicine *For more details, please refer to the PDF document or feel free to contact us.