The vibrant and captivating displays that define our modern digital world are often powered by Organic Light-Emitting Diodes (OLEDs). At the heart of this technology lies a complex interplay of specialized organic molecules, each meticulously designed to perform specific functions. Tetra-(4-pyridylphenyl)ethylene, identified by its CAS number 1227195-24-5, is one such critical component that contributes significantly to the performance and efficiency of OLED devices. For chemists, material scientists, and procurement professionals, understanding its chemical essence is key.

Deciphering the Structure and Properties

Tetra-(4-pyridylphenyl)ethylene is an organic compound with the molecular formula C46H32N4 and a molecular weight of 640.77 g/mol. Its structure is characterized by a central ethene unit, which is tetra-substituted with phenyl rings, each bearing a pyridine group at the para position. This architecture results in an extended conjugated pi-electron system, which is fundamental to its optoelectronic properties. Typically supplied as an off-white powder with a high purity (minimum 97%), its solid form and stability are advantageous for processing in device fabrication.

The Chemical Function in OLED Layers

Within the multi-layered structure of an OLED, Tetra-(4-pyridylphenyl)ethylene can play several vital roles, leveraging its specific chemical and electronic characteristics:

  • Electron Transport Properties: The pyridine rings, with their electronegative nitrogen atoms, introduce electron-deficient centers into the molecule. This makes Tetra-(4-pyridylphenyl)ethylene an effective electron-transporting material. Efficient transport of electrons from the cathode to the emissive layer is crucial for balanced charge recombination, leading to higher luminescence efficiency and reduced operating voltage.
  • Hole Blocking Capabilities: The energy levels of the molecule can be tailored to create an energy barrier for holes, preventing them from migrating past the emissive layer. This confinement of charge carriers ensures that recombination occurs efficiently within the desired emissive zone, maximizing light output and preventing degradation of adjacent layers.
  • Host Material for Emitters: In some OLED architectures, this compound can serve as a host matrix for phosphorescent or fluorescent emitter molecules. The host material plays a critical role in energy transfer to the dopant and must possess suitable thermal and electrochemical stability to ensure long device lifetime.

The combination of good electron mobility, potential for hole blocking, and suitable energy levels makes Tetra-(4-pyridylphenyl)ethylene a versatile tool for OLED engineers aiming to optimize device performance. Its contribution to charge balance and confinement directly impacts brightness, power efficiency, and the operational lifespan of OLED displays.

Sourcing and Supply Chain Insights

For companies involved in the manufacturing of OLED panels or the research and development of new display materials, securing a reliable supply of high-quality Tetra-(4-pyridylphenyl)ethylene is essential. Leading chemical manufacturers, particularly those based in China, specialize in producing such advanced organic materials. When looking to purchase, buyers should seek out suppliers who can demonstrate:

  • Consistent High Purity: A minimum purity of 97% is a baseline, but stringent quality control ensures batch-to-batch consistency, which is critical for reproducible device performance.
  • Scalable Production: The ability to provide quantities ranging from research-scale grams to commercial-scale kilograms or tons is vital for supporting the entire product development lifecycle.
  • Competitive Pricing: Efficient manufacturing processes enable suppliers to offer cost-effective solutions, making advanced OLED technology more accessible.
  • Technical Documentation: Access to Certificates of Analysis (CoA), Material Safety Data Sheets (MSDS), and technical support further bolsters confidence in the supplier.

When searching for a supplier, using terms such as 'buy OLED material China,' 'CAS 1227195-24-5 manufacturer,' or 'high purity organic electronic chemicals' will help identify potential partners. We pride ourselves on being a leading supplier, offering the chemical expertise and reliable product supply needed to drive the future of display technology.

Conclusion

Tetra-(4-pyridylphenyl)ethylene (CAS 1227195-24-5) is a prime example of how precisely engineered organic molecules are transforming technological landscapes. Its chemical structure is meticulously designed to fulfill critical roles in OLED devices, contributing to the stunning visual experiences we enjoy today. By partnering with manufacturers who understand its chemistry and can deliver it with unwavering quality and consistency, the industry can continue to push the boundaries of what is possible in electronic displays.