For procurement managers and R&D scientists in the electronic materials sector, sourcing high-quality intermediates like 9-(2-Bromophenyl)-9H-carbazole (CAS: 902518-11-0) is critical. This compound is a key building block for advanced Organic Light-Emitting Diode (OLED) materials, contributing significantly to device performance. This guide aims to assist you in understanding what to look for when you purchase this vital chemical and how to identify a trustworthy supplier.

Key Specifications to Consider When Buying

When you intend to buy 9-(2-Bromophenyl)-9H-carbazole, several specifications are paramount to ensure it meets your application requirements:

  • Purity: This is arguably the most crucial factor. For OLED applications, a purity of ≥99.0% is typically required. Higher purities (e.g., ≥99.5% or ≥99.9%) may be necessary for more demanding applications, impacting device efficiency and lifespan. Always verify the analytical methods used for purity assessment.
  • Appearance: The standard appearance is described as a white to almost white powder. Any significant deviation might indicate contamination or degradation.
  • CAS Number: The CAS number 902518-11-0 is the unique identifier for this chemical. Ensure this matches your requirements.
  • Molecular Formula and Weight: C18H12BrN (MW: 322.19900) confirms the chemical identity.
  • Storage Conditions: Understanding recommended storage, usually in a cool, dry, and well-ventilated place, is important for maintaining product integrity after purchase.

Applications and Benefits in OLEDs

9-(2-Bromophenyl)-9H-carbazole serves as a vital intermediate in the synthesis of various functional materials used in OLED devices. Its structure allows for efficient coupling reactions to create larger, more complex molecules that function as:

  • Hole Transport Layers (HTLs): The carbazole core provides excellent hole mobility, facilitating efficient charge injection and transport.
  • Emitting Layer Hosts: It acts as a precursor for host materials that efficiently transfer energy to light-emitting dopants, crucial for phosphorescent OLEDs (PHOLEDs).
  • Electron Blocking Layers: Certain derivatives can also function in electron-blocking roles, optimizing charge recombination within the OLED structure.

The use of high-purity intermediates directly translates to improved device performance, including enhanced brightness, better color saturation, extended operational lifetime, and increased energy efficiency. Therefore, prioritizing quality when you purchase this material is a sound investment.

Finding a Reliable Manufacturer and Supplier

When looking to purchase 9-(2-Bromophenyl)-9H-carbazole, especially in bulk, identifying a reliable manufacturer and supplier is key. Consider the following:

  • Manufacturer Reputation: Look for manufacturers with a proven track record in producing electronic-grade chemicals and OLED intermediates. Companies with ISO certifications often demonstrate a commitment to quality.
  • Supplier Transparency: A good supplier will readily provide Certificates of Analysis (CoA) detailing purity, impurity profiles, and analytical methods. They should also be transparent about their production processes and quality control measures.
  • Customer Service and Support: Responsive customer service is crucial. A supplier that can answer your technical questions and provide timely updates on pricing and availability is invaluable. For example, inquiring about the price for larger quantities can often lead to better deals.
  • Location: Sourcing from manufacturers in established chemical production hubs like China can offer advantages in terms of cost and scalability. Companies specializing in fine chemicals and OLED materials are particularly good targets.

By carefully evaluating these factors, procurement professionals can confidently buy 9-(2-Bromophenyl)-9H-carbazole, securing a critical component that drives innovation in the dynamic field of organic electronics. Prioritizing a reputable manufacturer and supplier ensures you receive a high-quality product that meets the demanding standards of OLED technology.