The advancement of materials science critically depends on access to specialized chemical intermediates with well-defined properties. 4,4''-Dibromo-p-terphenyl (CAS 17788-94-2) is one such compound, prized for its unique structural characteristics and chemical reactivity. This article aims to provide researchers and industry professionals with a clear understanding of its physical and chemical properties, alongside its significant applications, and guide them on where to buy this essential material.

Physically, 4,4''-Dibromo-p-terphenyl is typically supplied as a white to off-white solid, often in crystalline powder form. Its molecular formula is C18H12Br2, with a molecular weight of 388.1. Key physical properties include a melting point around 315 °C, indicating considerable thermal stability, which is a valuable attribute for high-temperature processing or applications. The density is approximately 1.537 g/cm³, a typical characteristic for brominated aromatic compounds.

Chemically, the compound is a terphenyl derivative featuring two bromine atoms at the para positions of the outer rings. This molecular architecture is highly amenable to a variety of organic transformations. The C-Br bonds are reactive sites for nucleophilic substitution or, more importantly, for palladium-catalyzed cross-coupling reactions. These reactions are fundamental in constructing extended π-conjugated systems, which are the basis for many advanced materials.

The primary applications of 4,4''-Dibromo-p-terphenyl are concentrated in the field of electronics and materials science. It serves as a crucial precursor in the synthesis of organic semiconductors and emissive materials for OLED displays. Its incorporation into molecular designs helps tailor the electronic band structure and charge transport properties necessary for efficient light emission. Furthermore, it's utilized in the development of liquid crystalline materials, where its rigid, elongated structure contributes to desirable mesophases. Researchers also employ it in creating specialty polymers with enhanced thermal and mechanical resistance.

For those looking to purchase 4,4''-Dibromo-p-terphenyl, numerous suppliers worldwide offer this chemical. A significant number of these reputable manufacturers and suppliers are located in China, providing high-purity grades (e.g., 99% min) at competitive prices. When making a purchase, ensure you review the product specifications, including purity levels and analytical data, to confirm it meets your specific project requirements. Engaging with manufacturers directly can often lead to better pricing and supply chain reliability.