At NINGBO INNO PHARMCHEM CO.,LTD., we believe that a deep understanding of chemical structures and properties is fundamental to unlocking the full potential of advanced materials. This article focuses on PDI2OD-Br2, a dibromo perylene diimide derivative (CAS No. 1100243-37-5), and explores the chemistry that makes it such a vital component in modern optoelectronics.

PDI2OD-Br2 belongs to the perylene diimide (PDI) family, a class of organic molecules renowned for their excellent thermal stability, strong optical absorption, and efficient electron transport characteristics. The core structure of PDI is a planar, fused aromatic system consisting of a naphthalene core fused with two imide groups. This highly conjugated system is responsible for its characteristic electronic and optical properties. In PDI2OD-Br2, the perylene core is further functionalized with bromine atoms and bulky alkyl chains (2-octyldodecyl). The presence of bromine atoms can influence the molecular packing in the solid state and alter the electronic energy levels, often leading to improved electron mobility and stability. The long, branched alkyl chains enhance solubility in common organic solvents, which is crucial for solution-based processing techniques used in the fabrication of devices like OLEDs and OFETs.

The molecular formula of PDI2OD-Br2 is C64H88Br2N2O4, and its molecular weight is approximately 1109.2 g/mol. The high purity of this material, typically exceeding 97%, is essential for achieving reproducible and high-performance optoelectronic devices. Impurities can act as charge traps or quenching sites, significantly degrading device efficiency and lifetime. NINGBO INNO PHARMCHEM CO.,LTD. ensures the stringent quality control necessary to provide researchers and manufacturers with a reliable supply of this high-performance organic semiconductor.

The specific arrangement of atoms and functional groups in PDI2OD-Br2 dictates its behavior in electronic devices. Its strong electron-accepting nature makes it an excellent n-type material, suitable for electron transport layers or as an acceptor in bulk heterojunction solar cells. The molecular design also influences its absorption and emission spectra, which can be tailored for specific applications. Understanding this chemistry allows us to appreciate why PDI2OD-Br2 is a key component in the advancement of organic thin-film transistors, organic light-emitting diodes, and organic photovoltaics.