For Research & Development scientists working at the forefront of organic electronics, understanding the precise technical specifications of materials is fundamental to successful innovation. Bis(N-ethylpropyl)PBI, a key organic semiconductor, is integral to the advancement of OLED, OFET, and OPV technologies. Its efficacy in these applications is directly tied to its chemical structure, purity, and optical characteristics. This guide provides an in-depth look at the technical specifications of Bis(N-ethylpropyl)PBI, empowering scientists to make informed decisions when purchasing this crucial material.

Bis(N-ethylpropyl)PBI, identified by its CAS number 110590-81-3, is a complex organic molecule with the molecular formula C34H30N2O4. This formula indicates a substantial molecular weight of approximately 530.61 g/mol, signifying a relatively large and complex organic structure. The molecule is characterized by its PBI (perylene diimide) core functionalized with ethylpropyl side chains, which are designed to improve solubility and film-forming properties, critical for solution-processed devices.

A cornerstone specification for Bis(N-ethylpropyl)PBI is its purity. Typically supplied at a minimum of 97%, this high purity level is essential for ensuring optimal electronic performance. Impurities, even in trace amounts, can act as charge traps or quenching sites, degrading the efficiency and stability of the final electronic device. R&D scientists must therefore prioritize sourcing materials that consistently meet or exceed this purity threshold. Manufacturers often provide a Certificate of Analysis (CoA) detailing the specific purity and the analytical methods used for its determination.

The appearance of Bis(N-ethylpropyl)PBI is another important characteristic. It is commonly described as a powder or crystalline solid, presenting in a range of very dark colors including very dark red, very dark brown, and black. This deep coloration is indicative of its conjugated pi-electron system, which is responsible for its optoelectronic activity. Understanding the physical form and color is important for handling, formulation, and integration into device architectures.

Spectroscopic data is also critical for characterizing and validating the material. The provided absorption maxima at 524 nm, 488 nm, and 457 nm in dichloromethane are key indicators of its electronic transitions and suitability for specific optical applications. These spectra can be used for quality control and for predicting how the material will interact with light in an OLED or OPV device. While melting point (MP) is listed as >450℃, other physical data like boiling point (BP) and density are often not applicable or not readily available for such complex organic solids.

For scientists looking to purchase Bis(N-ethylpropyl)PBI, engaging with reliable manufacturers in China, such as NINGBO INNO PHARMCHEM CO.,LTD., is highly recommended. They offer these advanced materials with verified specifications, competitive pricing, and the ability to buy in research quantities or bulk. Requesting samples and obtaining quotes are standard procedures to ensure the material meets your specific research needs and to manage project budgets effectively.

In summary, a thorough understanding of Bis(N-ethylpropyl)PBI’s technical specifications – its chemical formula, molecular weight, high purity, characteristic appearance, and spectral properties – is vital for R&D scientists. By prioritizing quality and sourcing from reputable suppliers, researchers can confidently integrate this material into their groundbreaking work in OLED, OFET, and OPV technologies.