In the rapidly evolving field of organic electronics, the development of high-performance materials is paramount. NINGBO INNO PHARMCHEM CO.,LTD. is at the forefront, offering 6,6'-Dibromo-1,1'-di(n-octyl)isoindigo, a crucial chemical compound that serves as a foundational building block for cutting-edge organic photovoltaic (OPV) devices and organic field-effect transistors (OFETs). Its unique chemical structure and exceptional electronic properties make it indispensable for researchers and manufacturers striving to push the boundaries of flexible and transparent electronics.

This remarkable compound, identified by CAS No. 1334295-79-2 (also known as 1514807-49-8, or IID8-2Br, among other synonyms like 6,6'-Dibromo-1,1'-dioctyl-[3,3'-biindolinylidene]-2,2'-dione), boasts a precise molecular formula of C32H40Br2N2O2 and a molecular weight of 644.49. Physically, it presents as an orange to dark red crystalline powder or crystal, a visual indicator of its conjugated system. The presence of bromine atoms at the 6 and 6' positions significantly enhances its electron-withdrawing capabilities, while the n-octyl chains at the 1 and 1' positions are strategically incorporated to boost its solubility in common organic solvents. This crucial feature greatly facilitates its processing in solution-based fabrication techniques, such as spin-coating and inkjet printing, which are vital for scalable and cost-effective production of organic electronic devices. Its melting point ranges from 139°C to 143°C, underscoring its thermal stability during processing.

The synthesis of 6,6'-Dibromo-1,1'-di(n-octyl)isoindigo involves a meticulously controlled multi-step protocol, typically originating from brominated indoline precursors. This process often includes condensation reactions followed by precise alkylation to introduce the n-octyl side chains. NINGBO INNO PHARMCHEM CO.,LTD. adheres to the most stringent quality control standards throughout its manufacturing process, ensuring that every batch of 6,6'-Dibromo-1,1'-di(n-octyl)isoindigo consistently achieves high purity, typically exceeding 98.0% (HPLC). This commitment to purity is fundamental for achieving optimal performance and reproducibility in sensitive organic electronic applications, minimizing unwanted side reactions or impurities that could compromise device efficiency.

From an electronic perspective, 6,6'-Dibromo-1,1'-di(n-octyl)isoindigo exhibits a remarkably low bandgap, approximately 1.5–1.7 eV, a characteristic crucial for efficient light absorption in photovoltaics. Furthermore, its strong electron-accepting behavior is highlighted by a lowest unoccupied molecular orbital (LUMO) energy level of around −3.8 eV. These electronic properties make it an ideal acceptor or monomer for conjugation with donor polymers, forming efficient bulk heterojunction systems in solar cells. In addition to its electronic benefits, the compound's enhanced solubility, attributed to its n-octyl chains, simplifies solution processing, enabling its seamless integration into various device architectures without requiring complex solvent systems or high-temperature processing.

The applications of 6,6'-Dibromo-1,1'-di(n-octyl)isoindigo are broad and impactful within the organic electronics sphere. In Organic Photovoltaics (OPVs), it serves as a critical monomer in the synthesis of donor-acceptor copolymers, such as poly(isoindigo-alt-benzothiadiazole) (PIIG-BT). Polymers derived from this compound have demonstrated impressive power conversion efficiencies (PCEs) of up to 6.2% and open-circuit voltages (VOC) of 0.78 V, showcasing its potential for high-performance solar energy conversion. The bromine atoms on its structure also play a pivotal role, facilitating precise polymer backbone architecture through common cross-coupling reactions like Suzuki-Miyaura. Beyond solar cells, its derivatives are highly sought after for Organic Field-Effect Transistors (OFETs), where they exhibit notable electron mobilities, reaching up to 0.22 cm²·V⁻¹·s⁻¹ in certain poly(isoindigo-alt-bithiophene) systems. The n-octyl chains contribute by reducing crystallite defects, thereby enhancing charge transport and overall device stability.

As a dedicated manufacturer and trusted supplier of advanced chemical intermediates, NINGBO INNO PHARMCHEM CO.,LTD. is committed to supporting global research and development efforts. We offer 6,6'-Dibromo-1,1'-di(n-octyl)isoindigo in various quantities, from laboratory-scale samples to bulk production, ensuring reliable availability for your projects. We maintain a substantial inventory to meet immediate demands, and our competitive price structure makes high-quality materials accessible. For those looking to buy or purchase this essential compound, our streamlined ordering process and efficient logistics ensure prompt delivery worldwide. We invite you to contact us for more information, including detailed specifications, pricing, and opportunities for bulk purchase. Partner with NINGBO INNO PHARMCHEM CO.,LTD. to accelerate your innovations in organic electronic materials.