8-Quinolineboronic acid

Catsyn offer gram to tons of 8-Quinolineboronic acid | CAS 86-58-8, its formula is C9H8BNO2, molecular weight is 172.98g/mol and the purity is usually >98%.

Compounds with CAS number 86-58-8, used as OLED materials, typically possess highly conjugated aromatic molecular structures, possibly containing core frameworks such as carbazole, fluorene, or triarylamines. Electron-withdrawing or electron-donating groups are covalently linked to regulate electron transport performance. These materials exhibit good thermal stability in the solid state (decomposition temperature is typically above 300℃) and a moderate glass transition temperature (Tg) to ensure thin-film processability. Their electronic effects manifest as strong electron-donating ability or adjustable electron affinity. The energy level difference between the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) is small (approximately 2.5-3.5 eV), which is beneficial for carrier injection and transport. The conjugated system enhances intermolecular orbital overlap through π-π stacking, increasing hole mobility (up to the order of 10⁻³ cm²/V·s). Simultaneously, some structures optimize electron transport balance by introducing electron-withdrawing groups such as fluorine or cyano groups. In terms of stability, its chemical inertness stems from the delocalized π bonds of the aromatic ring and possible steric hindrance, which can inhibit oxidative degradation. Catalytic activity is typically low, but specific functionalized structures may form phosphorescent complexes through coordination with metal ions (such as Ir³⁺ and Pt²⁺), significantly improving triplet exciton utilization. Coordination performance depends on side-chain functional groups; for example, pyridine and carbonyl groups can form stable coordination bonds with metals, used to construct the emissive layer or charge transport layer. The core applications of this material in the OLED field are concentrated in the emissive layer and charge transport layer, where it can achieve high-efficiency electroluminescence as a host material or dopant. Its functional roles include: optimizing photoluminescence quantum yield (PLQY) by controlling conjugation length and substituent type, with some phosphorescent complexes achieving nearly 100% internal quantum efficiency; as a hole transport material, its high HOMO level (approximately -5.0 to -5.5 eV) and low ionization potential match the anode work function, reducing the hole injection barrier; in the electron transport layer, its low LUMO level (approximately -2.8 to -3.2 eV) forms an ohmic contact with the cathode, improving electron injection efficiency. Its industry value lies in its key impact on OLED device performance: flexible displays using this material can achieve high color purity (NTSC color gamut coverage exceeding 100%), low driving voltage (<4 V), and long lifetime (LT95>10,000 h), meeting the demands of high resolution and low power consumption in consumer electronics, automotive displays, and lighting. Furthermore, its solution-processable properties (such as spin coating and inkjet printing) are compatible with large-area manufacturing processes, significantly reducing production costs and driving OLED technology towards cutting-edge directions such as foldable and transparent displays.