(4-Cyclohexylphenyl)diphenylsulfonium nonafluorobutanesulfonate
(4-Cyclohexylphenyl)diphenylsulfonium nonafluorobutanesulfonate, identified by CAS number 425670-64-0, is a high-performance ionic photoacid generator (PAG) belonging to the triarylsulfonium salt family. This compound features a bulky cyclohexyl substituent on one of the phenyl rings, which enhances its solubility in common organic solvents and improves its compatibility with various polymer matrices. The nonafluorobutanesulfonate (nonaflate) anion provides excellent thermal stability and a controlled acid diffusion rate, making it a critical component in advanced lithographic processes.
As a chemical raw material, this sulfonium salt is characterized by its ability to undergo photolysis upon exposure to specific wavelengths of light, typically in the deep ultraviolet (DUV) range. This process releases a strong perfluorinated sulfonic acid, which then catalyzes chemical transformations within a resin system. Due to its robust chemical structure, the material exhibits low volatility and high sensitivity, ensuring precise pattern transfer and minimal outgassing during industrial processing.
• In the semiconductor industry, this compound serves as a vital photoacid generator in the formulation of chemically amplified resists (CARs). It is specifically designed for use in deep ultraviolet (DUV) lithography, including 193 nm and 248 nm processes, where it enables the creation of high-aspect-ratio microstructures by initiating the deprotection of polymer chains upon light exposure.
• The material is highly valued in the production of advanced electronic components and integrated circuits. Its nonaflate anion ensures a balanced acid strength and limited diffusion, which is essential for maintaining high resolution and reducing line-edge roughness (LER) in sub-micron patterning. This precision is crucial for the fabrication of modern microprocessors and memory devices.
• Beyond traditional lithography, CAS 425670-64-0 is employed in the development of specialized coatings and thin films that require photo-initiated curing or cross-linking. Its excellent solubility allows for easy incorporation into various resin systems, including epoxies and acrylates, providing a reliable mechanism for spatially controlled chemical modification in micro-electromechanical systems (MEMS).
• It also finds application in academic and industrial research focusing on polymer science and materials engineering. Researchers utilize this sulfonium salt to investigate the kinetics of photo-induced acid generation and to develop novel functional materials that respond to light stimuli, facilitating advancements in areas such as 3D micro-printing and optical data storage.
Product Name: (4-Cyclohexylphenyl)diphenylsulfonium nonafluorobutanesulfonate
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