Description

Bis(4-tert-Butylphenyl)Iodonium Perfluoro-1-Butanesulfonate is a high-purity photoacid generator (PAG) salt, a critical component in advanced photoresist formulations. Its value lies in its exceptional thermal stability and high quantum yield for acid generation upon exposure to deep ultraviolet (DUV) or electron beam (e-beam) radiation. This compound is essential for manufacturers in the semiconductor and microelectronics industries, enabling the precise patterning required for next-generation integrated circuits and advanced packaging technologies.

Application

• Semiconductor Photolithography: A key photoacid generator in chemically amplified resists (CARs) for DUV (248nm, 193nm) and e-beam lithography processes.
• Advanced Packaging: Used in the fabrication of redistribution layers (RDLs) and through-silicon vias (TSVs) for 2.5D and 3D integrated circuit packaging.
• Microelectromechanical Systems (MEMS): Employed in high-resolution patterning for creating intricate mechanical and sensor structures on silicon wafers.
• Optical Component Fabrication: Utilized in the production of diffraction gratings, waveguides, and other micro-optical elements requiring precise etch profiles.
• Polymer Cross-linking & Curing: Acts as an efficient cationic initiator for the UV-induced cross-linking of epoxy and vinyl ether-based polymers in specialty coatings.
• Research & Development: Serves as a benchmark compound in academic and industrial R&D for developing new photoresist chemistries and lithographic techniques.

Basic Information

Product Name	Bis(4-tert-Butylphenyl)Iodonium Perfluoro-1-Butanesulfonate
CAS No.	194999-85-4
Molecular Formula	C₂₀H₂₄I•C₄F₉O₃S
Molecular Weight	770.35 g/mol
Synonyms	Bis(4-tert-butylphenyl)iodonium nonafluoro-1-butanesulfonate; (4-tert-Butylphenyl)phenyliodonium perfluorobutanesulfonate; Iodonium, bis(4-(1,1-dimethylethyl)phenyl)-, 1,1,2,2,3,3,4,4,4-nonafluoro-1-butanesulfonate; Photoacid Generator PAG; Iodonium PAG; DTBPI-PFBS; Bis(4-tert-butylphenyl)iodonium perfluorobutylsulfonate
EINECS	Contact for details

Quality Control

Our Bis(4-tert-Butylphenyl)Iodonium Perfluoro-1-Butanesulfonate is manufactured under strict quality management systems to ensure batch-to-batch consistency and high performance in sensitive lithographic applications. Each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing purity, identity, and critical impurity profiles. We adhere to industry-standard analytical protocols to guarantee compliance with the stringent requirements of semiconductor material suppliers.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and must be handled in a dry environment or under inert atmosphere to prevent decomposition. Keep away from strong bases and reducing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Heavy Metals	≤ 10 ppm
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.