Photoinitiators
Photoinitiator PAG-023
(4-Fluorophenyl)diphenylsulfonium triflate
Triflate photoacid generator for chemically amplified resists and high-acidity cure.
Product Description
PAG-023 is a diaryl(4-fluorophenyl)sulfonium trifluoromethanesulfonate. The triflate anion ranks among the strongest acids liberatable by UV exposure, making PAG-023 the generator of choice for chemically amplified resists, deprotection imaging chemistries and demanding cationic formulations.
Its non-nucleophilic acid does not terminate growing cationic chains, supporting clean polymer architecture in precision imaging and microelectronics. Typical use: 0.5–2 wt% depending on acid demand.
Key Features
- Triflate anion — top-tier acid strength
- Non-nucleophilic acid for clean cationic polymerization
- Suited to chemically amplified resist chemistry
- White, thermally stable powder
Applications
- Chemically amplified photoresists
- Microelectronics imaging
- Cationic epoxy and vinyl ether cure
- Deprotection imaging chemistries
- Precision optical adhesives
Specifications
| CAS No. | — |
|---|---|
| Molecular Formula | C19H14F4O3S2 |
| Molecular Weight | 430.44 |
| Appearance | White to off-white powder |
| Assay (HPLC) | ≥ 98.0% |
| Loss on Drying | ≤ 0.5% |
Packaging & Storage
1 kg / 5 kg aluminum-foil bottles, 25 kg fiber drum. Store cool, dry and protected from light; shelf life 24 months.
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