Non-ionic Photoacid Generators for i-Line: Synthesis, Photochemistry and Application to Photocrosslinking System

摘要

Non-ionic photoacid generators (PAGs) based on imino sulfonates and N-hydroxyimide sulfonates were designed and synthesized. To obtain the PAGs Which are sensitive to i-line (365 nm light), fluorenone oxime, thioxanthone oxime and N-hydroxyimide derivatives of thioxanthone were selected as a chromophore. The PAGs obtained were thermally stable and highly photosensitive. A mechanism for the photolysis of the PGAs was discussed. Some of the thioxanthone-based PAGs were also sensitive to g-line (436 nm light). Photocrosslinking of poly(glycidyl methacrylate) film was studied using the PAGs.