Chemistry Letters, Vol.41, No.6, 625-627, 2012
Synthesis and Properties of Novel i- and g-Line Sensitive Photoacid Generators Based on 9-Fluorenone Derivatives with Aryl-Ethynyl Units
Imino sulfonate photoacid generators (PAGs) sensitive to i- and g-line were synthesized using 9-fluorenone derivatives with aryl-ethynyl units as starting materials. The PAGs exhibited good thermal stability and photoreactivity at 365 (i-line) and 436 nm (g-line) compared with that of an imino sulfonate PAG synthesized from unfunctionalized 9-fluorenone.