Imaging Science and Photochemistry ›› 2007, Vol. 25 ›› Issue (3): 198-203.DOI: 10.7517/j.issn.1674-0475.2007.03.198

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Synthesis and Characterization of the Non-Ionic Photoacid Generator-Phthalimidotosylate

LI Ping, WANG Xia, LIU Jian-guo, LI Ping   

  1. Department of Chemistry, Huazhong University of Science and Technology, Wuhan 430074, Hubei, P. R. China
  • Received:2006-10-10 Revised:2007-01-05 Online:2007-05-23 Published:2007-05-23

Abstract: Phthalimidotosylate (PIT) was synthesized from ophthalic anhydride,hydroxylamine hydrochloride and p-toluenesulfonyl chloride. It was characterized with FTIR and 1H NMR.Experiments showed that PIT has good transparence in 248 nm wavelength (absorbance=0.375) and good solubility in organic solvents.So it is a good potential photoacid generator (PAG) in the deep-UV 248 nm photoresist system.

Key words: photoacid generator, photoresist, phthalimidotosylate

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