Imaging Science and Photochemistry ›› 1999, Vol. 17 ›› Issue (3): 226-231.DOI: 10.7517/j.issn.1674-0475.1999.03.226

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THE PHOTOCHEMICAL PROPERTIES RESEARCH OF NOVEL WATER SOLUBLE THIOXANTHONE PHOTOINITIATORS

QIAN Zhen1, ZHAO Changkuo1, WANG Jindi1, QI Guozhen1, CHEN Jingrong2   

  1. 1. Institute of Fine Chemicals ECUST, Shanghai 200237, P.R. China;
    2. Photochemistry Open Laboratory, Institute of Photographic Chemistry, The Chinese Academy of Sciences, Beijing 100101, P.R. China
  • Received:1998-08-18 Revised:1999-03-12 Online:1999-08-20 Published:1999-08-20

Abstract: The photochemical properties of eight novel water-soluble thioxanthone photoinitiators were studied by UV absorption, fluorescence and ESR. The maximal UV absorption wavelength and extinction coefficient, fluorescence quantum yield and the signal intensity of ESR were determined. The relationship between the structure and the photochemical properties was also discussed.

Key words: thioxanthone, photoinitiator, electron spin resonance