Imaging Science and Photochemistry ›› 1995, Vol. 13 ›› Issue (2): 136-143.DOI: 10.7517/j.issn.1674-0475.1995.02.136

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STUDY ON THE PHOTO OXIDATlON MECHANlSMOF POLYMETHYLENE CHAIN CYANINE DYES

ZENG WAN-XUZ1, CHEN PING1, ZHENG DE-SHUI1, TSUNEKI OKASAKI2, MASAAKI HAYAMI2   

  1. 1. Institute of Photographar Chemistry, The Chinese Academy of Sciences, Beijing 100101, P. R. China;
    2. Nippon Kankon-Shikiso Kenkyusho, Okayama 701, Japan
  • Received:1994-08-29 Revised:1995-01-12 Online:1995-05-20 Published:1995-05-20

Abstract: In this paper, the photcoxidation mechanisms of polymethylene chain cyanine dyes were studied by U-V spectroscopy and Electron Spin Resonance (ESR). It was revealed that singlet oxygen (1O2)、 superoxide were the main factors causing the photofading of dyes ,and dye- would cause the photofading of dyes without oxygen.

Key words: polymethylene chain cyanine dye, photooxidation, singlet oxygen, superoxide