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Volume: 51 | Article ID: art00005
Effects of Molecular Substituents of Copper Phthalocyanine Dyes on Ozone Fading
  DOI :  10.2352/J.ImagingSci.Technol.(2007)51:5(419)  Published OnlineSeptember 2007

Copper phthalocyanine dyes, widely used in various imaging systems, are susceptible to fading under ambient conditions. One of the main factors responsible for such fading is the presence of ozone. Addition of suitable antiozonants has been shown to be effective in improving ozone stability. Although the exact mechanism of such stabilization is not fully understood, the electronic structures of the additives have shown to have significant impact on their effectiveness. In order to increase the ozone stability of copper phthalocyanine dyes without any additives, several copper phthalocyanine dyes containing substituents of varying electronic structures were synthesized and tested for ozone stability. The structure of a copper phthalocyanine dye with significantly improved stability to ozone is described in this paper. Possible mechanisms leading to such stability are also discussed.

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Fariza Hasan, Michael Filosa, Zbigniew Hinz, "Effects of Molecular Substituents of Copper Phthalocyanine Dyes on Ozone Fadingin Journal of Imaging Science and Technology,  2007,  pp 419 - 423,

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