Sensitizer dyes for photoacid generating systems
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United States of America Patent
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Feb 22, 2011
Grant Date -
Feb 12, 2009
app pub date -
Feb 21, 2008
filing date -
Dec 23, 2002
priority date (Note) -
Expired
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Abstract
Photosensitizing dyes are often used in conjunction with a photoacid generator in holographic recording media. Conventional photosensitizing dyes typically are limited by having an appreciable absorption of light when used in a sufficient concentration, such that the intensity of light decreases significantly with penetration into a recording medium. The present invention discloses a number of new 5-alkynyl substituted napthacene photosensitizing dyes that have low extinction coefficients coupled with good sensitizing properties, such that the problems associated with the photosensitizing dyes absorbing light are significantly reduced.
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