Photo-chemical generation of stable fluorescent derivatives of Rhodamine B
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United States of America Patent
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Feb 22, 2000
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N/A
app pub date -
Dec 12, 1997
filing date -
Dec 20, 1996
priority date (Note) -
Expired
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Abstract
The present invention relates to the field of optical recording materials, in particular, fluorescent compounds and matrices suitable for use in optical memory systems, including three dimensional optical memory systems for READ ONLY MEMORY (ROM). In particular, nonfluorescent Rhodamine B lactams are photochemically transformed into fluorescent Rhodamine B derivatives.
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