Polymeric photo-chromic composition

Static information storage and retrieval – Radiant energy – Electroluminescent

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305215, 305106, G11C 1304, G11C 700

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active

059368780

ABSTRACT:
The present invention relates to the field of photo-chromic materials, in particular, to photo-chromic compounds and matrices suitable for use in optical memory systems, including three dimensional optical memory systems for computers, multimedia applications and the like. In particular, nonfluorescent spiropyrane is transformed into fluorescent merocyanine by electromagnetic radiation.

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