Method of quenching electronic excitation of chromophore-containing organic molecules in photoactive compositions
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United States of America Patent
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Sep 15, 2009
Grant Date -
Feb 12, 2009
app pub date -
Jan 30, 2008
filing date -
Aug 9, 2007
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Abstract
The photostabilizing electronic excited state energy—particularly singlet state energy from a UV-absorbing molecule has been found to be readily transferred to (accepted by) α-cyanodiphenylacrylate compounds of formulas (I) and (V) having an alkoxy radical preferably in the four (para) position (hereinafter methoxycrylenes) on one or both of the phenyl rings:;
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