METHOD OF QUENCHING ELECTRONIC EXCITATION OF CHROMOPHORE-CONTAINING ORGANIC MOLECULES IN PHOTOACTIVE COMPOSITIONS
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app pub date -
Apr 29, 2009
filing date -
Aug 9, 2007
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Abandoned
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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:;alkoxy straight chin on branched and a, b, c and d are each either 0 or 1, and a, b, c and d add up to 1, 2, 3, or 4.
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