| http://www.w3.org/ns/prov#value | - The fluorescent compound of claim 1 which is represented by the formula wherein R2 represents a compound selected from the group consisting of H, N(CH3)2, CN and OCH3, or a substituent capable of donating an electron to or accepting an electron from a the aromatic system of the compound(C???C and a phenyl linker); and n is a whole number from 1 to 5. 3.
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