| http://www.w3.org/ns/prov#value | - least one of them includes a styryl group and p is an integer of 1 to 3. wherein Ar15 and Ar16 are independently an arylene group with 6 to 30 carbon atoms; E1 and E2 are independently an aryl or alkyl group with 6 to 30 carbon atoms, a hydrogen atom, or a cyano group; q is an integer of 1 to 3; U and/or V are a substituent including an amino group and the amino group is preferably an arylamino gr
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