| http://www.w3.org/ns/prov#value | - 1 to 8 carbon atoms), an anthryl group, a pyridyl group, a benzofuryl group or a benzothienyl group; Ar represents a bond, an alkylene having 1 to 10 carbon atoms, a vinylene, a phenylene, a biphenylene, a pyridylene, a naphthylene, a thiophene, an anthrylene, a thienylene, a furylene, 2,5-pyrrole-diyl, 4,4???-stilbene-diyl or 4,2???-styrene-diyl; and n is an integer of 0 or 1).Particularly, in t
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