| http://www.w3.org/ns/prov#value | - Most preferred examples of useful luminescent agents include aromatic compounds such as anthracene, naphthalene, phenanthrene, pyrene, chrysene and perylene; butadienes such as 1,4-diphenylbutadiene and tetraphenylbutadiene; coumarins; acridine; stilbenes such as transtilbene; and any other luminescent agent having a fused ring structure of less than 8 rings.
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